Construction kicks off at Gross Reservoir: Denver Water’s critical project to raise the dam by 131 feet gets underway — News On Tap #BoulderCreek #FraserRiver #ColoradoRiver #COriver #aridification

Click the link to read the article on the Denver Water website (Jay Adams):

Construction began April 1 on Denver Water’s five-year project to expand Gross Reservoir by raising the height of the dam.

The reservoir and dam, located in the foothills west of Boulder, were named after former Denver Water Chief Engineer Dwight Gross. The dam was completed in 1954 to store water from the West Slope for Denver’s growing population.

The dam was originally designed to be raised in the future when needed.

Now, Denver Water is raising the height of the dam by 131 feet to help ease a storage imbalance in the utilities’ water collection system. Once completed, Gross will be the tallest dam in Colorado.

The dam was originally designed to be raised in the future when needed.
Now, Denver Water is raising the height of the dam by 131 feet to help ease a storage imbalance in the utilities’ water collection system. Once completed, Gross will be the tallest dam in Colorado.

“We’ve been busy bringing trucks, cranes and other heavy equipment to the site to prepare for construction,” said Doug Raitt, construction manager of the Gross Reservoir Expansion Project for Denver Water. “A lot has to be done just to prepare the site for all the work that has to happen.”

Crews navigate a winding road near the dam to bring a large crane to the construction site. Photo credit: Denver Water.

Early work involves blasting rock on the sides of the canyon to make way for the additional concrete that will be placed over the downstream face and above the existing dam.

A machine drills holes into the rock above the dam to place explosives for blasting operations. Photo credit: Denver Water.

Crews also are building a walkway on the upstream side, or reservoir side, of the dam to provide access for workers to walk from one side of the dam to the other.

Upcoming work includes hydroblasting 2 to 3 inches of concrete from the face of the dam so the new concrete will adhere to it. Part of the dam’s spillway will also be removed to prepare for the addition.

Early work involves installing walkways on the upstream side, or reservoir side, of the dam. The walkways are needed because the top of the dam will be removed to make way for the addition. Photo credit: Denver Water.

To raise the dam, crews will start at the bottom and extend the base of the dam out. Then they will build a series of steps up to the dam’s new height — similar to what you see on the sides of an Egyptian pyramid.

The Gross Reservoir Expansion Project involves raising the height of the existing dam by 131 feet. The dam will be built out and will have “steps” made of roller-compacted concrete to reach the new height. Image credit: Denver Water

“When it’s done, it will be the largest dam in Colorado and nearly triple the storage capacity of the existing reservoir,” said Jeff Martin, manager of the Gross Reservoir Expansion Project for Denver Water. “We’re really excited to begin construction on this important project.”

Doug Raitt, construction project manager for Denver Water, stands next to a 60-ton dump truck at the construction site on April 20, 2022. Photo credit: Denver Water.

Martin said that work conducted during 2022 and 2023 will be mostly site preparation for the on-site concrete production and foundation work on the rock on the sides of the dam and around the bottom.

At the height of construction there may be as many as 400 workers on site at a time, Raitt said.

“Raising a dam is often trickier than simply building a new one,” Raitt said. “We have to continue sending water through the dam during construction while transforming the dam into a new structure.”

Crews remove rock that has been blasted away on the north side of the dam. The area near the red machine at the top of the picture will be the new crest of the dam. Photo credit: Denver Water.

Throughout the project, safety will be the No. 1 priority at the site.

“Denver Water and our construction partners have an emphasis on safety for the public and our workers every day,” Raitt said. “We all go through safety training and will continue to evaluate our operations throughout the project.”

Workers take part in safety training with Kiewit-Barnard, the general contractor for the expansion project in April. At the peak of construction, up to 400 workers will be on-site at the dam during the day. Photo credit: Denver Water.

Protecting the environment and wildlife is another important part of the project. Denver Water worked with biologists to make sure there were no bird nests in the area before the start of construction and will continue to do so throughout the project.

Additional environmental mitigation efforts were put in place to protect South Boulder Creek and the reservoir from sediment and erosion washing in during the work. These efforts will continue throughout the project.

Erosion control measures are put up around construction areas to protect dirt and rocks from falling or washing into South Boulder Creek and Gross Reservoir. Photo credit: Denver Water.

Denver Water also is spending time updating community members around the reservoir.

“It’s important that we let them know what’s happening with the project,” Raitt said.

“For months, we’ve been doing outreach to the community with public meetings, newsletters and emails. We’ve received a lot of feedback from our neighbors letting us know what’s important to them and we’ll continue to work with them and update them throughout the project.”

Denver Water is hosting community meetings with residents who live around Gross Reservoir to update them on the project and answer questions. Photo credit: Denver Water.

First steps on Gross Reservoir expansion: After 20 years of preparation, first signs of construction work emerging in vicinity of dam — News on Tap

Expanding the reservoir requires raising the dam 131 feet by placing new concrete on the existing structure. Image credit: Denver Water.

Click the link to read the article from Denver Water (Todd Hartman):

After nearly two decades of planning and permitting, Denver Water’s work to expand Gross Reservoir northwest of Denver is set to kick off.

Over the coming weeks, residents living near the reservoir may notice early signs of construction activity, including limited tree removal, more heavy equipment on roadways and shifts in recreation access to the reservoir.

“We want residents and visitors to the area to be aware and informed; we are taking the initial steps on the project, including mobilization of equipment, in the weeks to come,” said Jeff Martin, the program manager for the expansion project.

“We want to be transparent about the work underway and we want to share information proactively while continuing to address questions and respond to concerns our neighbors have shared. Most importantly, we want to ensure everyone’s safety on the roadways.”

A consistent place to get up-to-date information on the expansion project will be through the project website http://grossreservoir.org as well as via a Google My Map.

The public also can contact Denver Water through email, a phone hotline and virtual office hours, as well as by signing up for email updates and following the utility’s social media channels. Those contact details also are available on the project website and at http://denverwater.org.

Denver Water also held public outreach sessions in February for residents living in the vicinity of the project. About 80 neighbors attended to learn more about what to expect as construction ramps up.

Raising the existing Gross Dam and expanding the reservoir will improve water reliability for more than 1.5 million people. Image credit: Denver Water.

Here are some key things to expect in the coming weeks and months. In many cases, specific start dates for work are still being developed. Those will be shared at http://grossreservoir.org as details are finalized.

  • Improvements to Gross Dam Road. To protect the safety of all drivers, Denver Water is widening the road in various sections to address tight curves as well as improving the intersection at State Highway 72 and Gross Dam Road. Signage and traffic control will be in place to help drivers safely navigate the affected areas.
  • Improving the intersection of State Highway 72 and Gross Dam Road will improve safety for all drivers. Image credit: Denver Water.
  • Limited tree removal. Some trees will be removed in areas planned for site development on the south side of the dam, at the future quarry location, in areas along Gross Dam Road and other areas where various construction activities are planned.
  • Equipment mobilization. Trucks and other heavy equipment will be spotted more frequently on Highway 72 and nearby roads as contractors position materials for upcoming work on roads and near the base of the dam.
  • Denver Water is committed to ensuring materials are delivered safely to the project site. Image credit: Denver Water.
  • Recreation changes. Access to recreation areas on the south side of the dam, including Windy Point, Osprey Point and Miramonte Picnic Area, will be closed in mid-March. Public boat launch access will be relocated from Osprey Point to the North Shore peninsula. This Google My Map is a good place to check for up-to-date information on recreation and access.
  • Access to the North Shore of the reservoir will also be limited temporarily this spring for construction of a temporary parking lot to help accommodate recreation shifts during the expansion project.

    Recreation access will change during the expansion project, this Google My Map is a good place to check for up-to-date information. Image credit: Denver Water.

    Construction activities will increase as the weather warms.

    By this summer, truck trips in the canyon are expected to increase to nearly 20 trips per day and the workforce will grow to roughly 300 people, though a ridesharing program will help reduce traffic impacts. That intensity will drop off again as the weather cools.

    “We recognize this project will have disruptions to the community near the project and within Coal Creek Canyon,” Martin said. “We are committed to clear, two-way communication with the public and keeping people fully informed as we move forward on this critical project.”

    #Water rates to rise slightly in 2022: Supporting the large, complex system that provides water to 1.5 million people across the #Denver metro area — News on Tap

    From Denver Water (Cathy Proctor and Kim Unger Jay):

    Lea este artículo en español.

    Since its formation more than 100 years ago, Denver Water has always planned ahead when investing in the system that today supplies clean, safe drinking water every day to a quarter of Colorado’s population.

    And with a variety of changes — from regulations to weather patterns — expected in the future, the utility and its 1,000 employees are continuing the work needed to maintain, repair, protect and upgrade its 4,000 square miles of watershed and 3,000 miles of pipe, plus its dams, pump stations and underground storage tanks and more.

    Denver Water delivers safe, clean water to 1.5 million people every day, 25% of Colorado’s population. Photo credit: Denver Water.

    While the global COVID-19 pandemic has added another layer of complexity, Denver Water has worked to keep rate increases for customers as small as possible.

    On Oct. 27, the Denver Board of Water Commissioners adopted new water rates that will effective Jan. 1, 2022, to help pay for critical upgrades and projects to keep this system operating efficiently. How that rate increase will affect individual customer bills will vary depending on where the customer lives in Denver Water’s service area and how much water they use.

    For typical single-family residential customers who receive a bill from Denver Water, if they use 104,000 gallons of water in 2022 as they did in 2021, the new rates will increase their monthly bill by a range of about 47 cents to $1.34 depending on where they live.

    “Denver Water’s mission is to ensure that we deliver safe, clean water to the people who rely on us every day,” said CEO/Manager Jim Lochhead. “Over the next 10 years, we are forecasting an estimated investment of $2.6 billion into our system to increase its resiliency, reliability and sustainability in the face of changes we are anticipating. From more frequent droughts and wildfires to additional regulations we expect we will be asked to meet — we will be prepared.”

    A helicopter collects water from Dillon Reservoir during efforts to contain the Ptarmigan Fire near Silverthorne, Colorado, in late September. Photo credit: John Baker, safety specialist at Denver Water.

    A customer’s monthly bill is comprised of a fixed charge, which helps ensure Denver Water has a more stable revenue stream to continue the necessary water system upgrades to ensure reliable water service, and a volume rate for the amount of water used.

    The fixed monthly charge — which is tied to the size of the meter — is increasing by 74 cents in 2022 for most single-family residential customers to ensure Denver Water is recovering 20% of its needed revenue from fixed charges.

    After the fixed monthly charge, Denver Water’s rate structure has three tiers based on the amount of water used.

    “Even with such large efforts in our future, it’s our goal to have slow and steady rate increases with even, annual adjustments that allow our customers to plan ahead and avoid rate shocks,” said Fletcher Davis, rates manager for Denver Water.

    To keep water affordable, the first tier, which covers essential indoor water use for bathing, cooking and flushing toilets, is charged at the lowest rate.

    The amount of water in this first tier is determined for each customer by averaging their monthly water use as listed on bills dated January through March each year. This is called their average winter consumption.

    Water use above the average winter consumption — typically used for outdoor watering — is charged at a higher price. Efficient outdoor water use is charged in the second tier (middle rate), followed by additional outdoor water use in the third tier (highest rate).

    Meet customers who used Garden In A Box, a Resource Central program supported by Denver Water, to beautify their landscapes with water-wise plants.

    The difference in volume rates for customers who live inside Denver compared to those who live in the suburbs is due to the Denver City Charter, which was changed in 1959 to allow permanent leases of water to suburban water districts based on two conditions: 1) there always would be an adequate supply for the citizens of Denver, and 2) suburban customers pay the full cost of service, plus an additional amount.

    Denver Water encourages customers to be efficient with their water use.

    Using less water means more water can be kept in the mountain reservoirs, rivers and streams that fish live in, and Coloradans enjoy. And using less water also can lower your monthly water bills, saving money.

    “We are continuing our work maintaining and replacing water mains in the street, building a new state-of-the-art treatment plant and water quality laboratory, preparing for the needed expansion of Gross Reservoir and replacing old, customer-owned lead service lines to protect our customers from the risk of lead in drinking water,” Lochhead said.

    “At the same time, we use the tools available to us to help pay for the necessary investment in our system and keep our rates as low as possible.”

    In addition to rates paid by customers, Denver Water relies on bond sales, cash reserves, hydropower sales and the fees paid when new homes and buildings are connected to the system.

    The utility does not make a profit or receive tax dollars. It reinvests money from customer water bills to maintain and upgrade the water system.

    Infographic credit: Kim Unger, Denver Water.

    Denver Water reaches Gross Reservoir settlement, but #water supply concerns remain — The #Denver Post #SouthPlatteRiver #ColoradoRiver #COriver #aridification

    Gross Reservoir. Photo: Brent Gardner-Smith/Aspen Journalism

    From The Denver Post (Conrad Swanson):

    The utility will pay millions to mitigate environmental concerns for Boulder County residents

    The county received assurances Denver Water would pay to mitigate environmental damages expected from the work, but the deal still left Commissioner Matt Jones “heartsick.” He said commissioners fought for the best deal possible but he’s still concerned about the damage the project could do locally and for the millions of people who depend on the Colorado River…

    Climate scientists and legal experts said they’re skeptical the parched Colorado River will provide enough water for Denver Water to fill an expanded Gross Reservoir. And even if the water’s there, the expansion and other projects like it will inevitably worsen water shortages on Colorado’s Western Slope and downstream, they said.

    Utility officials, however, hailed the settlement and said that while they won’t be able to fill the reservoir every year — which they’ve known all along — years with above-average precipitation will provide more than enough water.

    “We’re gonna fill the reservoir,” Denver Water Project Manager Jeff Martin said.

    Climate change is trending in the wrong direction for such strong confidence, cautioned Mark Squillace, the Raphael J. Moses Professor of Natural Resource Law at the University of Colorado Law School.

    “This just seems a bit insane to me that Denver Water is unwilling to acknowledge” that climate change is only likely to worsen water shortages on the Western Slope, Squillace said.

    Martin said he still expects to break ground on the five-year, $464 million project by April…

  • Denver Water will pay $5 million to residents most impacted by the work and agreed to reduce noise and dust from the project using electric rather than diesel generators.
  • Denver Water’s drivers must complete bicycle awareness training, provide “truck free” days for cyclists and “leave Gross Dam Road in a better condition than before the project.”
  • Denver Water will pay $5.1 million to replace open space lands that would be flooded by the reservoir expansion and transfer 70 acres near Walker Ranch Open Space to Boulder County.
  • Denver Water will pay $1.5 million to reduce greenhouse gas emissions from the project and another $1 million to restore a stretch along South St. Vrain Creek.
  • Squillace said while those terms might benefit county residents, it’s still not enough and he was disappointed to hear commissioners agreed to settle.

    “We were between a rock and a hard place,” Jones said. “We were pushed into this corner of knowing that and trying to figure out what we could get for Boulder County residents…

    Martin said he and others at Denver Water expect to be able to fill the expanded reservoir in average and above-average years. South Boulder Creek, which is not part of the Colorado River system, also feeds into the reservoir and could supplement water in dry years on the Western Slope, he noted…

    [David] Bahr suggested Denver Water could instead pipe in water from the Missouri River or other places in the Midwest that are expected to see more water in the coming years. While Martin said those types of ideas could be explored for the more distant future, Denver Water officials maintain that an expanded Gross Reservoir is the best course of action for now.

    The project could still come to a halt, Squillace said. The more delays the work faces, the more climate data will be available, increasing political pressure for Denver Water to seek another way to secure its water supply.

    “I’m still not so convinced that the project’s ever going to actually be built,” he said.

    Brad Udall: Here’s the latest version of my 4-Panel plot thru Water Year (Oct-Sep) of 2021 of the Colorado River big reservoirs, natural flows, precipitation, and temperature. Data (PRISM) goes back or 1906 (or 1935 for reservoirs.) This updates previous work with
    @GreatLakesPeck.

    Gross Reservoir Expansion Project is a go after federal, state and local reviews finalized: Project to raise dam will improve water reliability for more than 1.5 million people while benefiting the environment — News on Tap

    From Denver Water (Jay Adams and Todd Hartman):

    After nearly 20 years of preparations, the expansion of Gross Reservoir in Boulder County is moving ahead.

    Last week, Denver Water took the final step necessary to proceed with the project after striking an agreement with Boulder County to take additional actions to offset impacts of the project.

    The accord with Boulder County means Denver Water can proceed with the long-awaited project that will raise the dam, triple the reservoir capacity and mean far more water security for 1.5 million people in an era of more intense droughts, heavier rain events and earlier snowmelt – all driven by climate change.

    “Today is an historic occasion for Denver Water,” CEO/Manager Jim Lochhead told Denver’s Board of Water Commissioners on Nov. 3, upon acceptance of the Boulder County agreement.

    “We bring to a conclusion the federal, state and local review processes that will allow us to begin construction of the expansion of Gross Reservoir.”

    Expanding the reservoir requires raising the dam 131 feet by placing new concrete on the existing structure. Image credit: Denver Water.

    Denver Water personnel will begin close coordination with Boulder County and others to prepare the area and local roadways for construction. Denver Water will continue to engage and communicate with project neighbors to ease impacts of the work.

    “In the two decades Denver Water has spent preparing for the project, we have been driven by a singular value: the need to do this expansion the right way, by involving the community, by upholding the highest environmental standards and by protecting and managing the water and landscapes that define Colorado,” Lochhead said.

    “Boulder County and its residents share these perspectives, and we look forward to continuing to work with them as the project moves ahead.”

    Building the Gross Reservoir Dam in the 1950s. Photo credit: Denver Water.

    Gross Dam was built in the 1950s and named after Dwight D. Gross, a former chief engineer at Denver Water. It was built to store water from the West Slope that travels through the Moffat Tunnel, as well as water from South Boulder Creek.

    “The original engineers designed the dam so that it could be raised twice, if needed,” said Jeff Martin, Gross Reservoir project manager. “Based on our water supply projections and current system shortfalls, that need is here.”

    Denver Water began the permitting process to raise the dam in 2003 and received approvals from the Colorado Department of Public Health and Environment in 2016 and the U.S. Army Corps of Engineers in 2017.

    The plan cleared its final federal hurdle on July 16, 2020, when the Federal Energy Regulatory Commission gave its approval for the project and ordered Denver Water to proceed with design and construction.

    The project has earned support from major environmental groups, business interests, water users on both sides of the Continental Divide and elected officials on both sides of the aisle, including the state’s last five governors.

    Raising the dam will increase the reservoir’s storage capacity by 77,000 acre-feet of water and make Gross Reservoir the second-largest in Denver Water’s system. When complete, Gross Reservoir will be able to hold 119,000 acre-feet, second only to Dillon Reservoir in Summit County, which is capable of holding just north of 257,000 acre-feet.

    The graphic shows the existing dam and water level and how high the new dam will rise above the current water level. Image credit: Denver Water.

    Expanding Gross Reservoir is a major part of Denver Water’s long-term, multipronged approach to deliver safe, reliable water to more than 1.5 million people today and those who will call the Front Range home in the future. That approach includes increased water efficiency, recycling water and responsibly sourcing new storage.

    The additional reservoir capacity will enable increased water capture in wet years to help avoid shortages during droughts. It will also help offset a current imbalance in Denver Water’s collection system that is a significant risk.

    Denver Water has a water storage imbalance between its two collection systems with 90% of its reservoir storage located in the utility’s South System compared to 10% in its North System. This storage imbalance creates vulnerability if there is a drought, mechanical issue or emergency that affects the South System. The storage imbalance is one of the reasons Denver Water is expanding Gross Reservoir. Image credit: Denver Water.

    “Right now, 90% of our water storage is on the south end of our water collection system, but just 10% of our storage is on the north end,” Martin said.

    “By enlarging Gross Dam, we’ll be able to store more water in the north, which will improve our flexibility in the event there’s a problem on the south side that could come from any number of operational issues or threats, like wildfires.”

    Once filled, the expansion at Gross will provide an additional 72,000 acre-feet of water storage, which is roughly the amount 288,000 residential households would use for one year.

    In addition, 5,000 acre-feet of storage space in the expanded reservoir — known as the environmental pool — is reserved to support environmental needs as part of an agreement with the cities of Boulder and Lafayette. Water from the environmental pool will be used to provide beneficial stream flows along a 17-mile stretch of South Boulder Creek below the dam during dry periods to protect fish and aquatic insects.

    Denver Water also has committed over $20 million to more than 60 environmental mitigation and enhancement projects on both sides of the Continental Divide as a result of the project. According to Colorado officials, those commitments will provide a net environmental benefit for the state’s water quality.

    Denver Water will use its existing water rights to fill the reservoir when it is complete. Engineers expect it will take around five years to fill the newly expanded portion of the reservoir, depending on precipitation and water use from customers.

    “In the end, this project won’t be judged by whether we raised the dam, but rather how we went about expanding the reservoir,” Lochhead said. “We will continue to seek community input and look forward to working with Boulder County as the project moves ahead.”

    “Powerless” against #Denver Water, #Boulder County OKs deal to triple size of Gross Reservoir — The #Colorado Sun

    Gross Reservoir — The Gross Reservoir Expansion Project will raise the height of the existing dam by 131 feet, which will allow the capacity of the reservoir, pictured, to increase by 77,000 acre-feet. The additional water storage will help prevent future shortfalls during droughts and helps offset an imbalance in Denver Water’s collection system. With this project, Denver Water will provide water to current and future customers while providing environmental benefits to Colorado’s rivers and streams. Photo credit: Denver Water

    From The Colorado Sun (Michael Booth):

    Commissioners say they hate the project, but the odds of winning a lawsuit were poor. Denver Water upped the offer to help mitigate impacts of construction to $12.5 million.

    The Boulder County Commissioners on Tuesday unanimously approved a settlement allowing Denver Water to expand the dam and pool at Gross Reservoir, despite vocal opposition from some residents, after a $10 million mitigation deal was sweetened by $2.5 million to soften construction impacts for neighbors.

    Denver Water is likely to vote Wednesday to approve a total of $12.5 million in mitigation and open space donations for Boulder County, after last-minute talks raised the sum.

    The commissioners said they were heartsick at the destruction the dam expansion will cause for neighbors and for revered county open lands. But, they added, county attorneys advised them that federal laws preempt their planning process because the existing dam includes a hydroelectric generator and is therefore controlled by federal laws.

    The attorneys said Boulder County would lose a federal suit filed by Denver Water and that the agency would withdraw its mitigation offer if they delayed a vote.

    Denver Water already has the federal approval it needs to raise the dam on South Boulder Creek by 131 feet, and inundate the surrounding forest for 77,000 more acre-feet of storage, nearly tripling capacity…

    The commissioners wanted Denver Water to go through the county’s existing “1041” land use process, allowed under state law, before construction on the Gross Reservoir expansion begins. But in July, Denver Water sued, saying federal laws superseded Boulder County’s process and that its federal permit required the utility to begin construction by 2022. Boulder County was intentionally slowing down the project, Denver Water argued…

    Denver Water Manager Jim Lochhead said in a statement after the vote, “I appreciate that this was a hard and emotional decision for the Boulder County Commissioners.

    “We have tried for the last year to go through the County’s 1041 land use process, and only after delays were we forced to file litigation to prevent violation of the order by FERC for us to commence construction of the project. Denver Water continues to be committed to do everything in our power to mitigate local impacts of construction,” Lochhead said.

    Construction would impact surrounding forests, trails, roads and neighbors, and also temporarily cut off access to popular open spaces in parts of the area. Commissioner Marta Loachamin said she toured areas around Gross Reservoir for the first time in June, and was struck by markings in the forest showing how many trees will have to be removed and how high the new water pool will rise in the canyon.

    Conservation groups who have sued to stop the dam expansion can continue to negotiate with Denver Water for additional mitigation, deputy county attorney David Hughes told the commissioners. Denver Water has indicated they would continue to talk with the groups, he said…

    The conservation groups are adamant Boulder County could have negotiated for more mitigation. Save the Colorado and PLAN-Boulder County said they had proposed $70 million in mitigation as a settlement, and that Boulder County stopped including them in talks last week.

    Gross Dam enlargement concept graphic via Denver Water

    The agreement with Denver Water now includes:

  • $5 million for the construction impacts on immediate neighbors of the reservoir.
  • $5.1 million to Boulder County open space funding to acquire new land or repair and maintain trails and facilities under extra strain from visitors who can’t use Gross Reservoir spaces.
  • $1.5 million to mitigate greenhouse gas emissions from construction.
  • $1 million for South St. Vrain Creek restoration.
  • A transfer of 70 acres of Denver Water land near Gross Reservoir to Boulder County to expand Walker Ranch Open Space.
  • @DenverWater, @BoulderCounty to consider settlement proposal to end Gross Reservoir lawsuit — The #Denver Post

    Denver Water is planning to expand Gross Reservoir in Boulder County. The additional storage capacity will create more balance in the utility’s storage and give water planners more flexibility in their operational strategy. Photo credit: Denver Water.

    From The Denver Post (Sam Tabachnik):

    Boulder County and Denver Water could be nearing a settlement to resolve a simmering dispute over plans to expand the Gross Reservoir.

    Denver Water in July sued Boulder County in federal court, claiming commissioners were taking too long to consider the utility’s request to expand the reservoir.

    “The proposed settlement would require Denver Water to pay more than $10 million to mitigate the impacts of the project in Boulder County,” Boulder officials said in a Friday news release. “In exchange, Boulder County would not dispute Denver Water’s claim that the project is exempt from review.”

    Boulder County’s Board of Commissioners will meet Tuesday to discuss the proposed settlement, while Denver Water’s board will meet the following day. A federal judge had set oral arguments in the lawsuit for Nov. 4, but those would be canceled if the agency and county government approve the settlement…

    The proposed expansion would raise the existing Gross Dam by 131 feet and widen it by 800 feet, increasing the reservoir’s capacity from nearly 42,000 acre-feet to nearly 120,000 acre-feet.

    But Denver Water can’t just do it on its own — it needs a permit from Boulder County, which will receive none of the water security and all of the construction, traffic and ecosystem effects. Those who live near the reservoir complain that the five years of construction would bring pollution, lights and noise, while environmental advocates say tens of thousands of trees would have to be cut down to complete the project…

    Some of the money ($2.5 million) would be allocated to assist Boulder County residents directly impacted by the project, while $5.1 million would go to open space funding to replace land consumed by the larger reservoir, Boulder officials said. Other funds would address greenhouse gas emissions from the project and restoration efforts of the South Saint Vrain Creek.

    Denver Water would also agree under the proposed settlement to transfer 70 acres of land near Walker Ranch Open Space to Boulder County, which would be added to the recreational land…

    In its lawsuit this summer, Denver Water alleged that Boulder County was overstepping its authority and jeopardizing the water project.

    A federal judge dismissed a separate lawsuit in March from a coalition of environmental organizations, which sued the U.S. Army Corps of Engineers in 2018 to block the project.

    Your water rates may go up next year… but not by very much: In order to fund extra projects, @DenverWater will increase usage rates — Denverwrite

    Denver Water relies on a network of reservoirs to collect and store water. The large collection area provides flexibility for collecting water as some areas receive different amounts of precipitation throughout the year. Image credit: Denver Water.

    From Denverwrite (Rebecca Spiess):

    The Denver Board of Water Commissioners agreed on Wednesday to raise water rates and fixed monthly charges, which will all go into effect Jan. 1, 2022.

    For typical single-family residences using the same amount of water each year, this would shake out to an increase of 47 cents to $1.34 per month, or about $5.64 to $16.08 per year. However, these rates are also dependent on where in the Denver metro a customer lives, since rates are higher in the suburbs due to the rules of the Denver City Charter.

    There are also multiple charging tiers at Denver Water, beginning with the lowest rates for water used for essential things like bathing and cooking, calculated by assessing water consumption during the winter. Other water usage, mainly for outdoor watering in the summer, is charged at higher tiers.

    Denver Water is funding upgrades through these extra charges. These projects include expanding the Gross Reservoir near Boulder to increase storage capacity during wet years and boosting the entire system’s resilience as climate change leads to more unpredictable weather patterns. Other projects include the city’s efforts to replace old lead-containing pipes… as well as the city’s creation of new water quality laboratories and treatment centers.

    A gleaming gift to the great outdoors — News on Tap

    From Denver Water (Todd Hartman):

    Denver Water conveying stunningly scenic parcels to Forest Service as part of Gross Reservoir Expansion Project.

    It’s been getting crowded on the trails, open spaces and forests along the Front Range, especially since COVID-19 sent lock-down weary residents bursting into the backcountry in an eager search for safe, socially distanced outdoor recreation.

    That newfound enthusiasm for backcountry adventure isn’t expected to fade any time soon.

    But now, thanks to an agreement between the U.S. Forest Service and Denver Water, explorers will have just a sliver of additional elbow room.

    Open meadows and mixed forest are common among the parcels Denver Water is conveying to the U.S. Forest Service. Photo credit: Denver Water.

    Denver Water is in the process of conveying 539 acres of wetlands, meadows and forests in Gilpin County to the Forest Service to be managed for public use.

    The remote acreage, near the east portal of the Moffat Tunnel, protects ecologically precious lands near two wildly popular wilderness areas (Indian Peaks and James Peak) and the Arapaho and Roosevelt national forests. The land also complements a larger landscape protection effort in the region assembled by The Conservation Fund.

    “Denver Water is thrilled to be a part of this landscape preservation effort,” said Jim Lochhead, the utility’s CEO/Manager. “This region near these precious wilderness areas is an environmental gem and one much loved by Coloradans, especially many within our service area.

    “Ensuring its permanent protection is an outcome we are proud to be a part of, and we appreciate our partnership with the Forest Service and the Conservation Fund in putting this all together,” he said.

    Denver Water agreed to provide the land for its ecological value and public use as part of a sweeping agreement with the Forest Service to offset environmental impacts associated with the expansion of Gross Reservoir to the east of the area.

    It’s one of several steps Denver Water has already taken to complete so-called “mitigation” projects years ahead of the expansion work.

    Seasonal creeks like this one funnel spring runoff into established waterways and lend the landscape a lush character. Photo credit: Denver Water.

    The lands being conveyed are part of what’s known as the Toll Property, the name derived from a ranching family that owned the land for 120 years.

    Denver Water’s contribution, scattered across 11 parcels, is part of a much larger agreement, according to reporting in the Boulder Daily Camera. A much larger area of 3,334 acres remains in the Toll family’s private ownership, but with a perpetual conservation easement to prevent development.

    An additional 823 acres also were acquired by the Forest Service.

    The entire land protection project creates a significant buffer, separating the adjacent James Peak Wilderness to the west from rural development and urban areas to the east, as described in a summary by The Conservation Fund.

    These parcels in the Mammoth Gulch area look southwest toward the Continental Divide. Photo credit: Denver Water.

    It also helps protect a four-mile stretch of the upper portion of South Boulder Creek, a key part of Denver Water’s supply.

    The landscape is familiar not only to backpackers. Train aficionados know the area as part of the route taken by Amtrak’s California Zephyr, between Denver and San Francisco.

    #Boulder County places Gross Reservoir Expansion proposal on hold

    Gross Dam enlargement concept graphic via Denver Water

    Here’s the release from Boulder County:

    Public hearings set for August and September are canceled

    Last September (2020), Denver Water submitted an Areas and Activities of State Interest (1041) application to Boulder County Community Planning & Permitting (CPP) for its Gross Reservoir Expansion project.

    Since that time, CPP requested additional information from Denver Water. On June 29, 2021, the CPP Director acknowledged Denver Water’s intent to not provide additional requested information, and determined the 1041 review will move to public hearings.

    Denver Water filed a lawsuit against the county in July 2021. The lawsuit alleges that the county does not have the authority to regulate the project because the project requires a permit from the Federal Energy Regulatory Commission. Because of the lawsuit, on July 26, Denver Water’s attorney requested that the CPP Director place the 1041 application on hold, and CPP Director Dale Case granted the request the next day, July 27.

    Consequently, public hearings that were set for August and September have been canceled.

    “It makes sense to have the court resolve the legal issues about whether Boulder County can proceed before conducting hearings on the 1041 review,” said Case. “We have already devoted significant time and resources to processing Denver Water’s application, and it would take even more county resources to proceed with public hearings.”

    The Areas and Activities of State Interest (1041) application for the expansion of Gross Reservoir is a request to store an additional 77,000 acre-feet total of water, which includes increasing the dam height by approximately 131 feet, the dam length by approximately 790 feet, and the spillway elevation by approximately 126 feet; quarry operations to obtain aggregate needed for construction; construction of a temporary concrete batch/production plant and an aggregate processing plant; permanent road improvements to Gross Dam Road from State Highway 72 to Gross Reservoir; temporary road improvements to FS359 (Winiger Ridge Road) and FS97 (Lazy Z Road); and the relocation of the Miramonte Multi-Use Trail.

    View the application materials on the Docket SI-20-0003: Gross Reservoir & Dam Expansion webpage.

    With critical #water supply project facing unacceptable risk, #Denver Water seeks relief from Boulder County process in federal court

    Denver Water is planning to expand Gross Reservoir in Boulder County. The additional storage capacity will create more balance in the utility’s storage and give water planners more flexibility in their operational strategy. Photo credit: Denver Water.

    Here’s the release from Denver Water:

    Denver Water today [July 14, 2021] filed a lawsuit in U.S. District Court against Boulder County, asserting the county is overreaching its authority and jeopardizing a federally ordered reservoir expansion critical to a safe and secure water supply for one quarter of the state’s population while risking long-planned benefits for the West Slope environment.

    BACKGROUND

    For nearly two decades, Denver Water has conducted an exhaustive and comprehensive planning and permitting process at the direction and oversight of six federal and state regulatory agencies. That process culminated last year in a final order to commence expansion of Gross Reservoir from the Federal Energy Regulatory Commission, which has final authority over the expansion project because Gross Reservoir occupies federal lands specifically designated for hydropower production.

    For years, Denver Water has also attempted good faith efforts to work with Boulder County to secure county permits, including through two attempts at an intergovernmental agreement, robust engagement with county staff and neighbors, and participation in a local land-use review known as the “1041 process.” Unfortunately, Boulder County has been unreceptive and is using the 1041 process to frustrate the project, extending and delaying its review to the point that it is now placing the entire project at risk.

    DENVER WATER STATEMENT ON NEED FOR THE PROJECT

    It is hard to overstate the importance of the expansion of Gross Reservoir to the future of the Denver region. It will offer crucial protection to the utility’s water supplies from the urgent threat of catastrophic wildfire and prolonged drought — the same forces that nearly 20 years ago combined to threaten Denver Water’s ability to ensure drinking water to its customers.

    This risk to clean water supplies is even higher today, in an era of rapid climate change and increasing periods of extreme weather. Last year’s record wildfire fire season, which generated the three largest forest fires in Colorado history, only just missed triggering major impacts to Denver Water’s supplies. Water providers to the north haven’t been as lucky, unable to treat some supplies running black and brown with ash produced by the Cameron Peak fire. Denver Water must act now to mitigate these risks.

    The Gross Reservoir expansion conforms in every way to benchmarks in Colorado’s Water Plan, a plan developed through statewide and bottom-up guidance from eight major river basins over two years and published in 2015. That plan calls for increasing the capacity of existing reservoirs as a key element in creating 400,000 acre-feet of additional storage in the state by 2050.

    The State of Colorado, in comments to the U.S. Army Corps of Engineers, expressed its support for the Gross Reservoir expansion and has identified it specifically as fitting within the kind of project defined as necessary in Colorado’s Water Plan: “A significant portion of Colorado’s future needs will be met with the implementation of projects and planning processes that the local water providers are currently pursuing, including the Moffat Collection System Project” (aka Gross Reservoir expansion).

    The reservoir expansion also addresses the significant need for additional supplies in the metro region, as referenced in the Water Plan’s 2019 technical update. That update projected metro Denver demand will increase by 134,000 acre-feet to 280,000 acre-feet by 2050 against a 2015 baseline and the area likely will experience a supply shortfall, even accounting for the Gross Reservoir expansion and other water projects, a drop in per-capita use, and further conservation and reuse.

    DENVER WATER STATEMENT ON DEVELOPMENT OF THE PROJECT

    Denver Water’s diligent and earnest work to build partnerships across the Continental Divide, conduct significant and ongoing environmental mitigation for the project and work closely with regulators since the early 2000s has earned the project the support of major environmental groups, Grand County and each of the last five governors of Colorado. The Colorado Department of Public Health and Environment concluded the project would result in net water quality improvement on both sides of the Continental Divide.

    The dam, when built in the 1950s, was designed to be raised. In the 1980s, amid discussion of the Two Forks project southwest of Denver (later vetoed by the EPA) a coalition of environmental groups recommended the expansion of Gross Reservoir as a viable, environmentally stable project. “We feel that additional capacity at Gross Reservoir is an environmentally acceptable and cost-effective way of increasing the overall yield of the system,” the coalition wrote. It included representatives of the Sierra Club, the Environmental Defense Fund and Trout Unlimited, among several other groups.

    Denver Water also worked industriously with local governments and citizen groups on the West Slope to address the impacts that putting more water in an expanded Gross Reservoir would have on streams in Grand County. Those talks, often intense, and spanning half a decade, resulted in the Colorado River Cooperative Agreement in 2013, an unprecedented cooperative effort involving 18 signatories and 40 partner organizations that began a new era of collaboration and conflict-resolution between Denver Water and the West Slope.

    Expanding Gross Reservoir locks in a key component to that agreement: Denver Water would place a geographic limit on its service area, putting to rest fears the utility would continue to expand its reach to an ever-sprawling suburban ring. The utility also agreed to several measures that would provide more water to West Slope rivers, towns and ski areas and invest in improvements to aquatic habitat. The landmark concord also affirmed that with the Gross Reservoir expansion, Denver Water would benefit from more flexibility in its system, and it would use that flexibility to address stream flow and stream temperature concerns more nimbly and readily in Grand County.

    Additionally, Denver Water worked with the cities of Boulder and Lafayette to establish an environmental pool in Gross Reservoir to provide additional water in South Boulder Creek during low-flow periods. Water in that pool would also supplement supplies for those two cities. Many of these commitments, however, depend on the project going forward and are therefore in jeopardy through Boulder County’s actions.

    As planning for the expansion moved ahead, the utility undertook a proactive strategy to reduce demand. It deployed a water recycling facility to reduce its dependence on West Slope water supplies, embarked on a conservation program renown nationally for its success — cutting per capita water use by 22% between 2007 and 2016 — and has now undertaken direct efforts at water efficiency that pinpoint savings opportunities at the individual customer level. These are only a sample: The utility remains committed to innovation to drive further savings and expand water reuse as a core part of its strategy, work that will continue to be essential even with an increase in storage at Gross Reservoir.

    In short, the effort to build civic and regulatory support for the Gross Reservoir expansion has been persistent, inspired and earnest. The future of the region, its access to clean, safe drinking water, protection of its urban tree canopy and environment, and its economic development rest in large part on the ability of Denver Water to protect water supplies from emerging threats, develop a climate-resilient system and remain prepared for the demands that will result from continued growth within its service area in metro Denver.

    DENVER WATER STATEMENT ON BOULDER COUNTY’S PROCESS

    Boulder County is endangering the project through delays, repeated and expanding requests for information — information demands that duplicate the already completed federal permitting process in which Boulder County participated — the potential for months of additional hearings and the fact that two of the county’s three commissioners have already publicly stated their opposition to, and desire to stop, the expansion project.

    Further, the county’s land use director informed Denver Water on June 29 that the utility — despite over nine months of diligent and painstaking work to respond to Boulder County’s ever-expanding queries — failed to provide sufficient information to county agencies about the project, setting the project up for failure and rendering further involvement with the 1041 process futile.

    These actions also put engineering and construction deadlines at risk, threaten to disrupt FERC-ordered timelines and risk other permits and actions necessary for successful completion of the project. A project of this size and complexity requires extensive preplanning, substantial resources and a highly skilled design and construction team. Delays resulting from Boulder County’s refusal to timely process the 1041 application add substantial costs and cause permitting, procurement and logistical issues that seriously disrupt Denver Water’s ability to execute the project.

    In summary, the actions of a single local jurisdiction, Boulder County, threaten to derail and undermine a federally permitted and state supported project vital to a safe and secure water supply for one-quarter of Colorado’s population. This presents an unacceptable risk to a critical project spanning nearly 20 years and involving intensive review by environmental agencies at the federal and state levels and the engagement of dozens of organizations and communities across the metro area and the West Slope.

    For that reason, Denver Water must seek relief in federal court. The complaint further details Denver Water’s attempts to work with Boulder County, the reasons that federal law preempts Boulder County’s claimed authority over the FERC-licensed expansion project, and the basis for Denver Water’s request that the court prevent Boulder County from further delaying and derailing the project.

    Why the Southwest’s shrinking water reservoirs matter to #Colorado — The #Denver Post #COriver #ColoradoRiver #aridfication #COleg #COWaterPlan

    Lake Powell is seen in a November 2019 aerial photo from the nonprofit EcoFlight. Keeping enough water in the reservoir to support downstream users in Arizona, Nevada and California is complicated by climate change, as well as projections that the upper basin states of Colorado, Utah, Wyoming and New Mexico will use as much as 40% more water than current demand. A recent white paper from a lineup of river experts calls those use projections into question.
    CREDIT: ECOFLIGHT via Aspen Journalism

    From The Denver Post (Bruce Finley):

    Polis signs latest $20 million infusion for Colorado Water Plan as hotter, drier climate grips Southwest

    Colorado Gov. Jared Polis has signed off on increased funding for water development projects that state officials regard as critical to meet growing demands. But the state’s plans to secure more water from rivers here are colliding with the hotter, drier climate that’s hammering the Southwest, where Colorado River reservoirs are at record-low levels.

    Federal authorities warn hydropower electricity for millions of people (and their air conditioners) could be jeopardized if water levels in Lake Powell and Lake Mead — now both about 34% full — fall much lower. That’s partly why water officials from seven states met in Denver this week to size up perils before their next round of negotiations over how states deal with diminishing water.

    Colorado, New Mexico, Utah and Wyoming (the Upper Basin states along the Colorado River) are facing pressure from Lower Basin states (Arizona, Nevada, California) to use less water — even though the 1922 Colorado River Compact legally entitles them to use more — to try to save the downriver reservoirs.

    “There’s a reality that we do have a shrinking water supply and we’re all going to have to figure out new ways to reduce our use. We try to stay out of any state’s business, but we also realize there’s not enough water for the Upper Basin to use its full allotted water under the compact,” said Bill Hasencamp, the Colorado River resources manager for the Metropolitan Water District of Southern California, which serves 19 million people in the Los Angeles area and San Diego…

    Colorado leaders over the past six years have awarded more than $500 million in grants and loans for 323 projects in carrying out the state’s water plan — which calls for $100 million a year through 2050. Polis last week signed the latest monetary infusion into law: HB21-1260 for $20 million more to the Colorado Water Conservation Board to go toward increased water storage capacity and supply. The bill provides $15 million for loans and grants and $5 million for the regional “roundtable” panels that have planned 500 local water development projects.

    Polis also signed off on SB21-189 to spend $1.2 million more in construction funds for the implementation of the overall $20 billion water plan, which was launched in 2015 to ensure enough for a productive economy — from cities to farms to the recreation industry — while preserving healthy rivers through efficient water use and carefully designed water projects. Two in progress would siphon significantly more water out of the Colorado River basin — an expanded reservoir for Denver and enlarged Moffat system that diverts west-flowing water to the northern Front Range…

    “We are already actively talking about and experiencing cuts, which have been particularly painful in this very dry year,” [Rebecca Mitchell] said, referring to the state’s allocation system that forces junior water-rights holders to use less in dry times. “These are historically low conditions and we need basin-wide solutions that we work on together.”

    State officials in Colorado, Utah and Wyoming contend they’re entitled under the 1922 compact to use as much as 2 million acre-feet more water. But those shares are based on century-old calculations for how much water the river can provide — 15 million acre-feet a year — rather than the 12.3 million acre-feet average total flow since 2000.

    Contingency plans for enduring severe droughts are expected to force mandatory cutbacks next year in Arizona, Nevada and Mexico.

    Hot, dry conditions stressing Grand County waterways — News on Tap

    From Denver Water (Jay Adams):

    Denver Water cuts back on some of its West Slope supplies to help struggling streams.

    The Colorado River is hurting.

    The struggles of the river’s largest reservoirs, Lake Mead and Lake Powell, have been well documented over the last decade as drought has ravished the West.

    The story, however, starts more than 500 miles upstream in Grand County, Colorado.

    The county is filled with streams that make up the beginning of the mighty Colorado’s journey in the mountains north of Grand Lake. Around 60% of the water in Grand County is diverted from these streams and used for agricultural and municipal water supply, mostly on the Front Range.

    That includes the Denver metro area, which receives about 20% of its water from Grand County, where Denver Water has water rights dating back to the 1920s. Most of the water is captured in rivers and streams around Winter Park when mountain snow melts in the spring.

    Rivers and creeks in Grand County are part of Denver Water’s North Collection System. Water flows through the Moffat Tunnel, under the Continental Divide, to Gross and Ralston reservoirs. Image credit: Denver Water.

    But, after a lackluster runoff season on the West Slope combined with dry soils from the past year, the hot, dry conditions in early June meant the high-country rivers and streams needed help.

    Denver Water responded by voluntarily reducing diversions from several Grand County creeks and coordinating with the Colorado River District, Grand County, Northern Water and other Learning By Doing partners to adjust operations, where possible, to help boost water levels in some of the more troubled areas.

    “While our primary responsibility is to make sure we’re supplying water to 1.5 million people in the metro area, we’re always looking for opportunities to help improve conditions on the rivers, to help the aquatic environment, recreation and communities they flow through,” said Nathan Elder, Denver Water’s manager of water supply.

    By reducing diversions, Denver Water foregoes collecting a portion of water it is legally entitled to collect for its water supply in exchange for improving streams and tributaries along the Colorado River.

    The Fraser River flows below a Denver Water diversion structure in Grand County in June 2021. Denver Water voluntarily released around 11,000 acre-feet of water from streams in the county from June 6 through early July in 2021 to improve aquatic habitat downstream. Photo credit: Denver Water.

    It started with a plea for help

    On June 5, the Colorado River District asked Denver Water for help after reporting extremely low water levels and critically high water temperatures on the Colorado River. The river district reported conditions were creating unhealthy habitat for fish and aquatic insects.

    “When the email came in Saturday morning, we were in a position to quickly respond and reduce the amount of water we were pulling from several Grand County creeks,” Elder said.

    Denver Water has continued making operational adjustments since that email.

    The utility estimates that by early July it will have voluntarily foregone collecting around 11,000 acre-feet of water from Grand County to help keep more water in the Colorado and Fraser rivers. That’s roughly enough water to supply over 44,000 residences for one year.

    “It has been helpful to hear directly from stakeholders in Grand County, including Trout Unlimited and ranchers along the river, on where we may be able to truly help the river, the community and the environment with our operational adjustments,” Elder said.

    “With help from the West Slope, we’ve been able to target specific areas and send some beneficial water downstream.”

    This includes adjusting water releases from Williams Fork Dam twice a day in a way that also benefits the Colorado River.

    For example, when releasing water from the dam, Elder and his team try to time the flows, so the water reaches the river in Kremmling — an area prone to higher river temperatures — during hotter times of the day.

    The higher water level helps to cool down the water, which is better for the aquatic environment.

    Warm temperatures and low water levels create unhealthy conditions for fish in Colorado streams. Denver Water worked with the Colorado River District to send cooler water downstream in June to help lower temperatures on the Colorado River near Kremmling. Photo credit: Denver Water.

    Position to help

    The wet spring conditions along the Front Range boosted water supplies in Denver Water’s South Platte River collection system, which drastically reduced customers’ demand for water across the metro area — where Denver Water serves a quarter of the state’s population.

    In fact, from January to May, Denver Water’s customer water use hit a 50-year low across the metro area, despite nearly 600,000 more people in its service area since 1970. That includes years in which the metro area was on mandatory drought restrictions.

    “Some of the low use may be due to COVID-19 impacts on business and obviously a wet, cool spring helped,” said Greg Fisher, demand manager for Denver Water.

    “It’s a great sign that our customers really understand efficient water use and let Mother Nature do the watering for them when possible.”

    This wet spring on the Front Range also helped provide additional flexibility on how Denver Water collected and distributed water across its collection system during the spring snow runoff.

    “We were able to turn off the Roberts Tunnel in April, which helped bring water levels up in Dillon Reservoir for boating,” Elder said.

    “The conditions also enabled us to send more water down the Blue River below Dillon Dam to help improve fish habitat around Silverthorne instead of sending the water to the Front Range.”

    Denver Water uses the Roberts Tunnel to bring water from Dillon — the utility’s largest reservoir — under the Continental Divide to the Front Range.

    But flexibility like this is not always possible, especially with the myriad threats Denver’s water system is facing.

    “Between the rising temperatures, changes to the timing of spring runoff, extreme fire behavior and half a million more people expected in the metro area by 2040, our ability for flexible operations is decreasing in a time when we need it the most,” said Elder.

    “We must take an ‘all-in’ approach that includes conservation, water reuse and development of new water supplies so we can continue to maximize the benefits of a large system.”

    Wet conditions in the metro area during the spring of 2021 reduced demand for water for irrigation. The lower demand gave Denver Water more flexibility to fill its reservoirs and provide additional water for environmental benefits on the West Slope. Photo credit: Denver Water.

    More flexibility

    According to Elder, hot, dry weather conditions highlight the benefits of having a large water collection system, as it provides the water planning team more flexibility in its operational playbook.

    Denver Water relies on a network of reservoirs to collect and store water. The large collection area provides flexibility for collecting water as some areas receive different amounts of precipitation throughout the year. Image credit: Denver Water.

    The vision for the Gross Reservoir Expansion Project, which is in its final steps of permitting, is an example of how additional water storage can really help streams in times of drought.

    “As part of the Gross Reservoir Expansion, some of the voluntary things we’re doing this year — like leaving more water in the Grand County rivers — will become required annual operations for us,” said Elder.

    Denver Water is planning to expand Gross Reservoir in Boulder County. The additional storage capacity will create more balance in the utility’s storage and give water planners more flexibility in their operational strategy. Photo credit: Denver Water.

    That’s because Denver Water is one of 18 partners who signed the Colorado River Cooperative Agreement in 2013, ushering in a new era of cooperation between the utility and West Slope stakeholders, all with the vested interest in protecting watersheds in the Colorado River Basin.

    As part of that agreement, a process called “Learning by Doing” was created, which has helped the utility stay better connected on river conditions in Grand County. The partnership is a collection of East and West Slope water stakeholders who help identify and find solutions to water issues in Grand County.

    “Denver Water has been part of Grand County for over 100 years, and we understand the impact our diversions have on the rivers and streams,” said Rachel Badger, environmental planning manager at Denver Water.

    “Our goal is to manage our water resources as efficiently as possible and be good stewards of the water — and Learning By Doing helps us do that.”

    That’s because Denver Water is one of 18 partners who signed the Colorado River Cooperative Agreement in 2013, ushering in a new era of cooperation between the utility and West Slope stakeholders, all with the vested interest in protecting watersheds in the Colorado River Basin.
    As part of that agreement, a process called “Learning by Doing” was created, which has helped the utility stay better connected on river conditions in Grand County. The partnership is a collection of East and West Slope water stakeholders who help identify and find solutions to water issues in Grand County.
    “Denver Water has been part of Grand County for over 100 years, and we understand the impact our diversions have on the rivers and streams,” said Rachel Badger, environmental planning manager at Denver Water.
    “Our goal is to manage our water resources as efficiently as possible and be good stewards of the water — and Learning By Doing helps us do that.”

    Appeal filed to sustain #ColoradoRiver flows and stop Gross Dam expansion — Wild Earth Guardians

    Gross Reservoir — The Gross Reservoir Expansion Project will raise the height of the existing dam by 131 feet, which will allow the capacity of the reservoir, pictured, to increase by 77,000 acre-feet. The additional water storage will help prevent future shortfalls during droughts and helps offset an imbalance in Denver Water’s collection system. With this project, Denver Water will provide water to current and future customers while providing environmental benefits to Colorado’s rivers and streams. Photo credit: Denver Water

    Here’s the release from Wild Earth Guardians (Jen Pelz):

    Coalition stays the course in fight to halt construction of tallest dam in Colorado history

    A coalition of conservation groups filed a notice of appeal today in the Tenth Circuit Court of Appeals seeking to halt Denver Water’s proposed expansion of Gross Dam in Boulder County and to protect sustainable flows in the Colorado River. The appeal challenges the dismissal by the lower court and asks the appeals court to order review of the merits of the case to ensure the health of the Colorado River, its native and imperiled species, and communities across Colorado that will be negatively impacted by the project…

    The conservation coalition, including Save The Colorado, The Environmental Group, WildEarth Guardians, Living Rivers, Waterkeeper Alliance, and the Sierra Club, originally filed suit on December 19, 2018, in the federal district court of Colorado. The groups’ litigation sought to halt Denver Water’s expansion of Gross Reservoir in Boulder County and prevent an additional diversion of water from the Colorado River through its Moffat Collection System due to violations of federal environmental laws including the Clean Water Act, Endangered Species Act, and the National Environmental Policy Act. The project would triple the storage capacity of Gross Reservoir and the dam would become the tallest dam in the history of Colorado.

    On March 31, 2021, the district court dismissed the coalition’s case finding that it was not before the proper court because the Federal Power Act provides the federal court of appeals with sole authority over hydropower licensing by the Federal Regulatory Commission.

    “Given the climate, water and biodiversity crises upon us, we need to be restoring river ecosystems, not destroying them,” said Jen Pelz, Wild Rivers Program Director at WildEarth Guardians. “This battle against the powerful water institution is not over and we will continue to fight for water and climate justice by working to reform this broken system of laws and policies.”

    “The Sierra Club opposes the Gross Reservoir expansion because of the massive environmental damage it would cause,” said Rebecca Dickson, Chair of the Sierra Club-Indian Peaks Group. “If this project proceeds, hundreds of thousands of trees will be chopped down, countless habitats destroyed, and yet another waterway will be diverted from its natural course to the Front Range. On top of this, immeasurable amounts of greenhouse gasses will be released into the atmosphere during the construction and transportation process.”

    “Denver Water’s plan to build the tallest dam in Colorado history will hurt the 40 million people in seven states and two countries who depend on the Colorado River for their water supply,” said Daniel E. Estrin, general counsel and advocacy director at Waterkeeper Alliance. “The basin is slowly dying a proverbial ‘death by a thousand cuts’ as its communities and ecosystems face a water crisis driven by unsustainable demand, prolonged drought, and runaway climate change. We stand with our fellow conservation groups in continuing to oppose this misguided and reckless water grab.”

    “The expansion of Gross Dam is a shortsighted response to a long-term problem,” said Beverly Kurtz the President of The Environmental Group. “Denver Water should lead the way in finding sustainable solutions to the challenge of water scarcity, rather than destroying pristine areas of western Boulder County and further threatening the Colorado River with an antiquated dam proposal. Recent data confirm that predicted shortages of water in the Colorado River Basin due to climate change are happening even sooner than expected. Building a bigger dam does not increase the amount of water available. The District Court needs to hear the merits of our case rather than establishing a dangerous precedent by deferring authority to FERC and the federal court of appeals.”

    “The year of decision, to not divert more water from the Colorado River, came and went about twenty years ago,” said John Weisheit, conservation director of Living Rivers in Moab, Utah. “We know this is true because the development of contingency planning agreements to avoid water shortages began in 2014 and the urgency to resolve this threat still remains. Yet the contradictions and absurdities to also develop a suite of diversion projects in the Colorado River Basin also remains. If the basin’s water managers will not even adapt to the hydrology they accept, how could they possibly adapt to the hydrology of the future? Our lawsuit is an appeal to accept the truth that the Colorado River has nothing left to give.”

    The groups’ appeal is posted here: http://pdf.wildearthguardians.org/support_docs/Notice-of-Appeal.pdf

    The organizations participating in this litigation are represented by the public interest environmental law firm Eubanks & Associates, PLLC.

    Judge tosses challenge from environmental groups to halt #DenverWater reservoir expansion — Colorado Politics

    Gross Reservoir — The Gross Reservoir Expansion Project will raise the height of the existing dam by 131 feet, which will allow the capacity of the reservoir, pictured, to increase by 77,000 acre-feet. The additional water storage will help prevent future shortfalls during droughts and helps offset an imbalance in Denver Water’s collection system. With this project, Denver Water will provide water to current and future customers while providing environmental benefits to Colorado’s rivers and streams. Photo credit: Denver Water

    From Colorado Politics (Michael Karlik):

    A federal judge has thrown out a legal action from multiple environmental organizations seeking to halt the expansion of a key Denver Water storage facility, citing no legal authority to address the challenge.

    “This decision is an important step,” said Todd Hartman, a spokesperson for Denver Water. “We will continue working earnestly through Boulder’s land-use process and look forward to beginning work on a project critical to water security for 1½ million people and to our many partners on the West Slope and Front Range.”

    The expansion of Gross Reservoir in Boulder County is intended to provide additional water storage and safeguard against future shortfalls during droughts. The utility currently serves customers in Denver, Jefferson, Arapahoe, Douglas and Adams counties. In July 2020, the Federal Energy Regulatory Commission gave its approval for the design and construction of the reservoir’s expansion. The project would add 77,000 acre-feet of water storage and 131 feet to the dam’s height for the utility’s “North System” of water delivery.

    FERC’s approval was necessary because Denver Water has a hydropower license through the agency, and it provided the utility with a two-year window to start construction.

    A coalition of environmental groups filed a petition in U.S. District Court for Colorado against the U.S. Army Corps of Engineers and the U.S. Fish and Wildlife Service, seeking to rescind those agencies’ previous authorizations for the project. They argued the agencies inadequately considered the environmental impact of expansion…

    …Denver Water pointed out that under federal law, appellate courts, not district-level trial courts, are responsible for hearing challenges to FERC approvals. By challenging the environmental review process that led to the project’s go-ahead, the government argued, the environmental organizations raised issues “inescapably intertwined with FERC’s licensing process.”

    On Wednesday, U.S. District Court Judge Christine M. Arguello agreed that the groups’ challenge was indeed wrapped up in the FERC approval.

    “[W]here a party does not challenge a FERC order itself, but challenges another agency order that is inextricably linked to the FERC order, the FPA’s exclusive-jurisdiction provision applies and precludes this Court from exercising jurisdiction,” she wrote in dismissing the case.

    The Daily Camera reports that Boulder County’s approval is the final step for the expansion project.

    Public comment open for Gross Reservoir expansion project — The #Colorado Daily #ColoradoRiver #COriver #arifidification

    From The Colorado Daily (Deborah Swearingen):

    Community members can now share comments about Denver Water’s Gross Reservoir expansion project proposal, which is being reviewed by Boulder County.

    Although a postcard sent to property owners near Gross Reservoir said public comment about the proposed expansion project should be in by Oct. 14, county staff clarified that community members can comment at any point until the Boulder County Board of Commissioners makes a final decision.

    The current Oct. 14 deadline is for referral agencies and even that may be pushed if enough agencies request an extension. If an extension is granted, a new postcard will be sent to property owners, according to Boulder County.

    While Boulder County spokesman Richard Hackett said it’s helpful to have community comments in early, he stressed there is no official deadline or cutoff. Some adjacent property owners, such as Timberline Fire Protection District, also are referral agencies on the project, which Hackett said is part of the explanation for the postcard’s wording.

    No public meetings or hearings have been scheduled yet, but the county will announce them to its Gross Reservoir Expansion Project news list. People who want to receive emailed or text messaged notifications can sign up at here.

    Meanwhile, community members can submit questions or written comments to grossreservoir@bouldercounty.org.

    Gross Reservoir — The Gross Reservoir Expansion Project will raise the height of the existing dam by 131 feet, which will allow the capacity of the reservoir, pictured, to increase by 77,000 acre-feet. The additional water storage will help prevent future shortfalls during droughts and helps offset an imbalance in Denver Water’s collection system. With this project, Denver Water will provide water to current and future customers while providing environmental benefits to Colorado’s rivers and streams. Photo credit: Denver Water

    #Boulder County’s review of proposed Gross Reservoir Expansion Project underway — The #Colorado Daily #ColoradoRiver #COriver #aridification

    Gross Reservoir — The Gross Reservoir Expansion Project will raise the height of the existing dam by 131 feet, which will allow the capacity of the reservoir, pictured, to increase by 77,000 acre-feet. The additional water storage will help prevent future shortfalls during droughts and helps offset an imbalance in Denver Water’s collection system. With this project, Denver Water will provide water to current and future customers while providing environmental benefits to Colorado’s rivers and streams. Photo credit: Denver Water

    From The Colorado Daily (Deborah Swearingen):

    The Boulder County Community Planning and Permitting Department’s review of a planned expansion of Gross Reservoir in western Boulder County is underway, officials announced Thursday.

    This is the latest in a years-long dispute between Boulder County and Denver Water, who owns and operates the reservoir and dam. A Boulder District Court judge in December 2019 affirmed the county’s right to require that Denver Water go through its 1041 land use review process in order to expand the reservoir…

    “Denver Water put in a request to determine if the expansion project would be exempt from our land use code,” Boulder County spokesperson Richard Hackett said.

    However, the water utility company in July dismissed that appeal soon after the Federal Energy Regulatory Commission granted approval for Denver Water to continue with design and construction after the county told the company it would not conduct the review while the litigation was ongoing. The regulatory commission’s approval stipulates that project construction begin within two years. The project in 2017 received the other permit it needed from the U.S. Army Corps of Engineers…

    No public meetings or hearings have been scheduled yet, but the county will announce them to its Gross Reservoir Expansion Project news list. People who want to receive emailed or text messaged notifications can sign up at here. Hackett said the agencies reviewing the application have until Oct. 14 to return initial comments, although the county has the right to extend that deadline due to extenuating circumstances caused by the coronavirus.

    In the meantime, community members can submit questions or written comments to grossreservoir@bouldercounty.org. There is no deadline for doing so. Comments will be accepted until the Boulder County Board of Commissioners makes a decision.

    Denver Water’s collection system via the USACE EIS

    Some Environmental Groups In #Colorado Still Hope To Stop The Gross Reservoir Expansion Project — Colorado Public Radio

    From Colorado Public Radio (Corey H. Jones):

    The fight over expanding Gross Reservoir in Boulder County continues, despite the project’s recent approval from federal officials

    “We are committed to working closely with the Boulder County community to ensure safety, be considerate neighbors and retain open, two-way communication channels during this construction project,” Jeff Martin, program manager for the Gross Reservoir Expansion Project, said in a recent statement

    At the same time, Denver Water has its own case with Boulder County, which initially denied the utility’s request to be exempt from a local review of its plan. A Boulder district judge ruled in December that Denver Water must go through the county’s review process. Denver Water has appealed that decision through the Colorado Court of Appeals and must file an opening brief by Aug. 4.

    This means that ultimately county officials could have a say over approval of the expansion. Boulder County Deputy Attorney David Hughes said they have that power thanks to a series of Colorado statutes referred to as 1041 Regulations.

    Boulder County could also request another hearing from the Federal Energy Regulatory Commission. But Hughes declined to say whether his office will do so.

    After receiving that federal approval, Denver Water said it plans to finish the design phase of the expansion next year, followed by four years of construction.

    “The FERC order is an important advance for the project,” a Denver Water spokesman said in an email to CPR News. “From here, related to legal matters, we’ll need to take some time to evaluate our options and the appropriate next steps.”

    Final federal approval secured for Gross Reservoir Expansion Project — @DenverWater #ColoradoRiver #COriver #aridification

    The Gross Reservoir Expansion Project will add 77,000 total acre feet — 72,000 for Denver Water use and 5,000 for an environmental pool that provides additional water for South Boulder Creek during low-flow periods — nearly tripling reservoir capacity.

    Here’s the release from Denver Water:

    [On July 17, 2020], the Federal Energy Regulatory Commission ordered Denver Water to proceed with design and construction to expand Gross Reservoir in Boulder County.

    Seventeen years ago, Denver Water began the federal environmental permitting process that lead to approvals by the Colorado Department of Public Health and Environment and U.S. Army Corps of Engineers in 2016 and 2017.

    “Obtaining the Federal Energy Regulatory Commission order to move forward with the Gross Reservoir Expansion Project brings a comprehensive 17-year federal and state permitting process — one that involved nearly 35 agencies and organizations — to a close,” said Denver Water CEO/Manager Jim Lochhead. “This order directs Denver Water to move ahead with construction to meet mandated milestones and timelines.”

    “Expanding Gross Reservoir is a critical project to ensure a secure water supply for nearly a quarter of the state’s population. The project provides the system balance, additional storage and resiliency needed for our existing customers as well as a growing population. We are seeing extreme climate variability and that means we need more options to safeguard a reliable water supply for 1.5 million people in Denver Water’s service area,” Lochhead said.

    The design phase of the Gross Reservoir Expansion Project is expected to wrap up by mid-2021 and will be followed by four years of construction. The project involves the raising of the existing 340-foot-tall Gross Dam by an additional 131 feet, which will increase the capacity of the reservoir by 77,000 acre-feet, and includes 5,000 acre-feet of storage dedicated to South Boulder Creek flows that will be managed by the cities of Boulder and Lafayette.

    “We are committed to working closely with the Boulder County community to ensure safety, be considerate neighbors and retain open, two-way communication channels during this construction project,” said Jeff Martin, program manager for the Gross Reservoir Expansion Project. “We will continue to seek community input on topics such as traffic control plans, hauling traffic schedules, tree removal plans, and other construction-related activities.”

    The FERC order, along with the permitting conditions put in place by CDPHE and the Corps, further commits Denver Water to implement environmental improvements by putting in place measures evaluated in the environmental assessment issued in February 2018.

    The project relies on the expansion of an existing footprint — without the placement of a new dam, reservoir or diversion structure; it also benefits from an original design that anticipated eventual expansion. Increasing the capacity of Gross Reservoir was a specific and formal recommendation from the environmental community as an alternative to construction of the proposed Two Forks Reservoir in the 1980s.

    Denver Water has committed more than $20 million to more than 60 different environmental mitigation and enhancement projects that create new habitat and flow protections to rivers and streams on both sides of the Continental Divide as a result of the Gross Reservoir Expansion Project. According to Colorado officials, those commitments will have a net environmental benefit for the state’s water quality.

    This project has earned the support of major environmental groups including Colorado Trout Unlimited, The Greenway Foundation and Western Resource Advocates; local, state and federal elected officials (including Colorado’s last five Governors); and major business and economic development groups, among others.

    An expanded Gross Reservoir is critical to Denver Water’s multi-pronged approach — including efficient water use, reuse and responsibly sourcing new storage — to improve system balance and resiliency while contributing to water security for the more than 1.5 million people in the Denver metro area.

    The FERC regulates the production of hydropower in the United States. As a Federal Power Act project dating back to 1954, expanding Gross Reservoir required the FERC’s approval of Denver Water’s application to amend its hydropower license. This approval and order carry the force of law and are the final federal authority over the reservoir project.

    For more information on the Gross Reservoir Expansion Project, visit http://grossreservoir.org.

    Denver Water’s collection system via the USACE EIS

    Alternative plan to Wild and Scenic River designation for upper #ColoradoRiver OK’d — @AspenJournalism #COriver #aridification

    A view of the popular Pumphouse campground, boat put-in and the upper Colorado River. The BLM and Forest Service recently approved an alternative management plan that acts as a workaround to a federal Wild & Scenic designation. Photo credit: Brent Gardner-Smith/Aspen Journalism

    From Aspen Journalism (Heather Sackett):

    Participants in a 12-year process to establish protections for a stretch of the upper Colorado River are calling the finished product — which amounts to a workaround of a Wild and Scenic River designation — a success.

    Last month, the Bureau of Land Management and the U.S. Forest Service formally approved the “Amended and Restated Upper Colorado River Wild and Scenic Stakeholder Group Management Plan.” The plan lays out a blueprint for protecting the “outstandingly remarkable values,” or ORVs, of the Colorado River from Kremmling to Glenwood Springs, with an emphasis on recreational floatboating and fishing.

    The ORVs must either be a unique, rare or exemplary feature located on the river or shoreline; contribute to the functioning of the river ecosystem; or owe their existence to the presence of the river. The plan seeks to balance these ORVs with water development and use by Front Range water providers and Western Slope water users.

    To ensure protection of the ORVs, the plan includes voluntary cooperative measures that the participants could take, such as the strategic timing of reservoir releases, enhancing spring peak flows and agreements with water users to acquire water rights, which would be used to preserve the natural environment.

    The plan includes a provision that addresses two big uncertainties that would lead to more transmountain diversions from the Colorado River: Denver Water’s Moffat Collection System Project and the Northern Colorado Water Conservancy District’s Windy Gap Firming Project. The “poison pill” provision would allow any stakeholder to withdraw support for the plan if those projects — which are still in the permitting phase and mired in litigation, and which would provide a combined 48,000 acre-feet of water for the Front Range — negatively impact streamflows, especially for boating.

    Six interest groups — conservation/environment/fishing; local government; recreational floatboating; state interests; Front Range water users; and Western Slope water users — have been working on crafting the plan since 2008. The Eagle River Watershed Council has been involved as a stakeholder since 2013, said executive director Holly Loff.

    “It’s really exciting, and what a huge collaborative effort this has been, and I can’t really think of other situations that have been larger in scope and larger in the number of collaborators and all with very diverse interests — and we found a way to make it work,” Loff said. “It’s an amazing feat, really.”

    The scenic, and sometimes wild, Rodeo Rapid, one of the few rapids on the upper Colorado River between Pumphouse and Dotsero. Photo credit: Brent Gardner-Smith/Aspen Journalism

    Opposition to W&S

    The alternative management planning process came about after the BLM in 2007 found that 54 miles of the upper Colorado River from Gore Canyon to just east of No Name Creek in Glenwood Canyon possessed enough ORVs that they were eligible for a federal Wild & Scenic River designation. Created by an act of Congress in 1968, the National Wild and Scenic Rivers System seeks to preserve rivers with outstandingly remarkable scenic, recreational, geologic, fish and wildlife, historic and cultural values in a free-flowing condition.

    There are two ways that a river can be designated as Wild & Scenic: The secretary of the Interior can designate a river if a state governor requests it or Congress can designate a river, usually after a land-use agency conducts a study to see whether it’s eligible.

    Designation as Wild & Scenic brings protection from development. For example, new dams cannot be constructed on the designated stretch and federal water-development projects that might negatively affect the river are not allowed.

    But the possibility of federal government involvement and potential restrictions on water development on the upper Colorado doesn’t sit well with some groups. Municipal water providers such as Denver Water and Northern Water divert water from the Colorado’s headwaters to Front Range cities.

    “A lot of members of the water community find the idea of a Wild & Scenic designation kind of frightening and prohibitive,” said Colorado Water Conservation Board Stream and Lake Protection Section Chief Linda Bassi. “It would prevent potentially new reservoirs along a Wild & Scenic river (and) certain types of structures, and that is why the water community has typically been a little leery of Wild & Scenic designation.”

    In 2009, the Colorado General Assembly established the Wild and Scenic Rivers Fund. Despite what its name suggests, the fund is not dedicated to establishing Wild & Scenic designations of rivers, but to avoiding the federal designation through “work with stakeholders within the state of Colorado to develop protection of river-dependent resources as an alternative to wild and scenic river designation.”

    The Upper Colorado River Wild and Scenic Stakeholder Group has been the recipient of money from the state fund, which is allocated up to $400,000 a year and administered by the Colorado Water Conservation Board. According to a CWCB memo from May, when staff reviews requests for these funds, they evaluate whether projects will promote collaboration among traditional consumptive water interests, including irrigation, and non-consumptive interests, including recreation and the environment, and whether the project will still enable Colorado to fully use water it is allocated.

    “If we tried to go through designation, we don’t know if it would have ever made it past the state of Colorado,” said Kay Hopkins, outdoor recreation planner for the White River National Forest. “The state would have had to be supportive of our determination.”

    Despite its renowned river rafting, fishing and scenic beauty, which contribute to the recreation-based economy of many Western Slope communities, Colorado has just 76 miles of one river — the Cache La Poudre — designated as Wild & Scenic. That’s less than one-tenth of 1% of the state’s 107,403 river miles.

    Instead of a federal designation, the CWCB considers its instream-flow program to be a primary tool in the effort to protect ORVs. Instream flows are in-channel water rights aimed at preserving the natural environment to a reasonable degree. As a part of the alternative management plan process, the CWCB secured three instream-flow rights that date to 2011 on the upper Colorado River — from the confluence of the Blue River to Piney River; from Piney River to Cabin Creek; and from Cabin Creek to the confluence with the Eagle River.

    Bassi, who runs the state’s instream-flow program, has participated in the state interests group since planning began in 2008.

    “Those flow rates are designed primarily to meet the needs of fish,” Bassi said. “But they will help to maintain flows that provide for some levels of boating experiences.”

    This map shows a stretch of the upper Colorado River, between Kremmling and Glenwood Springs, that is subject to a new framework designed to protect ecological and recreational values, in balance with the needs of water users on the Western Slope and Front Range. Graphic credit: Upper Colorado River Wild and Scenic Stakeholder Group

    Pragmatic Discussions

    The Forest Service and BLM approval of the alternative management plan means that the stretch of the upper Colorado River has been deferred from Wild & Scenic eligibility. But if the plan fails or any of the stakeholders enact the “poison pill” provision, the river could revert to being considered for eligibility, meaning it would once again be up for federal scrutiny, something some stakeholders want to avoid.

    “That is the hammer behind the long-term commitments,” said Rob Buirgy, coordinator for the stakeholder group.

    Eagle County Commissioner and Colorado River Water Conservation District Board member Kathy Chandler-Henry believes the strength of the alternative management plan is the input of its many participants.

    “My first thought was the alternative management plan must be a lesser system of protection, but in my mind, it has not turned out to be that way because there are so many players at the table,” she said. “It doesn’t seem like a lesser process. It seems like a more publicly engaged process.”

    Loff was more pragmatic.

    “I don’t think (the alternative management plan) is better, but I don’t know that this group ever would have agreed to a standard Wild & Scenic designation. I don’t think that would have happened at all,” she said. “I think it’s better that we have this.”

    Aspen Journalism is collaborating with the Aspen Times and other Swift Communications newspapers on coverage of water and rivers. This story was published online and printed in the Aspen Times on July 11, 2020.

    @DenverWater files appeal to #Boulder District Court ruling that the Gross Reservoir Expansion Project must go through 1041 process

    Gross Reservoir. Photo: Brent Gardner-Smith/Aspen Journalism

    From The Boulder Daily Camera (Charlie Brennan):

    The action filed to the Colorado Court of Appeals raised several issues to be addressed by the higher court, including whether Boulder District Court Judge Andrew Macdonald erred in his Dec. 27 decision by concluding Boulder County had not exceed it jurisdiction, abused its discretion or misapplied the law in determining it had regulatory control over the project.

    “While we appreciate the district court’s consideration, we respectfully disagree with the conclusion and have decided to exercise our right to further review by the court of appeals,” Denver Water spokesman Travis Thompson said in a statement.

    “The Gross Reservoir Expansion Project is a vital component of developing a more secure, reliable drinking water supply for a quarter of the state’s population,” he added. “In the face of the uncertainties of climate change that bring more frequent and extreme droughts and precipitation events, we’ve come together with partners on both sides of the divide to ensure the project benefits the environmental health of our entire state.”

    […]

    Gross Dam enlargement concept graphic via Denver Water

    Denver Water, which serves 1.4 million customers in the Denver metro area, but none in Boulder County, had planned to start construction in 2019 on what would be the largest construction project in Boulder County history, raising Gross Dam by 131 feet to a height of 471 feet, and increasing the capacity of the reservoir by 77,000 acre-feet.

    @DenverWater ‘evaluating options’ after Gross project ruling — The Arvada Press #ColoradoRiver #COriver #aridification

    Gross Reservoir, west of Boulder. Photo by Brent Gardner-Smith/Aspen Journalism

    From The Arvada Press (Casey Van Divier):

    A court ruling from the end of 2019 determined Denver Water officials must obtain an additional permit for the Gross Reservoir Expansion Project — a project that Arvada is depending on so it can continue developing land…

    Arvada has a contract to purchase raw water from the reservoir and, in return, is sharing the cost of the project with Denver Water…

    Denver Water is one of two sources through which Arvada obtains its water, with the other being Clear Creek, said Jim Sullivan, the city’s former director of utilities.

    In total, the city has the rights to roughly 25,000 acre-feet of water, with about 19,000 of that provided through its existing contract with Denver Water, he said.

    “We have a comprehensive plan that shows what the city limits will eventually grow to” by 2065, when an estimated 155,000 people will live in Arvada, Sullivan said. This plan would require approximately 3,000 additional acre-feet of water, which will be provided by the expansion project.

    If the project was canceled, the city would need to halt development until it could secure alternate resources, Sullivan said.

    Those other resources “have been harder and harder to come by,” said Arvada water treatment manager Brad Wyant. Other entities have already laid claim to the other major water supplies in the area, he and Sullivan said.

    “The next big water project will be some kind of diversion of water from the Western Slope to the Denver area,” Sullivan said. This would be a major endeavor and “there’s nothing even on the horizon at this point,” he said, making the success of the Gross project a necessity for Arvada development.

    So far, the city has contributed about $3 million to the project, with plans to contribute about $100 million by 2030.

    The contributions are funded through Arvada Water’s capital improvement budget, which consists of one-time tap fees that customers pay when they first connect to the Arvada Water system. Resident’s bimonthly water billing funds ongoing operations and will not be used for the Gross project, Sullivan said.

    Denver Water has estimated the project will cost a total of $464 million.

    “If we can’t save the rivers in Grand County, every river in Colorado is doomed” — Kirk Klancke #ColoradoRiver #COriver

    From The Colorado Sun (Moe Clark):

    For decades, the Fraser River has struggled with low flows, rising stream temperatures, sediment build-up, plummeting fish populations and degrading aquatic habitats due in large part to Front Range water diversions that drain 65% of the river.

    But after years of heated negotiations — and the formation of a partnership between environmentalists, Grand County officials and Front Range water diverters — some stretches of the Grand County tributary of the Colorado River have started to show improvement.

    Some are heralding the success as the beginning of a new era of collaboration between historically fraught Front Range and Western Slope water stakeholders…

    Proponents of the collaboration have rejoiced at the results of the work, saying that it’s the first time that major Front Range water diverters have participated in meaningful river restoration projects, and have taken responsibility for damage done to Colorado’s rivers. The partnership, dubbed the Grand County Learning By Doing Cooperative Effort, or LBD, includes the two biggest water utilities in the state, Denver Water and Northern Water, as well as Trout Unlimited, Grand County officials and Colorado Parks and Wildlife.

    The partners celebrated their first success in 2018: the completion of a $200,000 restoration project called the Fraser Flats Habitat, which rehabilitated a mile of the river near Tabernash by narrowing the streambed to increase the river’s depth and velocity, to improve the aquatic ecosystem.

    A winter wonderland in Winter Park, Colorado, near the west portal of the Moffat Tunnel, which delivers water from the Fraser and Williams Fork River basins, under the Continental Divide and on to the Moffat Treatment Plant in Lakewood, Colorado. Photo credit: Denver Water. (Photo taken in winter of 2016-2017.)

    For decades, the Fraser River has struggled with low flows, rising stream temperatures, sediment build-up, plummeting fish populations and degrading aquatic habitats due in large part to Front Range water diversions that drain 65% of the river.

    But after years of heated negotiations — and the formation of a partnership between environmentalists, Grand County officials and Front Range water diverters — some stretches of the Grand County tributary of the Colorado River have started to show improvement.

    Some are heralding the success as the beginning of a new era of collaboration between historically fraught Front Range and Western Slope water stakeholders. But with future restoration projects being contingent on two new water diversion projects that will siphon even more water from the Fraser to the Front Range, some worry that the efforts might only be a mirage.

    “They’re basically putting a Band-Aid on the issue, they’re not helping the underlying cause of the problem, which is that too much water is being taken out of a river to meet human needs,” said Jen Pelz, wild rivers program director for the organization WildEarth Guardians.

    Proponents of the collaboration have rejoiced at the results of the work, saying that it’s the first time that major Front Range water diverters have participated in meaningful river restoration projects, and have taken responsibility for damage done to Colorado’s rivers. The partnership, dubbed the Grand County Learning By Doing Cooperative Effort, or LBD, includes the two biggest water utilities in the state, Denver Water and Northern Water, as well as Trout Unlimited, Grand County officials and Colorado Parks and Wildlife.

    The partners celebrated their first success in 2018: the completion of a $200,000 restoration project called the Fraser Flats Habitat, which rehabilitated a mile of the river near Tabernash by narrowing the streambed to increase the river’s depth and velocity, to improve the aquatic ecosystem.

    Kirk Klancke, pictured Aug. 21, 2019, in front of the Fraser Flats area, was the visionary for the restoration efforts that improved fish habitat along the 1-mile stretch of the Fraser River. The efforts, which were partially funded by Denver Water, involved narrowing parts of the river to create deeper channels and faster flows. (Matt Stensland, Special to The Colorado Sun)
    Seeing the river flowing again brought tears to the eyes of Kirk Klancke, president of the Colorado headwaters chapter of Trout Unlimited and longtime resident of Grand County.

    “It was like I was looking at a completely different river,” said Klancke, who has been an integral part of the collaborative. “In the 48 years I’ve lived in Grand County, it was the first time that I saw the river actually looking healthier.”

    “We’ve got the most heavily diverted county in Colorado, about 300,000 acre-feet a year comes out of Grand County. The next highest competitor is Pitkin County, with 98,000… We consider ourselves ground zero. If we can’t save the rivers in Grand County, every river in Colorado is doomed.”

    Raising a Dam — @ColoradoStateU

    Here’s the release from Colorado State University (Anne Manning):

    Gross Dam spillway design being put to the test by CSU civil engineers

    On any given day, the roar of water cascading over a 20-foot-high dam spillway greets visitors to Colorado State University’s Hydraulics Laboratory. Muck boots are required footwear, as water from the spray spreads across the floor, drains into an under-floor reservoir, and flows back toward an outtake pipe for recycling.

    The experimental spillway, constructed by CSU civil engineers, is a test bed for an ambitious dam-raising project in southwest Boulder County by Denver Water. CSU engineers are applying their hydraulics expertise to help verify key design and functionality aspects of the spillway, part of the public utility’s planned upgrade to Gross Dam. The reservoir impounded by Gross Dam provides water to more than 1.4 million residents along Colorado’s Front Range.

    The engineering team designing the project for Denver Water, Stantec and primary subcontractor AECOM, commissioned civil engineering professors Chris Thornton and Rob Ettema to create a 1:24 working scale model of the heightened dam’s new spillway. The spillway is the only portion of the dam over which water passes.

    A project of this magnitude requires a physical hydraulic model, Thornton said.

    “Computers have come a long way, but they’re not even close to being able to resolve what’s happening in terms of interaction of forces,” Thornton said. “Turbulence and air entrainment are very hard to model accurately.”

    Stepped spillway

    Taylor Hogan, a civil engineering master’s student and Hydraulics Laboratory manger, led the design and building of the model, which required close to 500 custom-built pieces. It is called a stepped spillway, which dissipates energy from the water as it flows over the dam. The steps slow the water, trap air bubbles, and allow water to safely descend. Adding to the model construction’s complexity is a slight arch to the spillway profile – mimicking the current profile.

    The CSU engineers are now testing and documenting performance, including capacity, flow rate, and ability to handle a major influx of water from a storm or natural disaster. When complete, Gross Dam’s will be the tallest stepped spillway in the United States.

    The planned height of the dam necessitated the stepped design. The dam is slated to be raised 131 feet over its current height of 340 feet, increasing the capacity of Gross Reservoir by about 25 billion gallons.

    “The expansion will allow Denver Water to add balance and resiliency to its water collection system, which today is at risk of damage from natural disasters such as wildfires and floods,” said Jeff Martin, Denver Water’s Gross Reservoir Expansion Project program manager. “It will also help to manage the greater uncertainty that comes with a changing climate.”

    The Stantec/AECOM team specified that the spillway be able to manage extreme high flows they estimate to be possible during the rare occurrence of a massive storm.

    “The spillway is designed very conservatively and must perform safely when exposed to extreme conditions,” Ettema said.

    Engineering students Taylor Hogan and Blake Biethman stand next to the Gross Reservoir expansion stepped spillway model, Sept. 9, 2019. Photo credit: CSU/Bill Cotton

    Remaining work

    The CSU researchers are wrapping up the modeling work for Stantec/AECOM to complete the spillway design. The remaining work includes optimizing the layout of the energy-dissipation basin at the bottom of the spillway, to ensure Gross Dam’s design meets safety requirements. Design engineering on the overall dam project is expected to extend through the end of 2020.

    Water flows through the distilling basin at the bottom of the spillway model. Photo credit: CSU/Bill Cotton
    Gross Reservoir in the mountains to the southwest of Boulder. Denver Water hopes to increase the height of the dam 131 feet, to a new height of 471 feet, to store three times as much water, which it says will help it meet increasing demands and to better weather severe droughts.

    Gross Reservoir Expansion Project update

    Gross Dam enlargement concept graphic via Denver Water

    From TheDenverChannel.com (Jace Larson):

    The project will require significant construction over seven years to increase the reservoir’s holding capacity to 119,000 acre-feet of water.

    When built, the dam will be the tallest in Colorado.

    Denver Water says the additional space is needed to spread out capacity outside of Denver for the water utility used by 1.4 million people in the city and its surrounding suburbs.

    The proposed construction project is not without opposition from neighbors and environmentalists who say they will endure years of construction on a water project that will never provide water to their taps.

    “Boulder County is going to host this reservoir but gets no water from it. We derive no benefit from it. We only pay the price of having this thing in our county,” said Tim Guenthner, who lives just above the dam in a subdivision of about 1,000 people.

    Denver7 decided to take a 360 look at this issue and gathered perspectives from five people connected to the proposed construction project…

    Boulder County Commissioners have also taken a stance that Denver Water must get local permits before it can start the project.

    Denver Water spokesman Travis Thompson said Denver Water doesn’t believe the law requires that and points out it has undergone numerous environmental studies and worked through the state permit process. This issue will likely be decided by another judge…

    Denver Water’s Gross Dam project manager, Jeff Martin, acknowledges the project will cause noise for neighbors.

    “Well we don’t hide from the fact there’s going to be some disruption from the noise, but we are looking at ways of minimizing that noise,” Martin said.

    As an example, Denver Water decided to move the quarry needed to make cement to a portion of the lake that will be covered by water once more capacity is added. The original plan had the quarry on a portion of land jetting out into the lake.

    Have an on-site quarry will also mean less truck traffic.

    Martin said even with conservation efforts, Denver Water needs more capacity. He said experts have provided the water utility with data showing there will be 5 million more people in Colorado by 2050.

    Denver water has 90% of its storage lakes west and south of the metro area, but only has 10% up north. This new dam project will add significantly more water storage north of the city.

    “That’s important because if we have a catastrophic event or a drought in one of the systems, it leaves us depending on the other system,” he said. “What we want to do is create a little bit more balance and put more water in Gross Reservoir. This project is going to triple the size of the reservoir.”

    […]

    Kirk Klanke is a member of Trout Unlimited, an environmental group seeking to protect and restore rivers across the country.

    His perspective is one many wouldn’t expect from a member of the environmental group. He’s a supporter of the new dam.

    “I think it’s extremely selfish to think we shouldn’t grow,” he said.

    He says Denver Water has the legal right to build more capacity someplace. Gross Reservoir is the best option.

    “Raising an existing dam has far less environmental damage than building a new one somewhere else,” Klanke said.

    He says Denver Water has agreed to put significant effort into protecting the Colorado River. When it is hot out, river temperatures rise if there’s only a little water flowing.

    Denver Water has agreed to keep water in the river during those periods and fill the lake during spring runoff. It will also draw water at different places in the river to minimize the impact to one area.

    Gross Reservoir. Photo: Brent Gardner-Smith/Aspen Journalism

    @DenverWater hires contractor for Gross Reservoir Expansion Project

    The Gross Reservoir Expansion Project will add 77,000 total acre feet — 72,000 for Denver Water use and 5,000 for an environmental pool that provides additional water for South Boulder Creek during low-flow periods — nearly tripling reservoir capacity.

    From Denver Water:

    Denver Water’s five-member Board of Water Commissioners on Wednesday approved a two-year, $4.5 million contract with Kiewit Barnard, a Joint Venture, for planning and pre-construction work during the final design phase of the $464 million Gross Reservoir Expansion Project.

    If the team’s performance during the planning and pre-construction phase meets Denver Water’s expectations, a separate contract to build the dam may be signed between Denver Water and Kiewit Barnard.

    “This is a major milestone in our 16-year effort to expand Gross Reservoir, as its original designers intended decades ago, to ensure a more reliable water supply in a future marked by greater uncertainty in weather patterns,” said Denver Water CEO/Manager Jim Lochhead.

    Denver Water, the state’s largest water utility, serves 1.4 million people in Denver and surrounding suburbs.

    Gross Dam enlargement concept graphic via Denver Water

    The Gross Reservoir Expansion Project will raise the height of the existing dam, completed in 1954, by 131 feet, allowing the reservoir to nearly triple in size. When complete, the reservoir will be capable of holding about 119,000 acre-feet of water to provide greater system balance and resiliency.

    The selection process for a construction manager/general contractor for the project began in August 2018 with information meetings, followed by a formal Request for Qualifications in October 2018. Three teams responded to the request and underwent extensive evaluations and interviews by a selection team that included experts from Denver Water, the project’s design engineer and subject matter experts.

    The selection team focused on a value-based competitive process that examined each team’s qualifications, project approach, technical approach and cost.

    “Kiewit Barnard met Denver Water’s high bar for doing a project that’s important not only to the 1.4 million people who rely on us for their drinking water, but also to the people who live around the reservoir,” said Jeff Martin, Denver Water’s program manager for the expansion project.

    “We were impressed by the team’s experience with roller-compacted concrete dam construction, innovative approach and commitment to safe and responsible building practices,” Martin said.

    The project calls for adding 900,000 cubic feet of concrete to the existing structure and building the first roller-compacted, concrete, arch dam in the United States. When complete, the Gross Dam will be the tallest in Colorado and the tallest roller-compacted concrete dam in the U.S.

    “Kiewit Barnard, a Joint Venture, is very pleased to have been selected to work on this important project to support water demand for the greater Denver area,” said Jamie Wisenbaker, senior vice president of Kiewit Infrastructure Co., and an executive sponsor of the project. “We believe the team’s collective infrastructure experience in dam and reservoir construction and engineering will be a huge asset and look forward to safely delivering a high-quality project on time for Denver Water and the region.”

    Kiewit is one of North America’s largest construction and engineering organizations with extensive heavy-civil experience in water/wastewater construction, including serving as lead contractor on the Oroville Spillways Emergency Recovery project in California. Kiewit is the No. 1 contractor for dams and reservoirs in the United States according to Engineering News-Record. The company also has strong roots and experience in Denver and across Colorado, including having constructed the Interstate 25 T-REX Expansion project, the U.S. 34 Big Thompson Canyon emergency repair project and the I-225 Light Rail Line project. The company also is building Denver Water’s new Northwater Treatment Plant.

    Barnard Construction Co. Inc. brings a long track record of safety and quality on infrastructure projects in the U.S., including construction on more than 80 dams, reservoirs and dikes over the last four decades. The company’s work in this area includes new construction, raising dams and conducting emergency repairs. In 2019, Barnard was honored as a “Global Best Project” award winner by Engineering News-Record in the dam/environment category for the Muskrat Falls North and South Dams project located in Muskrat Falls, Newfoundland and Labrador, Canada.

    The Gross Reservoir Expansion Project is awaiting a final federal government approval from the Federal Energy Regulatory Commission. Provided the remaining federal approvals come by the end of this year, the project is slated to be complete in 2025.

    When finished, the expanded reservoir and associated mitigation projects will create what the Colorado Department of Public Health and Environment has described as a net environmental benefit to state water quality by generating a wide range of environmental improvements to streams, river flows and aquatic habitats.

    Moffat Collection System Project update: “Our problem is rooted in demand and resiliency” — Jeff Martin

    Gross Reservoir , in Boulder County, holds water diverted from the headwaters of the Colorado River on the West Slope. The reservoir is part of Denver Water’s storage system. Photo: Brent Gardner-Smith/Aspen Journalism

    From The Colorado Sun (Amanda K. Clark):

    Raising the 55-year-old dam near Boulder is essential to keep a stable water supply in a changing climate, utility says. Residents insist conservation could be just as effective.

    Denver Water — Colorado’s largest and oldest utility company — in July 2017 received one of the final permits needed to raise Gross Reservoir Dam by 131 feet to increase water storage capacity by 77,000 acre-feet, or an additional 25 billion gallons of Western Slope water…

    The expansion, in the works for more than a decade, is part of the company’s long-term plan to help meet increasing water demands along the Front Range and buffer customers from future water-supply variability due to climate change…

    Denver Water has been met with sustained opposition from Boulder County residents and a handful of environmental groups who say the utility can address its water needs through expanded water conservation efforts on the Front Range.

    But with Colorado’s population growth showing no signs of slowing, water conservation may be inadequate to address projected shortages in the coming decades.

    Other concerns raised by opponents include sustained disruption to surrounding residents, increased traffic, health concerns and environmental impacts to fish and wildlife.

    Gross Reservoir is filled primarily from snowmelt that flows from the Fraser River, a tributary of the Colorado River. The water is transported underground from west of the Continental Divide to the east by a pipeline called the Moffat Water Tunnel.

    The controversy over the Gross Reservoir expansion, estimated to cost $464 million, echoes an all-too-familiar story: a highly contentious discussion of tradeoffs that has rippled across the Western United States for decades.

    As cities and states across the West grapple with swelling population alongside diminishing water supplies as a result of climate change, water-resource agencies such as Denver Water are faced with the delicate task of balancing the health of ecosystems with municipal, agricultural and recreational needs…

    Jeff Martin, Denver Water’s project manager for the expansion project, doesn’t skirt around the controversy. He recognizes that the project is going to cause disruption and says that Denver Water has worked with the residents to find ways to minimize the project’s impact.

    “This has been a process,” Martin said. “We started in 2004, it took 13 years to move through the environmental assessment and permitting process. And we’ve made a lot of changes and adjustments to our plans since the beginning.”

    “No single solution is out there,” he said. “Our problem is rooted in demand and resiliency, and what I mean by resilience is that we have to make sure we have the water when we need it, and where.”

    […]

    For Patty Limerick, director of the CU Boulder’s Center for the American West and former Colorado Historian, you can’t talk about water issues on the Front Range without first looking back in time.

    When early white explorers arrived here, they deemed the Front Range unfit for settlement due to lack of water. Today, 1.4 million Denver residents have access to clean drinking water due in large part to Denver Water’s enormous infrastructure web that diverts water from the South Platte, Blue, Williams Fork and Fraser river watersheds to be stored in a network of reservoirs spread over eight counties, including Dillon, Strontia Springs and Cheesman.

    “One thing that I find fascinating, and is important to talk about, is the incredible amount of engineering that had to occur to make any of this possible in the first place,” Limerick said.

    “We, as a society, have to recognize the improbable comfort that was made possible by a taken-for-granted, but truly astonishing, water infrastructure that was put in place a hundred years ago.”

    […]

    “The year 2018 was very similar to what we would expect to see under a climate change regime. And that was a very intense but short-term drought,” said Taryn Finnessey, senior climate change specialist with the Colorado Water Conservation Board.

    “We saw some reservoirs in the state declined by 50 percent in a three- to four-month period. So that obviously could not be sustained multiple years in a row,” she said. “Water providers are increasingly integrating climate change models into their water supply projections. They know that what we’ve seen in the past might not fully represent what we might see in the future. Denver Water is one of the more advanced utilities when it comes to this.”

    Finnessey says it’s not just about how much precipitation falls from year to year. It also has a lot to do with increasing temperatures, contributing to the long-term drying out of the West, a phenomenon scientists are referring to as aridification. As temperatures rise, more moisture is sucked up by the atmosphere through evapotranspiration, leaving less viable water for humans-use in the system.

    “We are planning for infrastructure that will be built in the next 20 years, that is supposed to last for the following 100 years,” said Reagan Waskom, director of Colorado State University’s Colorado Water Institute. “Our world is changing significantly faster than that. And not in a linear way. How do we adapt to that?

    “Water managers have to plan for extremes,” he added. “A year like this year is an argument for reservoirs. Even with climate change, you’re still gonna have some good years. And we need to be able to capture it and save it for the bad years, whether that’s in underground aquifers or in reservoirs.”

    Denver Water’s collection system via the USACE EIS

    Gross Reservoir expansion makes sense — Boulder Daily Camera

    The dam that forms Gross Reservoir. Photo: Brent Gardner-Smith/Aspen Journalism

    From the editorial board (Quentin Young) of the Boulder Daily Camera:

    Denver Water serves 1.4 million people in Denver and surrounding communities, and that figure will rise substantially in the coming decades. As more residents demand service, climate change increasingly will exert its own strain on the water supply. One of the primary ways the utility plans to meet this imminent challenge is by expanding one of its northern storage facilities, Gross Reservoir, in the foothills southwest of the city of Boulder.

    The project has met with intractable opposition. It’s the subject of lawsuits and uncertain government reviews. Neighbors are scandalized by the prospect of years of disruptive construction, and some environmentalists contend the project won’t even be able to perform its intended purpose.

    But a dispassionate consideration of the project leads to the conclusion that Denver Water’s plan to expand Gross Reservoir is a reasonable and responsible measure, provided the utility proceeds with the utmost sensitivity to the residents who would be impacted by construction and with the expectation that increased storage is no substitute for continued conservation efforts.

    The roots of the project go back to the proposed Two Forks Dam. Denver Water had proposed storing water from the Colorado and Platte rivers by building a 615-foot dam southwest of Denver near Deckers. But a coalition of environmental groups successfully opposed the project, which the Environmental Protection Agency spiked in 1990. Environmentalists argued at the time that a better option would be for Denver Water to expand a storage facility it already operated: Gross Reservoir.

    Gross Dam enlargement concept graphic via Denver Water

    Now that the utility is following opponents’ former advice, environmentalists have changed their mind about Gross. The project would raise Gross Dam by 131 feet to 471 feet, roughly tripling the reservoir’s current capacity of 41,811 acre-feet (for comparison, Denver Water’s largest reservoir, Dillon, has a capacity of more than 257,000 acre-feet). Critics say the expansion would result in the state’s tallest dam, and much of the opposition focuses on the project’s substantial environmental impact. It would require years’ worth of noisy construction, traffic and the removal of about 650,000 trees. The reservoir pulls water from the headwaters of the Colorado River, and critics argue that the utility should refrain from further depleting that waterway, which runs all the way to the Gulf of California and is subject to the Colorado River Compact, an agreement that governs water allocation in seven states that rely on the river as an invaluable resource. Population growth in the Southwest has stressed the river, and climate change is expected to further compromise the river’s capacity to deliver water to users. Some Gross expansion opponents even assert that there won’t be enough water available from the Colorado River Basin to fill a bigger reservoir. And anyway, the opponents say, water needs can be met through conservation rather than dam-building.

    Construction to expand Gross Reservoir would indeed bring acute hardship to nearby residents, and concern for local environmental damage should not be dismissed. But construction is temporary, and the environmental impact seems less intolerable than merely regrettable when weighed against the project’s purpose of ensuring for decades the delivery of a vital resource to thousands of people.

    Utilities should be judicious in exercising their rights to Colorado River Basin water, but the volume associated with the proposed Gross expansion is relatively small. The entire Denver Water utility accounts for less than 2% of the state’s total water use, while it serves about 25% of the population. As part of planning for the expansion, Denver Water worked with West Slope communities in the Colorado River Basin to earn support for the project, efforts that in 2012 resulted in the Colorado River Cooperative Agreement. The CRCA, which depends on final approval of the Gross Reservoir expansion, calls for Denver Water to help restore habitats and maintain flows in the Fraser River, a Colorado River tributary in Grand County. Some West Slope officials so favor implementation of the CRCA that a Grand County commissioner in March warned of “a ton of litigation” were Boulder to block the Gross expansion.

    Colorado River flows will almost certainly decrease due to climate change in future decades. A widely cited 2017 study suggests the river increasingly will be subject to droughts, and flows could drop more than 35% by the end of the century because of higher temperatures. But this doesn’t necessarily constitute an argument against expanding Gross. No one can claim with certainty that flows would drop such to render useless an expanded reservoir, but Denver Water would certainly be justified in viewing the threat of persistent droughts and lower flows as a reason to increase storage capacity, since there’s more incentive to collect water during the fewer occasions it’s available. The utility would be seen to have failed customers were it to find itself with nowhere to store precious water to which it had rights.

    That Denver Water should do more to promote conservation gets no argument here. The utility’s customers have already demonstrated that they can get by splendidly with reduced volume — they’re using about 20 percent less water today than 15 years ago, according to Denver Water CEO Jim Lochhead — and there’s much room for further conservation. But conservation has limits, and Denver Water says it won’t be able to meet future demand solely by this method. In Denver alone, the current population of 729,000 is expected to swell by more than 20% in just 20 years. Besides, the project is meant not just to add yield to the utility’s system but also stability. The vast majority of Denver Water’s storage is in the south part of its system, and forest fires near those facilities, such as the Buffalo Creek Wildfire in 1996, have exposed a vulnerability that an expanded Gross would address.

    The proposed expansion of Gross Reservoir has provoked waves of protest from Boulder County residents, and the county has asserted what it claims is its right to review the project. Known as a 1041 process, the move is contested by Denver Water. But though Denver Water doesn’t serve Boulder-area residents, water users throughout Boulder County every day enjoy the use of water pulled from the Colorado River, and water customers in such Boulder County communities as Longmont, Louisville, Lafayette, Erie and Superior are participants in the proposed Windy Gap Firming Project, which involves the construction of a whole new reservoir, not just an expansion, west of Carter Lake to store water from the Colorado River Basin. (That project similarly is tied up in litigation.)

    Denver Water has already secured the bulk of required regulatory approvals for the expansion of Gross Reservoir. A final decision from the Federal Energy Regulatory Commission, whose staff has already recommended approval, is pending. Denver Water needs the FERC approval, because Gross also serves as a hydroelectric facility. Roadblocks include a lawsuit brought by a coalition of environmental groups that is led by Save the Colorado and Boulder County’s 1041 review.

    Boulder County officials have a legitimate interest in reviewing what would be the largest construction project in county history, and they are encouraged to take an exhaustive look at Denver Water’s plans. Any objections to the expansion of Gross Reservoir, however, should be based on factors intrinsic to the proposal, not on a mere preference for Gross to be left alone.

    Quentin Young, for the editorial board, quentin@dailycamera.com, @qpyoungnews

    Denver Water’s collection system via the USACE EIS

    Save the Colorado is allowed to intervene in @DenverWater lawsuit v. @BoulderCounty

    Workers build the Moffat Tunnel in the 1920s.

    From The Loveland Reporter-Herald (Sam Lounsberry) via The Denver Post:

    An environmental group’s motion to intervene in a dispute between Denver Water and Boulder County over the proposed expansion of Gross Reservoir was granted by a judge on Tuesday.

    Court documents show Boulder District Judge Andrew Ross Macdonald will allow the group, Save the Colorado, to enter the case as a party on behalf of Boulder County, the defendant in the suit.

    Denver Water filed the complaint against the county after it decided the utility would have to subject its controversial proposed dam expansion — which would be the largest construction project in the county’s history — through the county development approval process.

    The case is still moving through court, with Denver Water trying to avoid subjecting its project to county [1041 regulations].

    On Stressed #ColoradoRiver, States Test How Many More Diversions Watershed Can Bear — KUNC #COriver #aridification

    Gross Reservoir — The Gross Reservoir Expansion Project will raise the height of the existing dam by 131 feet, which will allow the capacity of the reservoir, pictured, to increase by 77,000 acre-feet. The additional water storage will help prevent future shortfalls during droughts and helps offset an imbalance in Denver Water’s collection system. With this project, Denver Water will provide water to current and future customers while providing environmental benefits to Colorado’s rivers and streams. Photo credit: Denver Water

    From KUNC (Luke Runyon):

    The Colorado River is short on water. But you wouldn’t know it by looking at a slate of proposed water projects in the river’s Upper Basin states of Colorado, Utah and Wyoming.

    The river and its tributaries provide water for 40 million people in the Southwest. For about the last 20 years, demand for water has outstripped the supply, causing its largest reservoirs to decline.

    In the Bureau of Reclamation’s 2012 Colorado River Basin Water Supply and Demand Study, you can pinpoint when the lines crossed somewhere around the year 2002. It’s a well-documented and widely accepted imbalance.

    That harsh reality — of the river’s water promised to too many people — has prompted all sorts of activity and agreements within the seven Western states that rely on it. That activity includes controversial efforts in some states in the Colorado River’s Upper Basin to tap every available drop before things get worse.

    The utility that owns [Gross Reservoir], Denver Water, wants to increase the size of the dam by 131 feet, and fill the human-made lake with more water from the headwaters of the Colorado River via a tunnel that traverses the Continental Divide.

    Imagine a tractor trailer hauling dam-building materials making this turn, Long says.

    “If they truck all of this material up our canyon, people in our community are gonna get killed by those trucks. Period,” Long said. “There’s a lot of other issues here but the safety thing should really be a serious priority.”

    Long and his wife, April Lewandowski, live near the reservoir in a community called Coal Creek Canyon. Like many of her neighbors, Lewandowski commutes from the sparsely populated canyon to her job on the state’s dense Front Range. Her daily commute on the canyon’s two-lane highway is the same as a haul route for trucks needed to build the dam addition.

    Long pulls up to a small parking area that overlooks the dam. It’s a deep wall of concrete, stretched between the tree-lined canyon walls of South Boulder Creek.

    “I mean you look at how the land splays out, you can see why they want to (build it),” Long said. “It’s so much wider all the way around.”

    If the expansion goes through, the place where we’re standing will be submerged in water. The addition to Gross Dam will raise it to 471 feet in height, making it the tallest dam in Colorado…

    Denver Water first started taking an expansion of Gross Reservoir seriously after the dry winter of 2002. Exceptional drought conditions took hold across the Mountain West. The utility’s CEO, Jim Lochhead, said in the midst of those historic dry conditions, a portion of its service area nearly ran out of water.

    “This is a project that’s needed today to deal with that imbalance and that vulnerability and to give us more drought resiliency,” Lochhead said.

    Since then, Denver Water has filed federal permits to start construction, and negotiated an agreement with local governments and environmental groups on the state’s Western Slope to mitigate some effects of the additional water being taken from the headwaters.

    Before leaving office, former Colorado Democratic governor and current presidential hopeful John Hickenlooper threw his weight behind the project, giving it an endorsement and suggesting other water agencies in the West take notice how Denver Water approached the process.

    But despite the political heft behind the project, it faces considerable headwinds.

    Environmentalists are suing, arguing the expansion will harm endangered fish. A group of local activists say the additional water will spur unsustainable population growth along the state’s Front Range. In recent months, the utility began sparring with Boulder County officials over whether they were exempt from a certain land use permit.

    Building a 131-foot dam addition does come with baggage, Lochhead said. But he argued his agency has done its part to address some of the concerns, like reducing the number of daily tractor trailer trips up Coal Creek Canyon and planning upgrades to the intersection where trucks will turn onto Gross Dam Road.

    “It is a major construction project. I don’t want to gloss over that. It will have impacts to the local community,” Lochhead said.

    Denver Water staff are doing more outreach in the canyon as well, Lochhead said.

    “We are committed to the project and seeing it through. We’re also committed despite the opposition to working with the local community in doing this the right way,” he said…

    The Gross Reservoir Expansion Project will add 77,000 total acre feet — 72,000 for Denver Water use and 5,000 for an environmental pool that provides additional water for South Boulder Creek during low-flow periods — nearly tripling reservoir capacity.

    The latest scuffle with Boulder County has brought the Gross Dam expansion squarely back into public view. At a county commissioner’s meeting in March, residents criticized Denver Water on all fronts, from specific concerns about the construction itself, to broader concerns about water scarcity in the Colorado River basin…

    “This project represents an effort by Denver Water … to actually grab water while they can, before federal legislation and management of the Colorado River Basin is imposed,” McDermott said.

    What McDermott is referring to is a stark disconnect in the Colorado River watershed. States downstream on the river — Arizona, Nevada and California — signed a new agreement in May called the Drought Contingency Plan that keeps them from becoming more reliant on the Colorado River. It requires cutbacks to water deliveries should levels in Lake Mead, the river’s largest reservoir, continue to drop.

    Meanwhile, upstream in Colorado, Wyoming, Utah and New Mexico, no such agreement was made. Those states wound up agreeing to study the feasibility of a program that would compensate farmers to stop irrigating their cropland if reservoirs dropped, with no solid way to pay for it. They agreed too to better coordinate releases from their biggest reservoirs to aid an ailing Lake Powell. While they figure out how to develop those two concepts, the Upper Basin states keep inching along on their development projects to divert more from the river.

    The 1922 Colorado River Compact, the river’s foundational governing document, gives Upper Basin states the legal cover to continue developing projects like the Gross Reservoir expansion. In the compact, each basin is allocated 7.5 million acre-feet of the river’s water. Over the decades the rapidly growing and intensely farmed Lower Basin has used much more than that. The less populated Upper Basin has never reached its full allotment. Those state have been using roughly 4.5 million acre-feet for the last 13 years, with the rest flowing downstream for the Lower Basin to use as it sees fit…

    Conservation programs tend to be less expensive than massive new projects, [Doug] Kenney said. But additional water supplies stored in reservoirs give more security and reliability. It’s why water leaders push for them, even when the economics don’t make sense.

    Denver Water’s collection system via the USACE EIS

    New Reservoirs, Dams Planned for Colorado Front Range — Engineering News Record

    From the Engineering News Record (Thomas F. Armistead):

    “In the water-scarce West, there is little to no new water,” says Laura Belanger, water resources and environmental engineer with Western Resource Advocates. “What we’re seeing is a shift to a suite of solutions that make the most of our region’s water resources. So the first line is and always should be conservation, because that’s the most cost-effective thing utilities can do, and it’s also fast.”

    […]

    In Colorado’s Front Range, the Northern Colorado Water Conservancy District is accepting qualification statements for construction of Colorado’s tallest new dam in a half-century, with selection of a contractor and notice to proceed by December, says Joe Donnelly, spokesman. The main dam will be a rockfill structure with a hydraulic asphalt core, 360 ft tall and 3,500 ft long at the crest. The dam will impound the 90,000 acre-ft Chimney Hollow Reservoir for the Windy Gap Firming Project. A contract for design was awarded to Stantec in 2016.

    The reservoir would store water for 12 municipalities and other water suppliers. The project has support from both public authorities and some environmental advocates. But six environmental groups are contesting the project in federal court because it will divert 30,000 acre-ft annually from the Colorado River, taxing the already challenged flow of that body.

    Denver Water is proceeding with the expansion of Gross Reservoir, built in the 1950s with a 1,050-ft-long, 340-ft-tall concrete gravity arch dam impounding 42,000 acre-ft of water. Following 14 years of planning, the U.S. Army Corps of Engineers issued a 404 permit in July 2017, allowing Denver Water to raise the reservoir’s dam 131 ft and expand the reservoir’s capacity to 77,000 acre-ft.

    The utility is expanding the reservoir to address a known imbalance in the city’s water system, said Jeff Martin, program manager for the project, in a video on the project’s website. The North System, where Gross Reservoir is located, stores about 30% of the water, and the South System the rest. The imbalance results from differential snowpack runoff on the system’s north and south sides. “This will provide extra insurance and extra reservoir capacity to make sure that we can weather those times when we do have issues in our system,” Martin said…

    Some existing storage facilities are being expanded or are having their water reallocated, and regional water sharing also is beginning to grow, Belanger says. She cites the Chatfield Reservoir, built in 1965 on the South Platte River south of Denver for flood control, as an example. The U.S. Army Corps of Engineers determined that up to 20,600 acre-ft of the water can be reallocated to drinking water and industrial supply, agriculture, environmental restoration and other purposes without compromising its flood-control function. Environmental mitigation and modifications are expected to cost about $134 million.

    Down on the Ground in the Anthropocene City-State — Colorado Central Magazine

    George Sibley

    Full disclosure, I have written articles for the magazine in the past.

    Here’s a look at Denver Water’s Moffat Collection System Project and the Boulder County Commissioner’s hearing on 1041 jurisdiction from George Sibley that’s running in Colorado Central Magazine. Click through and read the whole article. Here’s an excerpt:

    An interesting thing happened mid-March in Boulder which the media seem to have mostly missed. Commissioners from Grand County showed up at a noisy Boulder County commissioners’ hearing on a West Slope-to-East Slope transmountain water diversion project – to testify on behalf of the project. It is probably the first time ever, in the generally contentious history of Colorado water development, that the people in a basin of origin have supported a transmountain diversion project that people in the basin of destination oppose.

    Although this is a story from just beyond our Central Colorado boundaries, it is a story of interest to anyone in the West who is wondering how, or even if, we are going to finally leave the 20th century and venture into the 21st and the Anthropocene Epoch we keep trying to pretend we haven’t brought on ourselves.

    The report on the Boulder County hearing sounded like your usual 20th century public hearing on the kind of issue that seems almost structured to pit environmentalists against the developers of something or other – a hearing in which no one has to listen because everyone already knows what everyone else is going to say.

    The issue in this case pits the usual Front Range environmental organizations against a public utility that everyone loved to hate through the 20th century, Denver Water (DW). DW wants to enlarge the Gross Dam and Reservoir it built in the 1950s in the foothills near Boulder, to hold some additional water it wants to import from the West Slope – its “Moffat Firming Project” which would bring a third more water on average through its Moffat Tunnel Project from the Fraser and Williams Fork Rivers in the Upper Colorado River watersheds…

    For the West Slope and Grand County, DW is both funding and actively participating in planning and executing a Learning by Doing process – essentially, an adaptive management process of active experimentation in learning how to live with less water. Some of it is more conventional work providing funding and expertise to water treatment districts and irrigation districts needing to use less water more efficiently.

    But some of it will actually be what strikes me as “creative environmentalism”: Actually reconstructing some streams to function ecologically with a permanent reduction of water – call it “downsizing” the stream to fit the unignorable realities of the future. Channels are narrowed and deepened to cool the waters, helping both the aquatic ecosystem and the human economy of floaters and fishermen; riparian vegetation is planted to shade the stream and stabilize banks; meanders are induced to give a healthy stability and resilience for the foreseeable diminished future. Half a mile of the Fraser near U.S. 40 has been so ‘remodeled’ and is open to public inspection (and fishing). DW has committed millions to this work. (The CRCA can be found online by browsing for the name in full.)

    @BoulderCounty commissioners affirm right to review Gross Reservoir expansion plans

    Gross Dam enlargement concept graphic via Denver Water

    From The Boulder Daily Camera (Charlie Brennan):

    After more than four hours of impassioned pleas from members of the public Thursday night, Boulder County commissioners voted unanimously that Denver Water’s planned expansion of Gross Reservoir must go through the county’s review process.

    That vote, affirming an earlier finding by Boulder County Land Use Director Dale Case, now poses a significant challenge for the utility, which serves 1.4 million water users in the Denver metro area — none of them in Boulder County — and claims the project is needed to meet the needs of metro population that’s just going to keep growing.

    “I think it’s just critical that local people have their say on this project that affects them the most,” said Boulder County Commissioner Matt Jones, just before the vote was taken…

    Denver Water’s plan had been to start construction this year on a project to raise the Gross Reservoir Dam in southwestern Boulder County by 131 feet to a height of 471 feet and to expand the reservoir’s capacity by 77,000 acre-feet.

    The cost of the endeavor, said to be the biggest construction project ever contemplated in Boulder County, is now estimated at $464 million (in 2025 dollars) and could take at least six years to complete.

    Boulder County Land Use Director Dale Case issued a finding on Oct. 22 that Denver Water’s plans, formally known as the Moffat Collection System Project,were subject to the county’s so-called “1041” review process — that number references the state House bill passed in 1974 allowing local governments to regulate matters of statewide interest through a local permitting process.

    Denver Water however, has argued to the contrary.

    “We contend that state law exempts the expansion from the 1041 process because it was permitted under local land use codes at the time that the state enacted the law authorizing the 1041 review process,” said Denver Water spokesman Travis Thompson.

    Pair of lawsuits challenges need for more #ColoradoRiver water — @AspenJournalism #COriver

    The spillway and dam at the Windy Gap Reservoir on the headwaters of the Colorado River. Photo: Brent Gardner-Smith/Aspen Journalism

    From Aspen Journalism (Lindsay Fendt):

    Two lawsuits making their way through the federal court system are challenging two significant water projects in Colorado designed to divert more water from the Colorado, Fraser and Williams Fork river basins in Grand County.

    The projects — Northern Colorado Water Conservancy District’s Windy Gap Firming project and Denver Water’s Moffat Collection System Project — would provide a combined firm yield of 48,000 acre-feet of water for the sprawling Front Range.

    But environmental groups say government agencies violated the law in the environmental permitting processes of both projects.

    “Our biggest claim is that [the agencies] claim they looked at reasonable alternatives [to the projects],” said Gary Wockner, the director of Save the Colorado, the lead plaintiff on both cases. “But they didn’t look at conservation or efficiency. Water providers are trying to go to big water projects first and not the cheaper option of conservation.”

    Both Northern and Denver Water say they factored in conservation efforts when they calculated water demand and that even aggressive conservation efforts won´t be enough to meet water demand in the future.

    “There are only a few answers for water supply in the future and Windy Gap Firming is one of those options,” said Brad Wind, the general manager of Northern Water. “Without that project, I can’t fathom where we will end up.”

    But some water experts say that the state’s use of population growth as one of the major drivers of water demand was flawed.

    “As population goes up, water demand continues to go down and it’s been that way for decades,” said Mark Squillace, a water law expert at the University of Colorado Law School.

    Denver Water’s collection system via the USACE EIS

    Decoupled demand

    The phenomenon of increasing populations with declining water use is known as “decoupling,” and it has been happening in nearly every part of Colorado since the 1990s.

    Higher efficiency appliances, utility-driven conservation programs and greater citizen awareness of water shortages have all driven the change.

    But water managers say the state’s growing urban areas are reaching the point of “demand hardening,” where the additional water that can be conserved will not outweigh the amount needed in the future.

    “We have been hearing those kind of stories for a long time and it never happens,” Squillace said. “There are a lot of things that we could still do on the conservation end that would be a lot cheaper [than new infrastructure] and a lot more consistent with the environment that we live in.”

    While they differ, the pair of lawsuits being spearheaded by Save the Colorado could both hinge on demand and conservation estimates, and the assumption that additional conservation won’t be sufficient in the future.

    Both lawsuits were filed in federal district court and are now awaiting action by a judge to move forward.

    The Windy Gap Firming case was filed in October of 2017 against the U.S. Bureau of Reclamation and the U.S. Army Corps of Engineers.

    The Moffat Collection System case was filed in December against the Army Corps, the U.S. Interior Department and the U.S. Fish and Wildlife Service.

    An aerial view of Windy Gap Reservoir, near Granby. The reservoir is on the main stem of the Colorado River, below where the Fraser River flows into the Colorado. Water from Windy Gap is pumped up to Lake Granby and Grand Lake, and then sent to the northern Front Range through the Adams Tunnel.

    The projects

    Both the Windy Gap and Moffat projects were conceived decades ago to address projected water shortages on Colorado’s Front Range and to add resilience to both Northern and Denver Water’s supplies.

    Now estimated to cost about $600 million, the Windy Gap project will include a new 90,000 acre-foot reservoir in western Larimer county called Chimney Hollow Reservoir.

    The reservoir is designed to store water from the Colorado and Fraser rivers transported from the Western Slope through the existing infrastructure of the Colorado-Big Thompson project.

    Windy Gap Reservoir, built in 1985, is created by a low river-wide dam across the main stem of the Colorado River, just downstream from where the Fraser River flows in.

    The reservoir is relatively small, holding 445-acre feet, but it’s well situated to gather water from the Fraser, pump it up to Lake Granby and Grand Lake, and then send it through the Adams Tunnel under the Continental Divide.

    With the Moffat project, Denver Water plans to spend an estimated $464 million in order to expand Gross Reservoir in Boulder County, by raising the height of the dam by 131 feet, in order to store an additional 77,000 acre-feet of water.

    Gross Reservoir is a part of the utility’s existing northern collection system and is filled with water from the headwaters of the Fraser and Williams Fork river basins. The water is moved through a pipeline in the Moffat Tunnel, which runs east through the mountains from the base of the Winter Park ski area.

    The upper South Platte River, above the confluence with the North Fork of the South Platte. Photo: Brent Gardner-Smith/Aspen Journalism

    The fork not taken

    The plans to expand Gross Reservoir started in 1990 after the EPA rejected Denver Water’s plan to build Two Forks Reservoir on the South Platte River.

    The EPA’s rejection of Two Forks signaled the end of an era of large dams and forced groups planning large water infrastructure projects to give more consideration to the environmental impacts of their plans.

    Following this rebuke, Denver Water turned to the environmental groups that had opposed their project and solicited advice.

    Throughout the 1990s, the utility implemented water conservation and recycling programs and started making plans to expand an existing reservoir instead of building a new dam.

    “We embarked on the path that the environmental groups suggested. We implemented a conservation program and reduced our demands,” said Jim Lochhead, the CEO and manager of Denver Water. “But you can’t get to zero. We continue to be committed to conservation, but at the end of the day we still need more water.”

    In partnership with environmental groups like Western Resource Advocates and Trout Unlimited, Denver Water has agreed to spend $20 million on environmental improvements in watersheds on the Western Slope as part of the Gross Reservoir expansion.

    Denver Water has also agreed to a monitoring program that will require them to mitigate any unforeseen environmental problems caused by the project, a compromise between environmental groups and the largest water utility in the state.

    “In some sense this project was the development of an alternative from a number of groups,” said Bart Miller, the director of the Healthy Rivers Program at Western Resource Advocates. “In some respect you are putting this in context next to what could happen or could have happened.”

    Concerned with having their own projects fail, as Two Forks did, other water managers emulated Denver Water’s strategy.

    When Northern Water started planning for the Windy Gap Firming project it also reached out to environmental groups, and ended up committing $23 million to mitigate problems caused by past projects and to make other improvements in the upper Colorado River watershed.

    Even though there will be impacts from taking more water from the river, Northern Water says that these “environmental enhancements” will leave the river better off than it would be without the project.

    And environmental groups working on the project agree.

    “There is a lot of damage on the river that will continue to go on without an intervention,” said Mely Whiting, legal counsel for Trout Unlimited. “This is probably the best shot.”

    Gross Reservoir in the mountains to the southwest of Boulder. Denver Water hopes to increase the height of the dam 131 feet, to a new height of 471 feet, to store three times as much water, which it says will help it meet increasing demands and to better weather severe droughts.

    The lawsuits

    While some environmental groups have seen compromise as the best step forward, Save the Colorado and the other plaintiffs in the two lawsuits take a harder stance.

    Save the Colorado, in particular, is against any new dams or diversions.

    “The river has already been drained enough,” Wockner said. “The mitigation, in our mind, is not consequential.”

    Colorado and the six other states that use Colorado River water are now negotiating a plan to better manage Lake Powell and Lake Mead in response to drought and acidification.

    Last week, an engineer from Northern Water told the city council of Loveland that it may have to take a ten percent cut in the water it draws from the headwaters of the Colorado River, sending the water instead to Lake Powell, where water is held before being moved through the Grand Canyon and into Lake Mead for use in California, Arizona and Nevada.

    And Northern’s statement did not go unnoticed by the plaintiffs in the Windy Gap and Moffat lawsuits.

    “The old guard in water have the default setting that we need to build more reservoirs and we need to find more ways to bring water from the western slope,” said Kevin Lynch, the lawyer representing the environmental groups in the Windy Gap Firming case. “The argument my clients are hoping to make with this case is that that may have made sense in the past but it doesn’t now. We are definitely trying to buck the status quo and change the historical way of doing things.”

    Lynch and his team are arguing that the Bureau of Reclamation and the Army Corp of Engineers — the two government agencies being sued in the Windy Gap Firming case — failed to update and independently verify the water demand data used to justify the project.

    To back up this allegation, the plaintiffs petitioned the court to include a statistics report in the administrative record.

    The report, which looks at water use statistics in communities with stakes in Windy Gap Firming water, showed that their demand projections made back when the agencies conducted their environmental assessments were between 9 and 97 percent higher than the actual water use rates in those areas.

    The lawyers in the Moffat Project lawsuit also found that Denver Water used old data from 2002 to project their demands future demands.

    The complaint filed by the plaintiffs says that the Army Corps and the Department of the Interior — which are the two agencies being sued in the Moffat case along with the Fish and Wildlife Service — ignored more recent data that was available when they conducted their assessments.

    “If they were to use today’s data they would no way be able to justify that they need the water,” said Bill Eubanks, the lawyer for the plaintiffs in the Moffat Project case. “Here we are talking about almost two decades. Two decades where we have seen the most transformative uses of water in a century.”

    Both legal teams say that even if the data did reveal a demand for more water, the agencies failed to analyze the alternatives to two large infrastructure projects, including conservation.

    Specifically, Wockner and Eubanks both spoke about how a “cash for grass” program — where the government pays people to dry up their lawns — was never analyzed as an alternative. Looking at similar programs in California, they say the same amount of water could be saved, but for less money than either of the two infrastructure projects.

    To this claim both Northern Water and Denver Water say that additional conservation measures are already planned for the future, but that they are not enough.

    “The state has done a lot of studies for need for water on the Front Range,” said Jeff Drager, Northern Water’s director of engineering and the project manager for the WIndy Gap firming project. “We agree that there can be more conservation, but it won’t be enough to meet our participants needs.”

    The pipeline, at the base of the Winter Park ski area, that moves water as part of the existing Moffat Collection System Project. The portal of the railroad tunnel is behind the pipeline, in this view. Photo credit: Brent Gardner-Smith/Aspen Journalism

    Looking forward

    Due to a long backlog in the court, both lawsuits are unlikely to see their day in court any time soon. According to both lawyers, it could be months or years until the cases are decided. The court’s slow pace could impact the construction of both projects.

    Citing the lawsuit, Northern Water delayed bonds to build the project back in August.

    Executives at Northern say they are using the time to hammer out the last of the details of the project’s design, but that if the project is delayed it may cause costs to rise or endanger the water supplies of the project’s participants.

    Denver Water is still waiting on several permits before they can begin planning construction and is less concerned about a delay. Both Lochhead and Wind say they believe that the projects will go forward once the lawsuits are resolved.

    “We feel confident that our permitting processes are on solid ground,” Wind said. “I don’t think there is anyone in this organization at all that has thought this lawsuit would be effective.”

    While both Northern Water and Denver Water are confident that their projects will move forward, the plaintiffs in the cases are hoping for an upset that could topple the entire water system in Colorado.

    “If we win this case, using this particularly egregious example of inaccurate water demand projections, we think we can set a precedent that would force the state to look at more recent data for different types of projects,” Eubanks said.

    Boulder County commissioners set March 14 public hearing on Gross Reservoir expansion appeal

    The dam that forms Gross Reservoir, located in the mountains west of Boulder. Photo: Brent Gardner-Smith/Aspen Journalism

    From The Boulder Daily Camera (Amy Bounds):

    Community members wanting to comment next month at a Boulder County commissioners hearing on whether Denver Water can move forward with an expansion of Gross Reservoir can start signing up next week…

    Online sign-ups for the March 14 hearing start Feb. 14, while in-person sign-ups will start an hour before the hearing.

    Commissioners plan to continue to take public testimony until all speakers have had an opportunity to comment, according to a news release.

    After the public hearing, commissioners will hear Denver Water’s appeal of a decision by the county’s Land Use Department that Denver Water must run the project through what is known as a “1041” review process before construction can begin.

    Named for the bill number by which it was enacted in 1974, the 1041 legislation gives local governments the right to control development by agencies beyond their boundaries through a local permitting process.

    Denver Water argues the Gross Reservoir expansion is exempt from 1041 requirements. Boulder County claims it is not.

    The public hearing will focus on the limited scope of the determination and is not a hearing or decision on the perceived impacts or merits of the reservoir expansion project, according to a news release…

    Written comments can be submitted through an online comment form available at bit.ly/GrossDamExpansion. Comments also can be mailed to the Boulder County Commissioners’ Office, P.O. Box 471, Boulder, 80306. Comments need to be received by noon March 12.

    Moffat Collection System Project update: “I think their position is pretty clear” — Jim Lochhead #ColoradoRiver #COriver #aridification

    Denver Water is seeking approvals from the U.S. Army Corps of Engineers, the U.S. Fish and Wildlife Service, and the state of Colorado to expand Gross Reservoir, which is southwest of Boulder. The 77,000 acre-foot expansion would help forestall shortages in Denver Water’s water system and offer flood and drought protection, according to Denver Water.

    From The Sky-Hi News (Lance Maggart):

    On Wednesday a collection of six environmental advocacy groups – Save the Colorado, the Environmental Group, Wildearth Guardians, Living Rivers, Waterkeeper Alliance Inc. and the Sierra Club – filed a lawsuit in Colorado’s federal district court against the proposed Gross Reservoir Expansion Project, alternately called the Moffat Firming Project…

    The legal process surrounding Gross Reservoir has deep significance to Grand County. The county serves as the source for much of the water Denver Water relies upon, which is transported out of the county through the Moffat Tunnel near Winter Park Resort. The county is also party to a collaborative water management group called Learning By Doing. The group looks to improve river habitat in Grand County by conducting environmental water projects and through other means.

    The lawsuit filed by the environmental groups does not name Denver Water and instead is directed at the US Army Corps of Engineers, the Department of the Interior and the US Fish and Wildlife Service. The 57-page complaint lays out 32 separate specific claims related to alleged violations of the National Environmental Policy Act, the Clean Water Act and the Endangered Species Act.

    The alleged violations claimed by the environmental groups cover a wide range of technical issues related to the formal processes by which large construction projects, such as the Gross Reservoir Expansions, are approved by federal agencies. Many of the claims made by the environmental groups revolve around allegations that the Corps of Engineers, Interior Dept. and US Fish and Wildlife failed to exercise independent judgment related to claims made by Denver Water about the project.

    “Denver Water’s proposal to build the largest dam in Colorado history will hurt the 40 million people in six states and two countries who depend on the Colorado River – a critical but disappearing, resource – for their water supply,” said Daniel E. Estrin, general counsel and advocacy director at Waterkeeper Alliance. “Waterkeeper Alliance stands united with our many Colorado River Basin Waterkeepers who are fighting to protect their waterways and their communities from this senseless and destructive water grab.”

    For their part officials from Denver Water said the court filing did not surprise them.

    “We expected it,” Jim Lochhead, CEO of Denver Water, said. “This is a really critical project for Denver Water. In the last 15 years we have come close to running out of water a couple of time at the north end of the system.”

    Lochhead noted that those two incidents came in 2002 and 2013.

    While Denver Water is not directly named in the lawsuit Lochhead said the organization will be entering the lawsuit to “provide our own perspective on the adequacy of the approvals.”

    “We are confident the federal agencies follow regulations and federal law,” Lochhead said. “I think a court will uphold the findings by those agencies.”

    When asked whether he believed Denver Water and the environmental groups who oppose the Gross Reservoir Expansion Project could reach some form of compromise agreement Lochhead answered, saying, “I think their position is pretty clear.”

    Moffat Collection System Project update: Environmental groups file lawsuit

    The dam that forms Gross Reservoir. Photo: Brent Gardner-Smith/Aspen Journalism

    From Colorado Public Radio (Grace Hood):

    A suit filed against three U.S. government agencies seeks to stop the expansion of Denver Water’s Gross Reservoir in Boulder County…

    Gross Reservoir provides water to 1.4 million Front Range customers. The expansion would divert more water from Colorado River headwater tributaries during wet years. In a nutshell, the project seeks to raise the height of the existing dam by 131 feet; storage capacity would increase by 77,000 acre feet.

    The environmental groups who sued say the U.S. government permitting process inadequately evaluated the impact of the large project on streamflows. There are also concerns about how construction would affect wildlife.

    “We went above and beyond mitigation of environmental impacts under the permits,” Denver Water CEO Jim Lochhead said. “We sat down with Grand County, Eagle County… and a host of agencies across Western Colorado, and developed a series of environmental enhancements to the streams of Western Colorado.”

    Trout Unlimited is one such group that has supported the Gross Reservoir expansion, citing successful stream augmentation programs along the Fraser River…

    Revving up the legal gears could pose a setback for Denver Water, which has spent years securing the necessary permits. Now that it has those in place, environmental groups are seeking to stop construction.

    Denver Water’s collection system via the USACE EIS

    New @DenverWater rates start Feb. 1

    Northwater Treatment Plant — Denver Water is upgrading and modernizing the northern portion of its water system that was built in the 1930s. The utility is building a new water treatment plant, as seen in this rendering, installing a new pipeline, and redeveloping its Moffat Treatment Plant site. Photo credit: Denver Water

    Here’s the release from Denver Water (Travis Thompson):

    At its meeting today, the Denver Board of Water Commissioners adopted rate changes to fund essential upgrades and new projects to keep Denver Water’s system running smoothly. The new rates take effect Feb. 1, 2019, and monthly bills for most Denver residents will increase by 55 cents if they use water the same as they did in 2018.

    “While the cost to maintain and upgrade the water system continues to increase, rapid development inside the city of Denver has brought in more fees from new taps sold, helping to minimize the 2019 rate increase for Denver customers,” said Jim Lochhead, Denver Water CEO/Manager. “The surrounding suburbs, however, had less development than in the past, reducing the amount collected from new tap fees, which means we’ll need to collect more revenue from suburban water rates in 2019.”

    Suburban customers who receive water from one of Denver Water’s 65 distributors will see an additional monthly increase added to their volumetric charges. The Denver City Charter requires that suburban customers pay the full cost of service, plus an additional amount. Learn more about how this works: “Why Denver water costs more in the ‘burbs.”

    If you live outside Denver and receive water from a distributor under contract with Denver Water, you can expect to see an annual increase between $23 and $41, which is between $1.90 and 3.40 a month (based on an annual use of 102,000 gallons of water).

    Pat Fitzgerald, general manager of four Denver Water distributors including the Platte Canyon Water and Sanitation District and chairman of the suburban districts’ Technical Advisory Committee, which reviews Denver Water’s rates annually, provided this statement:

    “The advisory committee supports the rate increase. The cost-of-service study used to determine the difference between inside city and outside city customers is fair and reasonable, and the committee had no objections to the results. The expenses are going up, but they’re all projects that are necessary to provide a reliable and safe source of water.”

    The major multiyear projects that water rates fund include building a new, state-of-the-art water treatment plant, installing a new 8.5-mile water pipeline to replace a pipeline that was built in the 1930s, expanding Gross Reservoir to provide a more reliable future water supply, constructing a new water quality lab to ensure the highest water quality standards, investing more than $100 million to repair and replace water pipes, and more. There are 158 major projects identified in Denver Water’s five-year, $1.3 billion capital plan.

    A customer’s bill is comprised of a fixed charge, which helps ensure Denver Water has more stable revenue to continue the necessary water system upgrades to ensure reliable water service, and a volume rate. The fixed monthly charge — which is tied to meter size — in 2019 is increasing by 55 cents for most residential customers both inside the city and out.

    Denver Water’s rate structure includes a three-tiered charge for water use (called the volume rate). To keep water affordable, indoor water use — like for bathing, cooking and flushing toilets — is charged at the lowest rate. Essential indoor water use is determined by averaging the customer’s monthly water use on bills dated from January through March each year. This is called average winter consumption. Water use above the average winter consumption — typically for outdoor watering — is charged at a higher price.

    Volume rates for Denver residents will remain the same, but will increase on suburban bills.

    Denver Water operates and maintains more than 3,000 miles of pipe — enough to stretch from Los Angeles to New York — as well as 20 dams, 22 pump stations, 30 underground storage tanks, four treatment plants and more. The water provider’s collection system covers more than 4,000 square miles, and it operates facilities in 12 counties in Colorado.

    Denver Water does not make a profit or receive tax dollars, and reinvests ratepayers’ money to maintain and upgrade the water system. The utility is funded by water rates, bond sales, cash reserves, hydropower sales and fees for new service (called System Development Charges).

    Customers will see more information about 2019 rates in their bills and on Denver Water’s website over the next few months.

    Gross Reservoir — The Gross Reservoir Expansion Project will raise the height of the existing dam by 131 feet, which will allow the capacity of the reservoir, pictured, to increase by 77,000 acre-feet. The additional water storage will help prevent future shortfalls during droughts and helps offset an imbalance in Denver Water’s collection system. With this project, Denver Water will provide water to current and future customers while providing environmental benefits to Colorado’s rivers and streams. Photo credit: Denver Water

    Ongoing #SouthPlatte Basin water storage projects

    From The Sterling Journal-Advocate:

    There already are six projects being pursued in the South Platte Basin to extend the water supply. These are not included in the recent South Platte Storage Survey, but have been considered and under way for some time:

    Northern Integrated Supply Project (NISP) map July 27, 2016 via Northern Water.

    • The NISP/Glade project — The Northern Integrated Supply Project is a proposed water storage and distribution project that will supply 15 Northern Front Range water partners with 40,000 acre-feet of new, reliable water supplies.

    Map from Northern Water via the Fort Collins Coloradan.

    • Chimney Hollow Reservoir — A 360-foot high dam that will hold 90,000 acre feet to help supply the thirsty Thompson Valley urban area. The water will come from the Windy Gap Project, a diversion dam and pumping station completed in 1985 to provide extra irrigation and municipal water out of the Colorado River. The water originally was stored in Grand Lake, but when that is full, the water cannot be stored. Chimney Hollow, also known as the Windy Gap Firming Project, solves that problem.

    Reservoirs NW of Fort Collins

    • Halligan reservoir enlargements — Halligan Reservoir near Fort Collins is about 100 years old. Its capacity is about 6,400 acre feet of water and the City of Fort Collins wants to add 8,125 acre feet to the reservoir by raising its dam about 25 feet.

    • Milton Seaman Reservoir enlargement — Greeley originally had wanted to expand Seaman Reservoir in conjunction with Halligan, but because of diverging goals Greeley withdrew from the joint project. The expansion of Seamon now is targeted for design in 2028 and construction by 2030.

    Gross Dam enlargement concept graphic via Denver Water

    • Gross Reservoir enlargement — Gross Reservoir is one of 11 reservoirs supplying water to the City of Denver and surrounding urban areas. It is on the city’s Moffat System, which diverts water from the Western Slope to the metro area. Denver Water has proposed raising the dam height by 131 feet, which will allow the capacity of the reservoir to increase by 77,000 acre feet.

    Proposed reallocation pool — Graphic/USACE

    • Chatfield Reallocation Plan — The U.S. Army Corps of Engineers has determined that Chatfield Reservoir, built primarily for flood control after the 1965 South Platte River flood, can accommodate an additional 20,600 acre feet of water storage for water supply without compromising its flood control function. This additional storage space will be used by municipal and agricultural water providers to help meet the diverse needs of the state. No actual construction is required, but the legal, environmental, and engineering concerns of allowing the reservoir to hold more water all have to be satisfied.

    “…why I support Denver Water’s Gross Reservoir Expansion project” — Lurline Underbrink Curran

    Gross Dam enlargement concept graphic via Denver Water

    From The Boulder Daily Camera (Lurline Underbrink Curran):

    I would like to share why I support Denver Water’s Gross Reservoir Expansion project.

    While located in Boulder County, the project obtains the water from Grand County — a county that is currently the most impacted county in the state of Colorado for transbasin diversions. You must wonder why the county and its citizens, stakeholders in the Colorado River Basin, along with Trout Unlimited support this project.

    The reason is the Colorado River Cooperative Agreement, which is an historic agreement with statewide environmental benefits which were fought for and gained through sometimes difficult and long negotiations. It has been hailed as a new paradigm and one that will serve as an example of what can be gained when dealing with a finite resource like water. The signatories to this agreement represent the entire Colorado River Basin, and I had the honor of acting as Grand County’s lead negotiator in this agreement. I worked for Grand County for 33 years, retiring as county manager in 2015. I have lived in Grand County over 60 years and have deep roots and interest in the well-being of our waterways.

    The environmental benefits gained by Grand County, which include additional flows, river ecosystem improvements, use of Denver Water’s system, participation in an adaptive management process called Learning by Doing, money for river improvements, just to name a few, are necessary to protect and enhance the Fraser and Colorado rivers. Without these benefits, these rivers will continue to degrade, with no hope of recovery or improvement.

    Those who oppose the project offer no solutions to the already stressed aquatic environment of the Fraser and Colorado rivers. Through the Learning By Doing format and a public private partnership, partners have already implemented a river project on the Fraser as an example of what can be done. This project immediately produced improvements that were astounding. Colorado Parks and Wildlife can verify this claim. This essential work will not continue without the CRCA.

    The impacts that are associated with the construction of the Gross Reservoir Enlargement are substantial and one sympathizes with those who will experience them, but the reality is they will end. Mitigation for the construction impacts can be applied. However, without the CRCA, the impacts to the Fraser and Colorado rivers will continue with no hope of improvement.

    The environmental enhancements and mitigation that are part of the CRCA cannot be replicated without the reservoir expansion project, and the loss of these enhancements and mitigation will doom the Fraser and Colorado rivers in Grand County to environmental catastrophe.

    Boulder County asks FERC to deny @DenverWater’s Gross Dam hydroelectric permit amendment for the Moffat Collection System Project

    The dam that forms Gross Reservoir, located in the mountains west of Boulder. Photo: Brent Gardner-Smith/Aspen Journalism

    From Boulder Daily Camera (Charlie Brennan):

    Citing the success of Denver Water’s conservation efforts since it first issued its “purpose and need” statement for the project, and the fact that no service shortfall has yet materialized for its 1.4 million customers in the metro area, Boulder County Attorney Ben Pearlman said that based on prior environmental reviews, “Boulder County does not believe Denver Water has shown that the project’s purpose and need have been met and the FERC must deny Denver Water’s application to amend its permit.”

    […]

    “We don’t think they have undertaken the duty they have (under federal environmental law) to analyze this problem thoroughly,” [Conrad] Lattes said…

    Denver Water officials on Friday answered back by reasserting the project’s merits.

    “The Gross Reservoir Expansion project represents an enormous amount of work, input and collaboration to ensure it is done in the most responsible way possible,” Jim Lochhead, Denver Water CEO/manager said in a statement. “And Denver Water will continue to develop noise, transportation and tree removal plans with input from stakeholders to minimize the impacts to Boulder County and its residents.”