Longtime district engineer Ken Curtis has been appointed the new general manager for the Dolores Water Conservancy District.
Curtis replaces Mike Preston, who is retiring after leading the organization that manages McPhee Reservoir for the past 12 years. Preston will stay on during a transitional period serving in external relations.
The two have worked closely together as a management team, said DWCD board president Bruce Smart.
Curtis served as chief of engineering and construction during the 12 years that Preston was general manager…
Preston informed the board in February his intention to retire, and recommended Curtis as his successor. The board agreed to the transition plan in order to facilitate a smooth change over…
Curtis has been involved in all aspects of water management, including delivering water to customers, oversight of project maintenance and upgrades, and invasive mussel prevention program. He also monitors reservoir levels and Dolores River inflows, conducts water policy research and community outreach, and helps coordinate the downstream fishery release and whitewater boating spill.
Coming out of extreme drought, water releases a pleasant surprise
For 51 days this spring and summer, water managers opened the spigots on McPhee Reservoir, sending millions of gallons of water down the Dolores River – a boon to fish, farmers and boaters.
During the last 20 years, only 10 years have been boatable. But this year was remarkable for the number of boating days after extreme drought conditions in 2018.
McPhee Reservoir started 2019 with one of the poorest water levels in its history, but extraordinary snowfall allowed the Dolores Water Conservancy District to fill the reservoir and release 135,000 acre-feet of water.
The high-flow days will benefit the ecology of the entire corridor, said Mike Preston, general manager of the district. The big releases occurred between Memorial Day weekend and the first week of July, with a short intermission after Memorial Day.
The district met with stakeholders, such as boaters and biologists, weekly to determine water management strategy, Preston said.
“So far, everybody is pretty happy,” he said.
The Dolores River Boating Advocates were pleased with the number of boating days. While it was not the longest season ever, it was a good run, said Sam Carter, program and outreach coordinator for the group…
The high levels in the reservoir will allow the district to provide irrigators all the water they have rights to and hold over water in the reservoir for next season, Preston said. The releases from the reservoir will also have lasting benefits for native fish and trees along the river, experts said.
The high flows help maintain and improve habitat for three species of native fish: roundtail chub, bluehead sucker and flannelmouth sucker, said Jim White, aquatic biologist for Colorado Parks and Wildlife.
The bluehead and flannelmouth sucker populations are both depressed in the Dolores. Their populations have been hurt by non-native fish and changes in habitat because of the dam, he said…
This summer, White said he may have observed benefits of the last big water year on the Dolores, which was in 2017. He was surveying fish in Slick Rock Canyon and found an abundance of young flannelmouth suckers possibly from 2017 or 2018, he said. Higher water helps support spawning…
The large amount of spring runoff released from McPhee also kept the water district from needing to tap into water set aside specifically for fish, Preston said. So now the same amount of water can be released over a shorter period of time, which will be beneficial for fish.
The high-water year will also have lasting benefits for trees, such as cottonwoods and willows, because it will recharge the groundwater in the floodplain, said Cynthia Dott, a biology professor at Fort Lewis College. Dott specializes in studying the floodplain forest habitat and has worked on the Dolores River with her students.
Rainwater does not provide enough water to recharge the water table, and when the table drops too low, it can hurt large cottonwoods, she said. But there should be plenty of groundwater for the trees to tap into next year, she said.
“They will have plenty of water to keep their feet wet,” she said.
The high flows were also traditionally needed to scour the banks of rivers and leave open, muddy areas for young cottonwood seedlings to get established, she said.
However, because there have been so many years of low flows on the Dolores, willows have established themselves along the banks and high flows now are not enough to rip them free, she said.
“You’re all here at a momentous time,” guide Trey Roberts said before the drop. “You’re about to raft a big, famous, rare river.”
Jeanette Healy of Utah had been waiting 10-plus years for this chance on the Dolores. Doug Nie, a kayaker from Albuquerque, had been waiting even longer. Also here were Rick and Beverly Anderson, a young couple from Albuquerque as well.
“We figured we could do the Las Animas and Arkansas out in (Buena Vista) any year,” Rick said. “But this is our one chance to do Dolores.”
Chances have been tough to come by since the 1980s, when the McPhee Dam began trapping the water that Dominguez and Escalante found to be rushing during their 1776 expedition. El Rio de Nuestra Señora de Dolores, they called it — the River of Our Lady of Sorrows…
Most joyful now are the boaters who had hoped this year’s snowpack would grant McPhee’s occasional controlled “spills.” As of last week, the Dolores Water Conservancy District expected releases to remain at or above 1,200 cubic feet per second through June 23, keeping the river fun until then at least.
That would mean a rafting season of almost one month here, which seems a short window. But longtime river rats regret to say that’s long for the Dolores.
Bill Dvorak, who’s frequented the state’s rivers since the ’60s, can’t recall a longer season. He ran the Dolores in 2017; his last time before that was 2009. “Every six to eight years is about when I get on it,” he said.
And he gets on it almost every floatable opportunity. The Dolores, after all, is easily his favorite river in Colorado…
Provisions are still vague. Releases are indeed unpredictable, said Michael Preston, general manager of the Dolores Water Conservancy District. The Bureau of Reclamation factors in current reservoir levels with never-perfect forecasts. Then there’s juggling ever-increasing demand: Farmers combine for the largest allocation of the supply, recent spreadsheets show, followed by the downstream fishery, tribe and municipalities.
“McPhee is a hard-working reservoir,” Preston said. “We use every inch of our active storage capacity to take care of things.”
The height of that arch is reached at Snaggletooth, the legendary Class IV rapid aptly named. Swirling eddies are like mouths ready to inhale, the jumble of rocks like jaws ready to chomp.
From an embankment, we stopped to analyze the beast. And yes, [Christian] Wright was scared. “If someone says they’re not scared, don’t get in their boat,” he said.
FromThe Cortez Journal (Jim Mimiaga) via The Durango Herald:
A 10-day whitewater boating release is planned for the Dolores River below McPhee dam and reservoir, managers said this week.
The recreational water flows will be let out from Tuesday to May 30 and are scheduled to accommodate boaters over Memorial Day weekend.
“Timing the release early for the three-day holiday was a big interest for the boating community,” said Mike Preston, general manager for the Dolores Water Conservancy District.
Beginning Tuesday, the managed “spill” will increase at a rate of 400 cubic feet per second per day to achieve a 1,200 cfs flow by the morning of May 24. The high flow will be maintained through May 27, then ramp down to 800 cfs through noon May 30. A gradual ramp down over a few days will follow.
However, the managed release is expected to continue after May 30, but to what extent has not yet been determined, water officials said.
Winter snowpack that reached 140% of normal is enough to fill McPhee Reservoir and provide the boating release below the dam. Recent cooler and rainy weather in Southwest Colorado has slowed the snowpack runoff, creating uncertainty about the final timing…
The inflow rate will depend on hard-to-predict temperatures and potential rain in the coming weeks. McPhee is expected to reach full capacity by mid-June, said district engineer Ken Curtis, and all irrigators will get a full supply for the season…
The 97-mile stretch of the Dolores River below the dam from Bradfield Bridge to Bedrock is revered by boaters for its challenging rapids and remote, red-rock canyon wilderness.
The three- to five-day Slick Rock-to-Bedrock section through winding Slick Rock Canyon offers a pristine river running experience. The 18-mile, one-day Ponderosa Gorge has convenient access and fills with locals and tourists when the river runs. No permit is required to boat the Dolores River.
The expert Snaggletooth Rapid is especially notorious for drenching boaters and occasionally flipping boats. A road along the river accessed from Dove Creek is a popular spot to spend the day watching boaters negotiate the wild hydraulics created by the rapid’s “fangs.”
Also this week, temperature suppression flows of 100 cfs were released from the dam to benefit the downstream native fishery. The strategy is to delay the spawning of the bluehead and flannelmouth suckers and roundtail chub until after the whitewater release.
Aquatic biologist Jim White, of Colorado Parks and Wildlife, spoke at a community meeting in Dolores about planned fish surveys, population data and survey techniques.
Parks and Wildlife works with McPhee Reservoir managers to manage downstream flows for three native species that reside in the Lower Dolores – the roundtail chub, bluehead sucker and flannelmouth sucker. The first several miles below the dam to Bradfield Bridge is managed as a cold-water fishery for brown and rainbow trout.
“Roundtail populations have been good,” White said, “and bluehead and flannelmouth are not as abundant.”
The reservoir holds a 33,500 acre-foot reserve for the native fish needs. The “fish pool” is released gradually throughout the year base on biologists’ input. In the winter, flows below the dam are 20-30 cubic feet per second. During summer, they reach 60-80 cfs if there is no whitewater release.
During low water years, the fish pool and farmers share in shortages. When there is a recreation dam release like this year, it is not counted against the fish pool, and the higher flows are managed for ecological benefits such as channel scouring, timing to benefit the fish spawn, and flood plain sedimentation that replenishes nutrient rich sediment on the banks for new seedlings…
Fish counts and surveys are done each year at Slick Rock Canyon, Dove Creek Pump Station, Pyramid Mountain and below the San Miguel confluence.
White explained how a “pit-tag array” installed in 2013 to monitor native fish on the Lower Dolores River works. It is just upstream from the Disappointment Creek confluence.
Native fish captured throughout the Lower Dolores are inserted with a electronic tag, and when they move past the “array” wire above the river, the movement and fish identification is recorded.
So far, 1,421 fish have been tagged. Of those, 38 percent were flannelmouth suckers, 35 were roundtail chubs, and 23 percent were bluehead suckers. Four percent were smallmouth bass, a non-native species biologists are trying to get rid of because they prey on young native fish.
Since installed, 157 tagged fish have been recorded passing under the pit-tag array. In 2018, 14 fish were detected, including eight flannelmouth that arrived after April 8. Five of the flannelmouth were tagged in Slick Rock Canyon, two in the Pyramid Mountain Reach and one tagged in 2014 in the San Miguel River.
The first native fish of 2019 passed under the array on April 5. It was last detected on Oct. 18. On April 16, two flannelmouth were recorded.
The Bureau of Reclamation will host the 2019 operations meeting for the Dolores Project on Thursday, April 18, at 7 p.m. The meeting will be held at the Dolores Community Center, 400 Riverside Avenue in Dolores, Colorado.
“This meeting is a great opportunity for our partners and the public to find out how the 2019 water year is shaping up and to have any related questions answered,” said Western Colorado Area Office Manager Ed Warner.
Meeting topics will include a review of 2018 operations, projected water supplies and runoff for 2019 and the forecasted possibility of a boatable release to the Dolores River below McPhee Dam in 2019.
The meeting will also include presentations and representation from several agencies, including: Reclamation, Bureau of Land Management, United States Forest Service, Dolores Water Conservancy District, Colorado Parks and Wildlife, Dolores River Boating Advocates, American Whitewater and Fort Lewis College. There will be opportunities for questions, comments, and discussion during the meeting.
For more information, please contact Robert Stump at 970-565-7232 or firstname.lastname@example.org.
Narraguinnep and Groundhog reservoirs are at their lowest level in 16 years, said Brandon Johnson, general manager for the Montezuma Valley Irrigation Co.
The limited water supply caused a reduction in allocations for MVIC shareholders Thursday to 36 inches, or 3 acre-feet per share. Shareholders who have reached that allocation will be shut off on Friday…
During normal snowpack years, a full allocation is 48 inches, or 4 acre-feet per share…
Groundhog Reservoir has a capacity of 21,700 acre-feet, but is at 11,000 acre-feet right now, Johnson said. It is expected to be drawn down to the minimum level of 4,000 acre-feet that is required for the fish pool.
During normal years, Groundhog is kept at 13,000 acre-feet going into winter.
“It will take two to three years of normal winters to refill Groundhog,” Johnson said.
MVIC owns Groundhog and Narraguinnep and also has storage and water rights in McPhee Reservoir. MVIC officials are releasing water from Groundhog, via the Dolores River, into McPhee to be delivered into the MVIC canal system.
As a result, the Dolores River is running at 182 cubic feet per second, but 150 cfs of that is coming from the Groundhog Reservoir release.
The irrigation supply in McPhee Reservoir is also running low, but the system is still delivering water, said engineer Ken Curtis.
Farmers had shortages this year, and the season was reduced from the usual three cuttings of alfalfa to two cuttings for most farmers.
During average years, irrigation supply in McPhee is 240,000 acre-feet of water, but this year, only 150,000 acre-feet was available, or 60 percent of normal. And most of the supply was carried over from the previous above-average winter.
There will be no carryover going into next year’s water season.