Researchers still recommend a conservative approach to river management.
(John Burcham | The New York Times) The Colorado River flows through the Grand Canyon in 2020. A new study predicts that the river’s flows will increase between 2026 and 2050.
| May 9, 2024, 11:53 a.m.
This article is published through the Colorado River Collaborative, a solutions journalism initiative supported by the Janet Quinney Lawson Institute for Land, Water, and Air at Utah State University.
A new study found that the Colorado River may experience a rebound after two decades of decreased flows due to drought and global warming.
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“Importantly, we find climate change will likely increase precipitation in the Colorado headwaters,” Professor Martin Hoerling, the study’s lead author, wrote to The Salt Lake Tribune in an email. “This will compensate some if not most of the depleting effects of further warming.”
Recently published in the Journal of Climate, the study by researchers at the University of Colorado Boulder’s Cooperative Institute for Research in Environmental Science used data from the Intergovernmental Panel on Climate Change.
Researchers analyzed precipitation, temperature and flows at Lees Ferry, a point 15 miles downstream of Glen Canyon Dam in northern Arizona. Lees Ferry serves as the dividing line between the Upper and Lower Colorado River Basin.
Winter snows melting off mountains in the Upper Basin states of Colorado, New Mexico, Utah and Wyoming and into the river each year produce about 85% of the river’s flow.
The study’s climate projections forecast that there is a 70% chance that climate change will lead to increased precipitation in the Upper Basin between 2026 and 2050. That precipitation increase could boost the river’s flows by 5% to 7%.
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The Colorado River’s flows have decreased by 20% since the turn of the century.
But researchers caution that these forecasts aren’t a bailout for the beleaguered river. Climate change will lead to a higher variability in precipitation, meaning that “extremely high and low flows are more likely” on the Colorado River between 2026 and 2050, according to the study.
“When there is that much uncertainty involved in something, the smartest management approach is to be conservative,” said Brian Richter, who serves as the president of Sustainable Waters, an organization focused on water education.
Richter, who was not involved in the University of Coloraro study, recently authored a different study about where the Colorado River water goes from its headwaters to its dry delta in Mexico.
“That there might be better precipitation is good to know,” he said, “but it’s not cause to abandon the reality that we need to aggressively reduce our level of consumption.”
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Water managers across the West are currently working to negotiate management of the Colorado River and its reservoirs after 2026, when current operational guidelines from 2007 expire. The Bureau of Reclamation, the federal agency that oversees water projects across the country, aims to complete a draft environmental impact statement for post-2026 operations by the end of this year.
Hoerling, too, pointed to the need for more responsible river use as water managers hash out future river guidelines: “The crisis, though triggered at this time by nature, exposed a structural problem of how water is used, especially in the Lower basin of the Colorado River.”
Arizona, California and Nevada — the Lower Colorado River Basin states, which draw their water from reservoirs — have committed to water cuts. The Upper Basin states argue that they shouldn’t have to cut their water use because they experience natural water cuts due to the river’s decreasing flows and evaporative losses.
Hoerling wrote that, given a warming planet and highly variable river conditions responsible management necessitates more research on how low the Colorado River’s flows could be in the future.
Unprecedented spawning, low flows, hotter temperatures — these are some of the phrases used by state biologists to describe the situation facing Colorado’s northwestern fisheries as a drought persists in the region.
At the start of June, 100% of Colorado was experiencing some drought conditions following the state’s lowest snowpack on record and warmer-than-normal temperatures across the winter months. Record-setting heat in March led to an early melt-off and has brought concerns into summer for Colorado’s fisheries as the drought impacts streamflows and reservoirs.
“This drought is something that’s being closely watched with a lot of anxiety by many, many people,” said Jon Ewert, Colorado Parks and Wildlife’s aquatic biologist for Grand and Summit counties, during a June 2 drought tour in Grand County.
“As far as impacts we’ve seen so far this year, it’s kind of interesting because what we have seen so far this spring in terms of recreational angling is an incredibly good spring for fishing,” Ewert said.
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This, however, has more to do with timing than as a predictor for what the drought will mean for anglers this summer. The March heatwave moved up the timelines for peak streamflow and other aquatic markers.
“Everything’s a month ahead of schedule this year,” Ewert said. “The rainbow (trout) spawned a month early … The caddis are hatching on the Colorado River, which is usually like a July 1 thing. And so the thing is that the water is low and clear, and the fish are hungry coming out of winter, and they’re very aggressive and the bugs are hatching early.”
Ben Felt, Parks and Wildlife’s senior aquatic biologist in its northwest region, at a Monday, June 1 meeting of Colorado’s Drought Task Force in Winter Park, said this has also brought “unusual timing” for Parks and Wildlife’s projects in the region.
“What we’re seeing is that the ice came off most of our reservoirs, a good 4 to 6 weeks earlier than usual, and that throws off a few things where a lot of the work that we do in the spring is aimed at removal of invasive northern pike, and northern pike spawning timing was way earlier this year,” Felt said. “We’ll likely see some increases in northern pike numbers, just based on our reduced ability to be out there that early when the pike are spawning — it’s just completely unprecedented in terms of the timing of this fish.”
While Ewert said this is leading to “really great conditions” compared to what Colorado anglers typically see in spring and early June, it begs the question: “What’s it going to look like in July? What’s it going to look like in August?”
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“We all have some grim ideas about that,” he said.
At the start of June, 100% of Colorado was experiencing some drought conditions following the state’s lowest snowpack on record and warmer-than-normal temperatures across the winter monthsU.S. Drought Monitor/Courtesy Photo
Russ Schumacher, Colorado’s state climatologist, said climate models are forecasting a good chance for an active monsoon season kicking off in the middle of July, with a continued trend of warmer-than-normal temperatures through the summer. Schumacher added that whatever relief was brought by cooler temperatures and closer-to-normal precipitation in May is not going to make up for deficits in the winter’s snowpack.
“The river flows are going to be extremely low in the summer,” he said. “The drought impacts are going to continue to emerge.”
Ewert shared some hope — with a caveat — around what an active monsoon could mean for the state’s fisheries.
“The thing about a monsoon in low water years like this, in terms of the rivers, we know we’re not going to get flushing flows anywhere this year… and we’re probably going to have high temperature issues in rivers like the Colorado and the Fraser,” Ewert said.
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“However, if we have a consistent and active monsoon, the thing about monsoonal patterns is that even if we don’t have enough precipitation to even be a measurable amount of precipitation, it’s getting that cloud cover … that consistent cloud cover every afternoon that interrupts the solar gain heating up that water,” he added.
Low streamflows and high air temperatures can prove stressful and deadly for Colorado’s fish populations.
“We actually pretty regularly implement voluntary fishing closures in these fisheries during drought years,” Ewert said.
Colorado’s rivers are expected to see near-record lows this summer as drought ripples across the state.Ali Longwell/Summit Daily News
Per Parks and Wildlife’s fishing regulations, when river temperatures rise above 71 F, the agency will issue an emergency fishing closure. When temperatures rise, oxygen levels in the water drop and fish can stop feeding, become more susceptible to diseases and stress from angling, which can ultimately cause them to die. The agency can also issue emergency closures when streamflows drop below 50% of the daily average. Low flows can cause fish to bunch up in small areas, increasing competition for food and making them more susceptible to angling pressure and disease.
“Warm temperatures and low flows that we are seeing across the state are likely to get more pronounced as we get into the summer months,” Felt said. “Overall, there’s just gonna be a higher potential for fish kills this year based on the drought and issues with water levels and temperatures and water quality.”
During his presentation, Felt shared how Parks and Wildlife’s fisheries work in the region has been impacted by the conditions so far.
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The Colorado River
The Colorado River’s headwaters are located in Grand County. Felt reported that in the river’s upper reaches, “the reservoirs and transbasin diversions up there have reduced the flows and flow regimes that the upper Colorado would traditionally have.”
The Colorado River has 12 major transmountain diversions. They carry water from west of the Continental Divide — where 80% of the state’s water supply comes from — to the east — where 90% of the state’s population lives.
“The situation is that the natural morphology of the rivers in this part of the state just don’t align with the reality of the flows that are in those rivers, and that could cause some habitat issues and temperature issues,” Felt said. “Those concerns can become more pronounced in drought years.”
While the transmountain diversions can create a “lack of high volumes of water” in Grand County, Ewert said that there can be some benefits.
“There are tradeoffs that occur when reservoirs are drawn down, of course,” he said. “We benefit from, in Grand County, these places where bottom release dams are cooling down the river and we can make use of that in really beneficial ways … that water can be used to mitigate some of these high-temperature periods of time that we see.”
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This year, the draw down of some reservoirs in the upper reaches of the Colorado River could impact recreation and fisheries. The Williams Fork Reservoir, currently sitting at 54% full, will be closed to boating this year due to its lowered level.
“We kind of expect to be rebuilding the Williams Fork fishery more or less from scratch once we get to the other side of this drought,” Ewert said.
Downstream on the Colorado River, Parks and Wildlife is monitoring the 15-Mile Reach — which Felt called a “stronghold” for native fish species that are threatened and endangered.
“This is a stretch that’s in the Grand Valley that’s especially vulnerable to low flows because it’s located just downstream of a couple major diversions in the Colorado, and it’s also upstream of the Gunnison River confluence,” Felt said. “We did see that the flows in the 15-Mile Reach drop to 52 cfs earlier this spring, which is a pretty alarming amount of water to be in the mainstem Colorado River.”
Felt reported that around that time, monitoring efforts showed the fish in “good condition, but were fairly concentrated in the pools of habitat.” This quality habitat can be hard for fish to travel between when flows are low, he added.
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“This is certainly a situation that we will continue to actively monitor, and if flows drop again, and if fish start to become stranded, we may consider some sort of salvage efforts out there,” Felt said.
The Yampa and White rivers
Stagecoach Reservoir in September 2025.Trevor Ballantyne/Steamboat Pilot & Today archive
Felt shared that within the Yampa and White rivers, Parks and Wildlife’s work around recovery of native fish species has been limited by the low flows.
As of June 10, the Yampa River in Steamboat Springs was running at 330 cubic feet per second, significantly lower than the 2,320 cfs it was running at the same time last year, according to the U.S. Geological Survey. The White River below Meeker was running at 214 cfs on June 10, when the normal flow for this time of year is closer to 1,500 to 2,500.
“There’s not enough water to launch the rafts or the jet boats,” Felt said. “What we anticipate is that if there are reductions in electrofishing efforts, that will, combined with low water levels, likely result in some increased densities of some of these non-native fish species that we’re managing against.”
Within the Stagecoach Reservoir tailwaters on the Yampa River — which Felt called an “incredible” and “very, very popular” fishery — there has been a mandatory fishing closure since October. Felt said when the flows here drop below 40 cfs, the fish become “very vulnerable to angling,” and experience “increased levels of angler-induced mortality.”
Parks and Wildlife works alongside the Upper Yampa Water Conservancy District and the Colorado Water Trust to plan releases out of the reservoir as part of an instream flow program.
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“We decided to wait till later in the year to release that water — the Water Trust made that decision — to ultimately hedge our bets a little bit, and still have that water available when the conditions could be even more critical in the Yampa,” Felt said, adding that the groups are also studying the changes to habitat quality during “unprecedented flow levels down there.”
Felt added that Parks and Wildlife has been “actively working” to rebuild fisheries in Lake Avery and Rio Blanco Lake, which were both drained in the past few years for outlet and dam repairs.
“There’s some uncertainty that remains on both the water management and fisheries management at both of those lakes based on these drought conditions,” he added.
DENVER — Summer vacation season is here, and Denver7 Investigates is hearing from more Coloradans frustrated by costly surprises and misleading bookings when planning their getaways.
▶️ WATCH: Denver7 Investigates’ Jaclyn Allen has tips to avoid costly travel booking mistakes
Vacation booking blunders are costing Colorado travelers. Here’s what to look out for.
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Eagle County resident Mourghan Ridenour was planning a hockey trip to Denver for her family last month.
“I have two boys that play hockey and we travel and book hotels all the time,” she said.
She thought she had booked a room directly through Marriott. But when they arrived, there was no reservation.
Ridenour had unknowingly booked through a third‑party site with hundreds of negative reviews on the Better Business Bureau.
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“I kept calling and calling, getting different people. What they kept saying is, ‘Oh, our system is needing to upload. Oh, it hasn’t been updated,’” she said. “It was a lot of excuses, but the money was never brought back.”
She eventually got her $288 back after disputing the debit card charge through her bank.
“All my friends and family, we’re all so busy trying to do five things at once, so you’re not noticing this, which from now on I’m going to,” she said.
The BBB says it has seen nearly 300 complaints and 550 negative reviews involving vacation‑related bookings from Colorado in the past year.
Cameron Nakashima with the BBB said fake booking websites and impostor listings are common.
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“They give you a fake booking number, and then it’s not until later that you realize you’ve been out all this money and you don’t actually have a flight booked,” Nakashima said.
He says fraudsters even make fake property listings on platforms like VRBO and Airbnb.
“They’ll go on to places like VRBO and these other trusted sites, and they’ll create fake listings, and those platforms are working hard to weed those out, but it does get through every once in a while,” Nakashima said.
The BBB recommends:
Verify the website URL matches the official company site. Watch for misspellings.
Check that phone numbers come directly from the hotel, airline or rental company.
Do a reverse image search of property photos.
Use Google Maps street view to see if the exterior matches the listing.
Book directly through official company apps or sites.
Use a credit card for more protection in case of a dispute.
Denver7 has also reported on rental car issues, including a Commerce City rental car location where customers said charges increased dramatically from add‑ons and unexpected fees.
While Routes said they were making changes, other rental car companies have similar complaints.
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“You realize what seems to be the least expensive option at first, actually, there’s all these little fees, like the administrative fee, the gas refill fee, the inspection fees, all these little things that weren’t clear up front, and now you’re paying in a lot of cases like hundreds of dollars more by the end of your trip than what you had budgeted,” Nakashima said.
Bottom line: Research before you book, check reviews and BBB ratings, and read the fine print.
Sometimes, the cheapest option really is too good to be true.
If you believe you’ve been misled in a booking, you can file a complaint at bbb.org and report fraud to the FTC at reportfraud.ftc.gov. Or reach out to the Colorado Attorney General.
Denver7
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Got a tip? Send it to the Denver7 Investigates team
Use the form below to send us a comment or story idea you’d like the Denver7 Investigates team to check out. You can also email investigates@Denver7.com or call our newsroom at 303-832-0200.
Hideaway Creek Cabin, which is in a private, members-only ski community in Colorado’s San Juan Mountains, is set to be auctioned next month.
Listed for $25.7 million, the home is the only completed private residence within Cimarron Mountain Club, a 1,900-acre ski-focused community limited to 13 families.
The 35.23-acre property is being offered through global real estate auction house Concierge Auctions in cooperation with Compass Real Estate Broker Steven Shane.
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Listed for $25.7 million, the fully furnished Hideaway Creek Cabin offers a rare opportunity to own within a private 1,900-acre ski community limited to just 13 ownership families. (Photo courtesy of Tin House Creative)
Listed for $25.7 million, the fully furnished Hideaway Creek Cabin offers a rare opportunity to own within a private 1,900-acre ski community limited to just 13 ownership families. (Photo courtesy of Tin House Creative)
An interior image of Hideaway Creek Cabin at 4901 Cimarron Mountain Rd., Cimarron, Colorado 81220. (Photo courtesy of Tin House Creative)
Listed for $25.7 million, the fully furnished Hideaway Creek Cabin offers a rare opportunity to own within a private 1,900-acre ski community limited to just 13 ownership families. (Photo courtesy of Tin House Creative)
An interior image of Hideaway Creek Cabin at 4901 Cimarron Mountain Rd., Cimarron, Colorado 81220. (Photo courtesy of Tin House Creative)
Nestled on more than 35 acres in Colorado’s San Juan Mountains, Hideaway Creek Cabin combines luxury mountain living with immediate membership access to one of North America’s most exclusive alpine clubs: Cimarron Mountain Club. (Photo courtesy of Tin House Creative)
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Listed for $25.7 million, the fully furnished Hideaway Creek Cabin offers a rare opportunity to own within a private 1,900-acre ski community limited to just 13 ownership families. (Photo courtesy of Tin House Creative)
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“Extraordinary properties deserve extraordinary exposure, and opportunities as rare as this simply do not come to market often,” said Chad Roffers, CEO and co-founder of Concierge Auctions.
Offered fully furnished, the over 4,000-square-foot home features four bedrooms and five full bathrooms. The interior includes a full appliance package with a refrigerator, freezer, oven, range, microwave, dishwasher, washer and dryer. Window coverings and ceiling fans are installed throughout the home, according to the listing.
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Completed in 2025, the home also features radiant heat throughout, two wood-burning fireplaces and a solar energy system.
“You’re not simply purchasing a home –– you’re gaining access to an entire private mountain lifestyle that very few people will ever experience,” Shane said.
Unlike most traditional ski properties, ownership includes membership to Cimarron Mountain Club, a private alpine enclave more than twice the size of Aspen Mountain.
Accessible only by snowcat, the mountain offers untouched powder, no lift lines and highly personalized experiences led by 14 expert guides. Members have access to three snowcats, a newly completed 15,000-square-foot private lodge, Michelin-caliber dining and professional concierge services.
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Nestled on more than 35 acres in Colorado’s San Juan Mountains, Hideaway Creek Cabin combines luxury mountain living with immediate membership access to one of North America’s most exclusive alpine clubs: Cimarron Mountain Club. (Photo courtesy of Tin House Creative)
Nestled on more than 35 acres in Colorado’s San Juan Mountains, Hideaway Creek Cabin combines luxury mountain living with immediate membership access to one of North America’s most exclusive alpine clubs: Cimarron Mountain Club. (Photo courtesy of Tin House Creative)
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Nestled on more than 35 acres in Colorado’s San Juan Mountains, Hideaway Creek Cabin combines luxury mountain living with immediate membership access to one of North America’s most exclusive alpine clubs: Cimarron Mountain Club. (Photo courtesy of Tin House Creative)
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Approximately 30 minutes from Montrose Regional Airport, at 4901 Cimarron Mountain Rd. in Cimarron, the area also provides trout fishing, hiking, boating, climbing, wildlife viewing and backcountry exploration beyond winter recreation.
Curecanti National Recreation Area, Blue Mesa Reservoir and the historic mountain towns of Ouray and Telluride are nearby.
Bidding for Hideaway Creek Cabin is scheduled to open on July 14 via the firm’s online marketplace, conciergeauctions.com. The auction will close live on July 28 at Sotheby’s New York as part of the New York Global Sales lineup.
As part of Concierge Auctions’ Key For Key giving program in partnership with Giveback Homes, the closing will result in funding toward new homes built for families in need.
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