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.

#Snowpack/#Runoff news: @Northern_Water declares a 70% quota for the 2019 season #ColoradoRiver #COriver

Lake Granby spill June 2011 via USBR. Granby Dam was retrofitted with a hydroelectric component and began producing electricity earlier this year as water is released in the Colorado River.

From The Loveland Reporter-Herald (Sam Lounsberry):

Unit owners of the Colorado-Big Thompson project, which delivers Colorado River water from the wet Western Slope to the dryer Front Range, will get 70% of their quota this year, according to a Northern Water news release.

The 70% allocation means that a farmer who owns 10 acre-feet of Colorado-Big Thompson water will get seven in a year, with the remaining three kept in storage for use in dry years…

In wet years like this one, Northern sometimes downsizes the quota of Colorado-Big Thompson water distributed, since native streams can be full enough to provide farmers late-season growing supply, which provides Northern a storage opportunity for use in dry years.

But the move to boost the Colorado-Big Thompson quota from 50% — the level normally set at the start of Northern’s water year in November just to get users through the winter so snowfall can inform spring allocation rates — ensures farmers will have a more flexible late growing season.

The quota increases available Colorado-Big Thompson water supplies by 62,000 acre-feet from the initial 50% quota made available in November…

The snow-water equivalent mark for the Upper Colorado Basin is 120% of the normal median as of Thursday, according to the U.S. Bureau of Reclamation, with snowpack levels in other river basins across the southwest at even higher marks. But KUNC and The Aspen Times reported this year that despite the good snowfall this winter, officials predict spring runoff won’t be enough to replenish reservoirs across the southwest, because years of drought have left dry soil that sucks up extra drops.

“Modeled soil moisture conditions as of November 15th were below average over most of the Upper Colorado River Basin and Great Basin,” the Colorado Basin River Forecast Center stated in its April 1 report. “In the Upper Colorado River Mainstem River Basin, soil moisture conditions were below average in headwater basins along the Continental Divide, and closer to average downstream.”

Water from the Colorado-Big Thompson project supplements other sources for 33 cities and towns, 120 agricultural irrigation companies, various industries and other water users within Northern Water’s 1.6 million-acre service area, across parts of eight counties, the Northern release said.

Westwide SNOTEL basin-filled map April 11, 2019 via the NRCS.

@Northern_Water: “Water Secure” and #NISP

From Northern Water:

A key element of NISP, the “Water Secure” program represents a shift away from “buy-and-dry” and is instead an outside-the-box approach to meeting the future water needs of Northern Colorado’s growing communities while also preserving our vital ag industry and environment.

From The Fort Collins Coloradoan (Jacy Marmaduke):

Northern Water will have to buy “dozens and dozens” of Larimer and Weld county farms to lock down enough Poudre River water to fill a proposed reservoir for the planned Northern Integrated Supply Project.

The unprecedented approach could substantially raise the price of NISP, a $1.2 billion storage and delivery project funded by the 15 Northern Colorado municipalities and water districts that will use the water. Northern Water leaders say the approach will also prevent the dry-up of thousands of acres of farmland in Larimer and Weld counties because the agency won’t strip the properties of water.

Instead of taking the buy-and-dry route of diverting a purchased property’s water rights to a new use, Northern Water plans to trade its South Platte River water rights for the farms’ Poudre River water rights. That means Northern Water will divert water from the Poudre River to store in the proposed Glade Reservoir and give the farmers a slightly larger portion of South Platte water from the proposed Galeton Reservoir.

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

Northern Water’s newly minted Water Secure program addresses a giant question mark that has lingered on the NISP road map for more than 15 years: The agency only has about half of the Poudre River water it needs for NISP. But it does have a lot of water from the South Platte River, which is less-suited for drinking than Poudre water and more expensive to treat.

This problem has never been a secret, but until now, Northern Water’s public plans included the assumption that farmers would willingly trade their water with the agency for free.

Those voluntary exchanges aren’t off the table, but Northern Water now plans to secure much of the water it needs by buying farms in two irrigation ditch systems — the New Cache la Poudre Irrigating Co. and the Larimer and Weld Irrigation Co. Once Northern Water owns those farms and their water, the agency will essentially be trading water with itself.

“We’ve just become the most willing shareholder on the ditch,” said Greg Dewey, a Northern Water water resources engineer and Water Secure project manager.

How we got here

Shares of Poudre River water in the New Cache la Poudre and Larimer and Weld ditches are coveted because they’re senior water rights, which means their owners have first dibs for usage. That becomes important during dry years when there isn’t enough water for everyone who’s claimed a slice of an overallocated pie.

Senior water shares are crucial for NISP because Northern Water’s current Poudre River supply (known as the Grey Mountain right) is a junior water right that will only be useful during wet years.

Dewey called Water Secure’s approach a “risk management strategy” born during negotiations with the two ditch companies. He said it became clear that the farms Northern Water was eyeing for trades are vulnerable to buy-and-dry, a controversial practice that has fed Colorado population growth at the expense of irrigated farmland.

“If that happens over the long-term, that jeopardizes our ability to exchange water with those systems,” Dewey said. “So this is a way to help preserve that exchange and also (address) a common interest we have with those companies to keep water in the system.”

Northern Water unveiled the Water Secure program in February after closing a deal on its first farm, a 28-acre property northeast of Greeley. The farm cost $330,000 and came with 30 acre-feet of Poudre River water. Northern Water will need to buy “dozens and dozens” of farms to secure about 25,000 acre-feet’s worth of water exchanges for NISP, spokesman Brian Werner said. An acre-foot of water meets the annual needs of about three or four urban households…

[Brian] Werner said staff is still evaluating how Water Secure will affect the price of NISP. He said the cost impact will depend on the ratio of farm purchases to willful water exchanges — and how much money Northern Water makes when it eventually sells the farms back to farmers.

Northern Water plans to pursue legal contracts that permanently bind the water to the farmland regardless of its owner, which would shield the farms from buy-and-dry and protect the agency’s water exchange agreements. The water provider plans to lease the land to the original owner or another farmer until selling it to another entity that would be required to keep the South Platte River water on the property.

“If we buy a farm and establish that water agreement, then we’ll be looking to sell it back into private hands,” Northern Water spokesman Jeff Stahla said. “Our goal is not to be the major landowner up there.”

[…]

The legal agreements, likely conservation easements or covenants, would be the first of their kind in the region if not the state. Boulder County leaders have found success with a similar approach for preserving open space, Werner said.

He argued more federal review is unnecessary because Northern Water has included the water exchanges in its NISP planning documents since at least 2004. Northern Water’s water court decree for the South Platte River water allows the trades.

Dewey, a Kersey native and former farmer, is Northern Water’s “boots on the ground” for the program, Werner said. Dewey said Water Secure is getting positive feedback from farmers who’ve watched irrigated agriculture dwindle in Larimer and Weld counties.

Loveland: @Northern_Water Spring Water Users Meeting Tuesday, April 9, 2019

Click here to read the agenda.

Map of the Colorado-Big Thompson Project via Northern Water

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.

@Northern_Water: Farm purchase part of #NISP effort to ensure water-secure future for local communities and agriculture

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

Here’s the release from Northern Water (Brian Werner):

The recent purchase of a Weld County farm marks a new venture for Northern Water and Northern Integrated Supply Project participants – one that’s part of the ongoing, collaborative effort to secure future water supplies for both the region’s communities and our vital agricultural industry.
On Jan. 31, Northern Water and the NISP participants purchased a 28-acre farm northeast of Greeley and the property’s water rights. The farm was purchased through the NISP Water Secure program, a cooperative effort to maintain the exchange of water for NISP while keeping water on participating farms. This investment is a shift from the “buy-and-dry” approach that has stressed our agricultural communities.

This innovative program will eventually provide supplemental water to approximately 500,000 residents in northern Colorado while preserving thousands of acres of irrigated farmland. Water Secure is part of a strategic long-term plan to better plan for future growth and to consistently apply Colorado Water Plan principles to protect water for our communities, farms and the environment. Without innovative approaches such as Water Secure, the region is on pace to see hundreds of thousands of irrigated acres dried up by mid-century.

“This is an outside-the-box, ‘buy-and-supply’ approach we’re taking to address the tightening water supplies facing Northern Colorado and its future generations,” said Northern Water General Manager Brad Wind.

The recently purchased farm sits within an area of Weld County that is key to NISP – a project that, once built, will include Glade Reservoir near Fort Collins and Galeton Reservoir near Ault, and deliver approximately 40,000 acre-feet of water annually to 15 local communities and water districts.

As part of the project, Northern Water and the NISP participants are working with the New Cache la Poudre Irrigating Company and Larimer and Weld Irrigation Company ditch and reservoir systems in Weld County, to use a portion of their senior water rights in exchanges that will ensure the NISP participants receive the water from the project.

These exchanges with the two systems will keep water flowing to those farms, as well as include compensation that will enhance the long-term viability of their operations.

To avoid water leaving those farms permanently through buy and dry purchases from other entities, Northern Water will buy land and water from willing sellers to ensure those supplies remain in the two ditch systems and available for exchange.

The senior water rights in the New Cache and Larimer-Weld systems are currently among the most sought after by water providers looking to obtain future supplies.
Farms in the New Cache and Larimer-Weld systems bought by Northern Water will remain in production, through limited land use easements on the property, lease-back agreements or other arrangements that will require continued irrigation on those farms.

Furthermore, the purchase of any irrigated lands will be done with the goal of eventually returning them to private ownership.

“The Water Secure program maintains irrigated agriculture and provides open space benefits while eliminating many of the long-term challenges with the practice of buying and drying,” Wind added.

To learn more about NISP, go to http://www.gladereservoir.org.

From The Greeley Tribune (Sara Knuth):

As part of the newly implemented Water Secure program, Northern Water purchased the 28-acre farm northeast of Greeley on Jan. 31 with communities that participate in the Northern Integrated Supply Project, which will result in two reservoirs and more water for 15 communities…

Instead of municipalities buying up water rights on farmland and leaving them to dry out, the district is looking at the initiative as a way to both preserve irrigated farmland and provide supplemental water to an estimated 500,000 northern Colorado residents.

During a phone interview Thursday, Northern Water spokesman Brian Werner said it’s critical to make sure water is delivered annually to farms.

“It’s what makes this project work,” he said. “Keeping water on farms, as opposed to the good old way it’s been done in the past in this state. The American West, you bought land and you dried it up. We’re buying it and we’re calling it ‘buy and supply’ rather than buy and dry. So we need to keep the water on the property.”

This is how the program will work:

Northern Water and the NISP participants, which include Evans and Windsor, will work with the New Cache la Poudre Irrigating Company and the Larimer and Weld Irrigation Company ditch and reservoir systems in Weld County to use a portion of their senior water rights to make sure the NISP communities get water from the project.

In turn, the exchanges with the two systems will ensure water keeps flowing to participating farms and include compensation. Farms in both systems purchased by Northern Water will remain in production through arrangements such as limited land use easements and lease-back agreements.

“To avoid water leaving those farms permanently through buy and dry purchases from other entities, Northern Water will buy land and water from willing sellers to ensure those supplies remain in the two ditch systems and available for exchange,” according to the news release.

For the district, getting rights from both systems is significant — senior water rights in New Cache and Larimer-Weld systems are among the most sought after by water providers who are looking for supplies.

Werner said the company isn’t sure yet how much the district will invest in the program but said it will likely take millions of dollars.

Still, Northern officials emphasized that the purchase of any irrigated land will happen with an end goal in sight: return the farms to private ownership again eventually.

Windsor town board OKs rate hike

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

From The Greeley Tribune (Sara Knuth):

The Windsor Town Board voted unanimously Monday to approve the second water rate increase of the year for residents as officials look to strengthen their plans to add more water supplies.

The increase will bring rates up by an additional 6.21 percent, a hike that will appear on water bills April 1. In December, the board approved an annual increase of 3.29 percent that will be reflected on the March bill.

For water users, the increase means average single-family monthly consumption charges will be about $38.37. In 2018, bills were $35.06 per month on average.

During Monday’s meeting, town board said they didn’t come to the decision to raise the rates easily.

When one resident expressed concerned about how the rate increase might impact residents, Mayor Kristie Melendez said town officials came to the decision over several meetings…

The town, which currently owns shares in the North Poudre Irrigation Company and the Colorado-Big Thompson Project, is seeking to strengthen its participation in the Northern Integrated Supply Project, a massive project that will result in two new reservoirs and serve 11 communities and four water districts along the Front Range…

As it stands now, Windsor owns 4,100 acre-feet of water. But it’s going to need another 15,800 acre-feet in the future to keep up with demand, officials said…

In the town’s agreement with Northern Water, which manages the supply project, the town is scheduled to pay $100 million to the project by 2026, Town Manager Shane Hale said. The town won’t have enough money on its own to pay for that, he said, so officials will need a base of between $30 million and $33 million to issue debt to help pay for the cost in the future.

Of the total cost Windsor will pay toward NISP, 12 percent will come from water users who will pay the rate approved Monday. The other 88 percent comes from town development fees.

But Hale said town officials didn’t want to place the burden solely on developers and discourage them from coming to Windsor.

Windsor has worked with consulting firms since 2009 to work on ways to secure water. Most recently, officials worked with Stantec Consulting to develop a plan to pay for Windsor’s place in the water supply project and operations, including collecting, cleaning, filtering, disinfecting and testing water.

From The Fort Collins Coloradoan (Jacy Marmaduke):

Windsor’s residential water rates will increase by 6.21 percent to help fund the town’s involvement in the Northern Integrated Supply Project…

The rate increase, paired with another increase that took effect Jan. 1, will raise the average single-family residential water bill from $35.06 a month in 2018 to $38.37 a month in 2019.

Windsor is one of 15 municipalities and water districts that will receive water from the Northern Integrated Supply Project, or NISP, a proposal to build two new reservoirs and fill them with Poudre River water. Participants are funding the costs of the project, and Windsor’s involvement will cost over $100 million, according to Mayor Kristie Melendez…

The town is looking to ratepayers to fund about 12 percent of the project cost. The other 88 percent will come from a water resource fee leveled on each new home in Windsor, an approach that Melendez called “growth pays for growth.”

[…]

NISP will supply about 3,300 more acre-feet if it jumps through all regulatory hoops. An acre-foot of water is equivalent to the average annual water use of 2 to 3 urban households.

In all, NISP is expected to provide about 40,000 acre-feet of water to its participants. Windsor’s share of NISP is the third-largest among municipalities involved in the project.

The two proposed NISP reservoirs include Glade Reservoir, which would be located near Ted’s Place north of Fort Collins, and Galeton Reservoir, which would be located northeast of Greeley.

For comparison’s sake, Glade Reservoir’s capacity of 170,000 acre-feet is about 108 percent of the capacity of Horsetooth Reservoir. Galeton would hold about 46,000 acre-feet.

The Army Corps of Engineers is expected to issue a record of decision on NISP in 2019. Affirmation from the Army Corps will likely trigger a legal challenge from NISP opponent Save the Poudre. Northern Water expects to begin storage in Glade Reservoir in 2025.