Aspen City Council wades into water shortage scenarios

Scenario A, worst-case:

This scenario is intended to represent assumptions with a combined 1 in 100 probability of occurring.
Climate change is at the worst end of consideration, at 6 weeks peak, 50 percent combined flow and ET impacts. Weighted average demand growth rate is 1.2 percent, resulting in a 2065 treated water demand of approximately 6,320 acre-feet. And flow adjustment factors are at their expected values.

Scenario B, no-growth

Climate change is at the worst end of consideration, at 6 weeks peak, 50 percent combined flow and ET impacts. Demand growth rate is zero; current treated water demand of approximately 3,500 acre-feet continues through 2065. And flow adjustment factors are at their expected values.

Scenario C, intervention

Climate change is at the worst end of consideration, at 6 weeks peak, 50 percent combined flow and ET impacts. Demand growth rate is zero, no outdoor usage during shortages; effective treated water demand during shortages is 2,280 acre-feet. And flow adjustment factors are at their expected values.


ASPEN – Whether Aspen needs to build a reservoir to meet water demands in 2065 may depend in part on whether it wants to keep irrigating its municipal golf course during an apocalyptic drought.

According to a water attorney and an economist working for the city on a risk analysis of future water shortages, Aspen may find itself unable to meet domestic water demands — including both indoor and outdoor water use — anywhere from two out of 25 years in an optimistic scenario to 19 out of 25 years in a worst-case scenario.

The most optimistic scenario can be achieved, in theory, if the city limits outdoor watering by its customers and also stops diverting water from Castle Creek to irrigate the 148-acre municipal golf course and other nearby open space.

Outdoor water use accounts for about 60 percent of current demand for city water.

The members of the Aspen City Council took a sip of such concepts Monday at a work session on the results of a water demand study.

Aspen Mayor Steve Skadron said he expects the council to now spend “several months” grappling with the city’s future water needs as part of an exercise to identify alternatives to maintaining conditional water rights for two large reservoirs on upper Castle and Maroon creeks.

Aspen trees near the site of the proposed Maroon Creek Reservoir. The City Council has acknowledged the pristine nature of the Maroon Creek location and is openly looking for water storage alternatives, including at the city golf course and Cozy Point Ranch.

Climate wildcard

Monday night, George Oamek, an economist with Headwaters Corp., presented three scenarios from a risk analysis he’s been developing for the city.

He told the council that his model is packed with uncertainties, mainly around the severity of climate change, but also around the amount of flow in Castle and Maroon creeks and the future demand from Aspen’s water customers.

“We’ve got just a tremendous amount of variability in the existing information that gets translated into our analysis,” Oamek said.

“There is so much uncertainty,” concurred council member Ann Mullins.

“Climate change is everything,” Oamek said. “And it’s the thing we know the least about.”

Oamek also said his model includes a 1-in-100 chance that the factors will line up to cause havoc, which he said is a common risk assumption for municipal water providers and in floodplain mapping with its concept of a “100-year-flood.”

“Frankly, water planners are risk adverse,” he said.

In Oamek’s “worst-case” scenario, runoff would come six weeks earlier in the spring and there would be half as much water flowing in Castle and Maroon creeks, the city’s primary sources of water.

The city of Aspen’s diversion structure on Castle Creek.

Water rights portfolio

The city owns two large senior diversion rights on Castle Creek tied to the historic Castle Creek-Midland Flume. The city has an 1892 decree allowing it to divert 60 cfs. On top of that, it has another right from 1892 for 100 cfs, giving it the ability to divert 160 cfs from Castle Creek.

The city’s streamwide diversion dam is just downstream of Midnight Mine Road and the water is sent via a pipeline to the city’s water treatment plant on a knoll above Aspen Valley Hospital.

Water from Maroon Creek is also sent via pipeline to the treatment plant and the associated 10 acre-foot Leonard M. Thomas Reservoir, which serves as a forebay to the treatment plant, holding water from both Castle and Maroon creeks.

The city owns a 3.4 cfs diversion right on Maroon Creek with an 1893 decree date and another 65 cfs diversion right with a 1949 decree date that, notably, includes an 1892 appropriation date. The city’s streamwide diversion dam on Maroon Creek is located at the T-Lazy-7 Ranch.

The water rights from Castle and Maroon creeks give the city a portfolio of “paper” rights adding up to 228.4 cfs, which is a much larger amount than the city runs through its water treatment plant, even in dry, high-demand, years.

According to a water availability study from Wilson Water adopted by the city in June 2016 as a planning document, the city in the last big drought year of 2012 brought between 2.38 and 9.4 cfs of water into its water treatment plan from Thomas Reservoir. The peak intake of 9.4 cfs was in June.

The city’s pipeline from the Castle Creek diversion limits the amount of water that can be sent from Castle Creek to the treatment plant to 25 cfs and the pipeline from Maroon Creek can move up to 27 cfs.

The city’s diversion rights are separate from its two conditional water storage rights higher on Castle and Maroon creeks.

Those rights, as currently decreed with a 1971 date, are for storing 4,567 acre-feet of water just below the confluence of East and West Maroon creeks in the Maroon Creek Reservoir, and for storing 9,062 acre-feet of water in the Castle Creek Reservoir two miles below Ashcroft.

The combined storage capacity of the potential reservoirs, as currently decreed, is 13,629 acre-feet. The reservoirs, notably, would be located above the city’s two downstream diversion dams.

And both the city’s diversion rights and its conditional storage rights are separate from rights it owns in three irrigation ditches on Castle Creek, downstream from its diversion dam. The headgates for the three ditches on Castle Creek are near the Marolt housing complex.

The city calculates the instream flow at a location below the headgate of the Marolt Ditch, as it is the lowest of the three ditches.

The city of Aspen's Leonard M. Thomas Reservoir, next to the city's water treatment plan, can hold water from both Castle and Maroon creeks.
The city of Aspen’s Leonard M. Thomas Reservoir, next to the city’s water treatment plant, can hold water from both Castle and Maroon creeks.

Supply down, demand up

In his presentation to the City Council, Oamek said his worst-case scenario assumes that demand for treated water would be 6,320 acre-feet of water a year, up from about 3,500 acre-feet today.

The assumption includes a negligible 0.4 percent growth rate in the permanent population in Aspen’s water service area, and a 2 percent growth rate for the part-time population and commercial sector.

That assumption does seem to run counter to Aspen’s past ability, and plans, to lower water demands while the population rises, which may be why the three scenarios also include a no-growth-in-demand scenario, where demand is held flat at current levels, regardless of potential population growth.

For example, a 2014 water efficiency plan from Element Consulting and WaterDM projects the city will, by 2035, “reduce treated demand by about 583 AF — an overall 14 percent reduction in demand.”

And the city has been making solid progress on reducing water demand. In 2012, city staffers told the council the city had reduced water consumption by “over two-thirds over the last 19 years.”

But the water efficiency plan does raise a cautionary note about the city’s lack of storage.

“On an annual basis, the dry year yield of the City’s water rights appears to be more than sufficient to meet current and forecast future demands,” the plan says. “However, the city does not have storage to regulate the timing of supply to match demands, and therefore is vulnerable to peak demand shortfalls in dry years when physical streamflow conditions are limited, or in emergencies such as a fire or landslide when one or more particular water supply sources may become unavailable.”

A graphic in Aspen's draft water efficiency plan shows that the city has generally been using less water over time.
A graphic in Aspen’s draft water efficiency plan shows that the city has generally been using less water over time.

Setting aside the downward demand trend, the most draconian scenario developed by Oamek assumes a near doubling of demand in a much hotter and drier world.

And it shows the city might not be able to meet all municipal water demands — including both indoor and outdoor use — in 19 of 25 years.

“There are frequent shortages for Aspen’s potable supply during that period,” Oamek said.

In 15 of those years, water shortages could be greater than 100 acre-feet of water.

In four of those years, water shortages could be greater than 1,000 acre-feet.

And in one of those years — think the drought year of 1977 — shortages could be greater than 2,000 acre-feet.

“Over 1,000 acre-feet … that would definitely cause some hardship,” Oamek said. “A lot of these shortages, they are not occurring during the irrigation season, or during the summer where you might be able to reduce outdoor use, or work some deals with the irrigators.

“The shortages are occurring kind of in the shoulder season, occurring in late summer, early fall, and also during the winter. And those shortages may be a little harder to mitigate through the utilization of outdoor sources.”

The well-watered Aspen golf course, which sits between Castle and Maroon creeks.

No outdoor watering

The picture gets brighter in Oamek’s “intervention scenario,” the least demanding of the three scenarios.

Runoff would still come six weeks earlier, and there would still be half as much water flowing down Castle and Maroon creeks.

But demand for city water is projected at 2,280 acre-feet a year, as the scenario assumes the city will curtail the use of treated waters for outdoor purposes during a drought.

“During times of shortages, we set outdoor usages to zero,” Oamek told the council, explaining that would drop annual demand in the model to about 2,200 acre-feet, down from 3,500 acre-feet.

In that scenario, there might be 14 years out of 25 when there are water shortages, but only in five of those years would the shortages be over 100 acre-feet, and none would produce shortages over 1,000 acre-feet.

One of the city’s irrigation ditches that carries water from Castle Creek toward the city’s golf course.

No ditch water

Cindy Covell, the city’s water attorney with Alperstein and Covell, then told the council she asked Oamek — the day of the council work session — to run another scenario where the city also stopped diverting water it controls into three irrigation ditches on lower Castle Creek, downstream of the city’s diversion dam to its treatment plant.

“I was thinking, if you were going to run a scenario that involved no outdoor irrigation – you’re telling your customers they can’t water their lawns – you probably are going to have a hard time taking irrigation water down those ditches and irrigating your golf courses and your parks,” Covell said.

Oamek ran a calculation — not a full model run — and said curtailing irrigation drove the number of years with indoor water shortages down to just two years out of 25, and in only one of those years was the shortage greater than 100 acre-feet.

In 2012, the city diverted up to a total of 20.5 cfs into the three Castle Creek irrigation ditches, with the highest diversion rate in June, according to the Wilson Water study.

The city has diversion rights in the Holden Ditch of 25.9 cfs with a 1952 decree, in the Marolt Ditch of 13.6 cfs with a 1934 decree, and in the Si Johnson Ditch of 2.55 cfs with a 1936 decree, according to an agreement with the Colorado Water Conservation Board. That adds up to a “paper” portfolio of 42.05 cfs worth of irrigation rights.

“To some extent you already have a bucket of water, which is the downstream irrigation ditches,” said water attorney Paul Noto, who represents three clients opposing the city’s conditional storage rights in water court, and was asked to comment at the work session by the mayor.

“Tonight we talked about what’s the worst-case scenario, [and] might I suggest that we look at priority irrigation under those ditches,” Noto said. “So perhaps we say, at the golf course we want to keep our fairways and greens green, but maybe we don’t irrigate the rough if the streamflows are below x.”

Noto also pointed out to the council that almost all of their municipal water comes from Castle Creek, and that the water in Maroon Creek is now primarily diverted to power the city’s small hydropower plant on the banks of Maroon Creek.

Maroon Creek, below the diversion, at about 12 cfs during a minimum stream flow demonstration in 2011.

Maintaining instream flows

Maintaining instream flows is a challenge in each of the scenarios presented, as there are dry years when it’s hard for the city to reach its goal of leaving enough water in Castle and Maroon creeks to maintain the environmental flows while also meeting all municipal water demands.

“Worst-case, maximum growth, there is a lot of damage to the instream flows,” Oamek said, noting the annual instream-flow shortages were over 10,000 acre-feet in the worst year in the model.

The city has a policy of maintaining minimum, or instream, environmental flows in Castle and Maroon Creeks.

The Colorado Water Conservation Board holds an instream flow right in Castle Creek for 12 cfs and a right in Maroon Creek for 14 cfs. The state defines that level of flow as the amount of water needed to protect the environment “to a reasonable degree.”

Both of the CWCB’s instream flow rights are junior to the city’s senior diversion rights on Maroon and Castle creeks.

The city, based on the recommendation of a consulting biologist, recently increased its minimum flow target on Castle Creek to 13.3 cfs. As such, the combined minimum instream flow level in Castle and Maroon creeks that the city seeks to maintain is 27.3 cfs.

The city’s policy of voluntarily honoring the state’s junior instream flow rights is centered on a 1997 agreement with the CWCB to protect 12 cfs of flow on Castle Creek. The agreement does not technically extend to Maroon Creek, although the city’s stated policy does.

However, the agreement with the state also includes a provision that allows the city to exempt itself from the policy during periods of “extraordinary drought,” which are not defined.

The provision gives the city latitude to meet its municipal demands and “invade,” as Oamek put it, the junior minimum instream flow rights held by the state, as necessary.

This map from 1984 is one of the few ever published that puts the Maroon and Castle creek reservoirs into the context of the city’s overall water system.

Need a bucket

Staff in the city’s Water Department continue to point out to the City Council that Aspen likely needs some amount of water storage in the future.

“In our integrated water supply system, there are alternatives to storage than can help mitigate our shortages, things like re-use, conservation, ag transfers … but even though these combined can minimize the shortages, storage is still needed because of timing issues,” Margaret Medellin, a utilities portfolio manager for the city told the council Monday night. “To really make these other mechanisms work, we still need a bucket to be able to augment and … re-time the water.”

That message has gotten the attention of Mayor Skadron.

“As we proceed, my goal would be to ensure a sufficient water supply for future generations and to ensure that their options are open,” he said.

He also asked during the meeting, “Does a scenario exist in municipal water planning where storage is not needed beyond just what nature provides?”

“Historically, that’s how Aspen has operated,” Medellin replied. “Aspen has very little storage and has historically operated as a direct-flow water provider. And in areas maybe that are wetter, back East, it is not as problematic.

“And I think the concern is as we are starting to see runoff happening earlier, the demand being extended and happening later into the system … [and] what has worked historically for Aspen, we aren’t convinced is going to work for the next 50 years.

“Even though that it is something that other communities can do, and something that Aspen has done, as we are looking into our models going forward, we’re not convinced that it’s something that is sustainable here,” Medellin said.

However, a 2016 water supply report done by Wilson Water and adopted by the City Council in June of 2016 as a planning document, painted a different picture and found that no storage was necessary – even after factoring in available climate change projections.

The Wilson Water study found that “the results of this analysis indicate the city can always provide sufficient potable and raw water supplies under these modeled demand and hydrology scenarios.

“Existing water supply infrastructure and water rights portfolio developed and managed by the City do not appear to be limiting factors in this evaluation.

“However, during drought periods, physical water supplies may limit the city from satisfying desired ISF (instream flow) bypasses. These modeled ISF deficits are forecasted to occur during drought periods in only the climate scenarios with very low late summer and winter streamflow conditions.

“Most ISF deficits occur at a frequency of 5% of the time or 1 out of 20 years. The predicted average daily ISF deficits are relatively small and can be managed utilizing the existing water supply tools the city has in place and/or is actively developing,” the Wilson Water study said.

And recently completed water-efficiency plans for Basalt, Carbondale, and Glenwood Springs found that those three nearby cities have adequate water supplies for the future without significant storage “buckets.”

A portion of the gravel pit in Woody Creek operated by Elam Construction. It’s hard to capture the scale of the gravel pit, but the little yellow speck in the back edge of the pit is a large dump truck.

Shortage into storage

Medellin also told the council one of the next steps is to convert the shortage numbers from the Headwaters risk analysis to potential storage numbers.

“It’s not a one-to-one conversion,” Medellin said, noting that the storage figure is always larger than the shortage number.

She said a “reservoir operations model” will be used to “apply a reservoir efficiency factor to account for losses and reservoir integrity.”

“What that means is all of the water that we put into a reservoir, we’re not going to get that back out,” she said. “So there is a factor that is commonly added to account for that. Then the next step is going to be to determine what volume of conditional storage rights we need to satisfy that requirement.”

Covell, the city’s water attorney, further explained the process.

“You look at your streamflows, and you say, how often can I fill up this reservoir?” she said. “And on the eastern slope, you might not be able to fill it up more than once every five years. So you say, if I need to be sure I’ve got to have 100 acre-feet of water in storage, I might have to fill up 600 acre-feet, because when I need that 100 acre-feet some of the water will have evaporated and I won’t be able to top it off again because my water right won’t be available.

“And that’s a, maybe, overly simplistic example, but when you’re trying to figure how much storage capacity you need, you have to figure out when you are going to be able to put water in, how much of it’s going to evaporate, and when you’re going to need to take it back out,” Covell said.

Medellin added that the engineering firm Deere and Ault of Longmont is now making calculations for both in-situ and surface water reservoirs, and the storage needs will be based on the representative period of years in the model being used by Headwaters.

The property next to the Elam gravel pit and the Woody Creek raceway that the city of Aspen has put under contract. The city is investigating the site as a place for potential water storage, either underground or above ground.

Settlement talks

It’s not clear yet how the scenarios presented Monday may change the city’s negotiating position with the 10 parties opposing its ongoing efforts in water court to maintain conditional water storage rights for reservoirs on Castle and Maroon creeks.

Last week, the city announced it now intends to transfer its water rights from Castle and Maroon creeks to two potential reservoir sites in Woody Creek, including on land it now has under contract near the Elam gravel pit, and the gravel pit itself.

“The impetus for the purchase is to seek a way to transfer decreed storage rights to locations other than the decreed locations on Castle Creek and Maroon Creek,” the city said in a July 19 press release titled “Aspen City Council to Purchase Land for Possible Alternate Site for Water Storage.”

“Since 1965, the city has held decreed water storage rights at sites in Maroon and Castle Creek Valleys but the nature of these pristine locations has made it a priority for the city to first seek other ways to address potential water shortages and to seek alternate locations for water storage,” the city stated.

And Skadron was quoted in the release as saying “securing Aspen’s water future is an essential task of today’s city council. It is council’s responsibility to look out for the welfare, safety, and health of the community and we take that very seriously. In addition, our commitment to protecting our environment is also a priority and this land purchase is a way to both protect the community and preserve Castle and Maroon valley wild lands.”

The city also said in the press release about the Woody Creek options that “other alternatives for water storage are still being explored, including in-situ reservoirs at the Aspen Golf Course, Cozy Point Ranch, the portion of the city-owned Maroon Creek golf course, and other upper valley locations.”

A second settlement conference with the opposing parties in the two water court cases is set for Aug. 2 and a status conference with the water court referee is Aug. 8.

Editor’s note: Aspen Journalism is collaborating with The Aspen Times on coverage of rivers and water. The Times published a version of this story on July 25, 2017.

@ColoradoClimate: Weekly Climate, Water and #Drought Assessment of the Intermountain West

Upper Colorado River Basin month to date precipitation through July 24, 2017 via the Colorado Climate Center.

Click here to read the current assessment. Click here to go to the NIDIS website hosted by the Colorado Climate Center.

Aspen embraces water #conservation

From Aspen Public Radio (Elizabeth Stewart-Severy):

The lush green mid-summer lawns that dot Aspen’s landscape don’t just rely on summer monsoon rainstorms. They depend on irrigation. The Aspen Water Utility statistics show that about 60 percent of residential water use goes toward landscaping, even though most sprinklers only run a few months of the year. City officials hope to change that.

“We have to look at the importance of having smart water use,” said Molly Somes of the Aspen Parks Department. “We have to protect our resources.”

Aspen City Council approved a new ordinance that regulates outdoor water use this past spring. Landscape architects working on new projects are required to go through a design review with the parks department, and it sets a 7.5 gallon per square foot cap on summer irrigation.

So, will this actually save water? Nate Hines is a water planner and irrigation consultant who works in Colorado, Arizona, California and other arid western states…

Hines identifies three problems with water efficiency: design, management and maintenance.

“There’s a huge breakdown between how a system is designed and then how it’s actually managed day-to-day, and there’s just an extraordinary amount of waste there,” he said.

At least in its pilot year, the city is only requiring efficient design. Areas of lush green grass will need to be offset with plantings of native, drought-resistant plants and grasses. It also means installing so-called “smart” irrigation systems that react to real-time weather. These can conserve up to half the water compared to older sprinklers.

Somes is tasked with taking inventory of the city’s own outdoor water use.

“I’m going to take a look at all of those parks and really kind of map out where we’re doing strong, where we could do some better efforts,” Somes said.

Still, large city parks, like Wagner or Paepcke in the heart of Aspen, likely won’t see native grasses replace the typical turf, like Kentucky bluegrass.

“We want to be careful not to damage the aesthetic of Aspen and the historical aspects of Aspen through this process,” she said.

That process will have implications for local landscape architects, but Patrick Rawley with Stan Clauson Associates said the new requirements won’t mean changes to his daily design work. Native grasses and smart irrigation aren’t new concepts.

“They’re a matter of course for a good landscape design office,” Rawley said.

The new ordinance does mean another set of permit approvals before developers can start projects.

“This is going to be another layer of added regulations of things we already do as best practices in the profession,” he said.

Happy #ColoradoRiver Day #COriver

Here’s the link to Coyote Gulch’s Colorado River Category

@ConservationCO report: #ColoradoRiver grade = “D”

Graphic via Holly McClelland/High Country News.

Here’s a guest column from running in the Glenwood Springs Post Independent

This month, my organization, Conservation Colorado, released its first-ever “rivers report card.” We analyzed eight major rivers across Colorado based on four main factors: flow, water diverted out of basin, water quality and major dams. Unfortunately, only one of the eight rivers assessed got an “A” grade, while four received grades of “C” or worse.

Our own Colorado River received a “D.” There are several reasons why we graded the river so low.

First, the Colorado River is one of the nation’s hardest-working rivers, providing drinking water to 35 million people and supplying more water for Coloradans than any other river in the state. The enormous demand for the Colorado River’s water has severely altered the flow of the river. As just one example, Colorado River tributaries such as the Blue, Frying Pan and Fraser rivers have up to 60 percent of their water diverted out of them to be consumed and used for other purposes.

Several other issues plague the Colorado River. Its water quality is low due to high levels of salt and agricultural runoff. Dams are abundant on the river, and contribute to an unsustainable increase in demand for water. And, a huge amount of the Colorado River’s water is diverted from the Western Slope to the Front Range. These pipelines, dams and reservoirs are causing significant damage to both the Colorado River’s ecology and Western Slope communities.

Finally, climate change is another imminent threat to the Colorado River. Higher temperatures lead to more evaporation, while diminishing snowpack leads to lower flows. This increases the gap between supply and demand for this already overused river. Water temperatures rising also poses a threat to water quality for fisheries.

#ColoradoRiver infrastructure essential to W. U.S. economy #COriver

Here’s a guest column from News Deeply (Ted Kolwalski):

The Colorado River flows 1,500 miles (2,400km) – through rises and rapids, valleys and deserts, all the way to Mexico.

But this river of critical importance to our country is facing incredible challenges.

The Colorado River provides water to almost 40 million Americans, but it is still reeling from the impacts of a 17-year drought that has drained most of Lake Mead and left Arizona and Nevada on the brink of imposed shortages.

The struggle we face to protect the Colorado River basin is one of necessity, not choice.

Every drop of the river is already accounted for, and due to a variety of factors – including a growing population and rising temperatures – the river’s flows are projected to decline 20 percent by 2050. Five of the top 10 fastest-growing states in the country are within the Colorado River Basin, and they depend on a reliable and healthy Colorado River.

If we are to avert a crisis and ensure a healthy and secure water supply for the years to come, we need to have a serious discussion about how best to manage the finite water we have available.

Through the Walton Family Foundation’s Colorado River basin initiative, my colleagues and I seek creative solutions to ensure the Colorado River basin has the water supply it needs. We know that smart, innovative conservation solutions benefit both the environment and the economy – and what is good for the Colorado River is good for its people, too. Because when the river benefits, so do the communities and economies that rely on it.

This means that we must enter a new phase of collaboration, innovation and flexibility when it comes to how we use and manage our water – one that must include robust support for smart water infrastructure projects.

There has been a lot of talk recently about the critical need to fund infrastructure projects in the United States. But amid all of the talk – from the Trump administration and Democratic leaders alike – politicians have put too little focus on the importance of smart water infrastructure to the people and economy of the West, and the Colorado River basin in particular.

To elevate water infrastructure in these ongoing discussions, we developed a white paper on the Colorado River’s Critical Infrastructure Needs.

Each of the projects highlighted in the paper offers benefits for both people and the environment. They can create jobs and enhance local communities, prevent hazardous situations from developing because of aging infrastructure, and underscore the importance of using water efficiently. These projects, if funded and implemented effectively, can improve the resilience of water supplies both within the basin states of Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming, as well as across the entire West.

The infrastructure projects span sectors and communities and include support for ongoing projects – especially those connected with tribal water rights settlements. A great example is the Gila River Indian Community Pima-Maricopa Irrigation Project, a water delivery system designed to allow full use of water belonging to the Gila River Indian Community for irrigation of lands within the reservation in south-central Arizona.

Much of the community’s traditional agricultural economy has suffered from loss of both surface and ground water supplies over many decades. The construction and completion of the irrigation project will provide more reliable supplies for existing agricultural land, address natural resource concerns including water conservation and soil and water degradation, allow for re-irrigation of lands historically farmed by community members that have fallen fallow as a result of water scarcity, and replace inefficient, leaky existing facilities. Critically, the project includes habitat restoration components and can help restore the Gila River, the community’s namesake.

Other projects highlight partnerships among multiple stakeholders, like the Salton Sea Management Program. The Sea (a misnomer – the body of water is California’s largest manmade lake) is a looming human health and environmental crisis. As water recedes due to rising temperatures and reduced water flowing from the Colorado River, the dry lake bed is exposed. Years of accumulated fertilizers and other agricultural chemicals that leeched into the sea from nearby farms are being released into the air as dust. The toxic pollution is plaguing nearby communities and has caused an asthma crisis among residents.

The proposed Salton Sea Management Program provides a road map for the state of California, local agencies, national conservation organizations and the federal government to ensure that essential dust suppression and habitat restoration projects will be completed within the next 10 years. That timeline is necessary in order to protect the public’s heath, maintain the region’s natural resources and safeguard the region’s farming economy.

The Gila River Indian Community Pima-Maricopa Irrigation Project and Salton Sea Management Program show how conservation can help preserve economic security and quality of life. Conservation solutions that make economic sense are often the most practical and impactful. In the Colorado River basin, we know that implementing these solutions is possible. We’re committed to helping to support their success.

Aspen plans to transfer Castle and Maroon creeks conditional water rights to other locations — @AspenJournalism

The property next to the Elam gravel pit and the Woody Creek raceway that the City of Aspen has put under contract. The city is investigating the site as a place for potential water storage, either underground or above ground.

From Aspen Journalism (Brent Gardner-Smith):

Aspen city officials said Wednesday they plan to seek water court approval to transfer the city’s two conditional water rights to store a combined 13,629 acre-feet of water in upper Castle and Maroon creeks to other potential storage locations in the Roaring Fork River valley.

Those locations include 63 acres of land it has under contract to purchase for $2.65 million on Raceway Drive in Woody Creek, a neighboring gravel pit operated by Elam Construction Inc., the city’s golf course, portions of the Maroon Creek Club golf course owned by the city, and Cozy Point Ranch.

Aspen City Manager Steve Barwick said at a news conference the city is not walking away from its conditional water rights tied to the potential dams and reservoirs on Castle and Maroon creeks, but instead is holding on to those rights while seeking to transfer them, and their 1971 decree date, to new locations.

“We’re going to attempt to transfer the water rights down to these sites,” Barwick said. “There would not be any abandoning of water rights. It would be moving the water rights from one site to another.”

To do so, the city would have to file a new water rights application in water court and it would be up to a water court judge to determine how much of the current water rights could be transferred, and if the city can keep the 1971 decree date.

In October, the city filed two due-diligence applications for its conditional rights on Castle and Maroon creeks and is now being opposed by 10 parties.

The potential Castle Creek Reservoir would store 9,062 acre-feet of water behind a 170-foot-tall dam and the Maroon Creek Reservoir would store 4,567 acre-feet behind a 155-foot-tall dam within view of the Maroon Bells.

The city expects to put forward a settlement offer to the opposing parties next week, with the potential Woody Creek storage sites at the heart of the offer, Barwick said. A settlement meeting is slated for Aug. 2.

Paul Noto, a water attorney representing American Rivers, Colorado Trout Unlimited, and the Roaring Fork Land and Cattle Co. in the two water court cases, said Wednesday a “main issue” for his clients is whether the city will commit to “never damming” Castle and Maroon creeks.

A news release issued Wednesday by the city quoted Aspen Mayor Steve Skadron as saying the pending Woody Creek land purchase “is a way to both protect the community and preserve Castle and Maroon valley wild lands.”

Both of the dams, which the city has told the state since 1965 it intends to build someday, if necessary, would inundate portions of the Maroon Bells-Snowmass Wilderness.

“While the Castle and Maroon Creek reservoirs may have seemed like a good idea (in the 1960s), we congratulate the city for this win-win alternative that protects our iconic landscape and provides for the city’s water needs,” said Sloan Shoemaker, the executive director of Wilderness Workshop, in a press release.

(Above is audio of a press conference held at Aspen city hall on Wednesday, July 19, 2017. The audio was recorded by Elizabeth Stewart-Severy of Aspen Public Radio. The main speaker is Aspen City Manager Steve Barwick. Also present at the press conference were Curtis Wackerle, editor of the Aspen Daily News, David Krauss, editor of The Aspen Times, Elizabeth Stewart-Severy, environment reporter at Aspen Public Radio, and city staff members David Hornbacher, Margaret Medellin and Mitzi Rapkin. Aspen city council member Bert Myrin was also in the room, but did not speak. Brent Gardner-Smith of Aspen Journalism can be heard asking questions via a phone on the table in the room.).

A map provided by the city of Aspen showing the two parcels in Woody Creek it has under contract. The city is investigating the possibility of building a reservoir on the site, as well as looking at the possibility of a reservoir in the neighboring Elam gravel pit.

Woody Creek options

The two Woody Creek parcels now under contract by the city include a 61-acre parcel and a 1.8-acre parcel. Both are owned by Woody Creek Development Co. of Fort Collins.

The undeveloped 61-acre parcel is valued at $2.3 million by the county assessor and the 1.8-acre parcel, also undeveloped, is valued at $100,000.

The city does not have an option to purchase the Elam gravel pit, which is visible from Highway 82, but is in discussions with the company about opportunities.

“We are interested in working with the city on its water storage project,” Russell Larsen, the chief operating officer of Elam, was quoted as saying in the news release. “There are benefits for both entities. The city can assist us with reclamation of the property into the future and we are eager to explore ways we can support Aspen’s water storage needs.”

The city also said it is researching “the environmental, hydrologic and geologic nature” of the two Woody Creek parcels, and Barwick said he expects the City Council to make a decision to purchase the land within 90 days.

The city will be studying the 63 acres for the potential to develop both above-ground storage and in-situ, or underground, storage. And Barwick said the gravel pit may present the best potential to build an above-ground reservoir, “since there is already a pit there.”

If reservoirs were developed in any of the potential locations, the stored water – if used to meet municipal water demands – would have to be pumped back up to the city’s water treatment plant, which sits on a hill behind Aspen Valley Hospital.

“Worst-case scenario, you pump water into them and then pump water back up,” Barwick said. “We would prefer someday to create a gravity-fed storage system.”

He also said the Aspen City Council must figure out how much water the city may need to store in the future. A second work session on the topic has been set for Monday evening.

A portion of the gravel pit in Woody Creek operated by Elam Construction. It’s hard to capture the scale of the gravel pit, but the little yellow speck in the back edge of the pit is a large dump truck.

Praise from opponents

Officials from Western Resource Advocates also praised the city’s announcement.

“We’re pretty encouraged,” said Rob Harris, a senior staff attorney at Western Resource Advocates. “We’re not at the destination yet, but if you want to reach a different destination, the first concept is to change course, and it seems like the city has done that today.”

But in a news release Western Resource Advocates also included a cautionary note.

“The city’s announcement does not, in itself, end the pending water court cases considering the city’s conditional water rights,” the release said. “The city’s press release makes clear that its willingness to entirely drop the Maroon and Castle creeks dams from its water rights portfolio has preconditions.”

Noto, the water attorney for three clients in the cases, said the city’s announcement was “potentially a step in the right direction. I appreciate the fact that they are looking hard at alternatives.”

When asked about the city’s intention to try to transfer the 1971 decree date of the Castle and Maroon rights, Noto pointed out if they were successful, those rights would then be senior to the instream flow rights held on the Roaring Fork River by the Colorado Water Conservation Board and the recreational in-channel diversion rights held by Pitkin County in its new kayak park in Basalt.

“They would be jumping ahead, essentially, of two large water rights, and I’m sure that will be cause for concern,” he said.

Editor’s note: Aspen Journalism is collaborating with The Aspen Times on coverage of rivers and water. The Times published this story online on July 19 and published it in its printed edition on July 20, 2017.