#Colorado #snowpack, reservoir levels strong, despite dry January — @WaterEdCO

From Water Education Colorado (Jerd Smith):

Colorado snowpack is registering well above normal across the state, and reservoirs are plenty full, a situation water managers say bodes well for this year’s water supply, assuming that spring snows materialize as they normally do.

“We’ve been shut out [in terms of snowfall] on the Front Range and Eastern Plains,” said Peter Goble, climate specialist at Colorado State University’s Colorado Climate Center. “But January is normally our dry season. If there is a good time to be shut out, it’s now.”

Even with a dry January, statewide snowpack is measuring at 110 percent of average. Snowpack along the Front Range is registering at 111 percent in the South Platte River Basin and 112 percent in the Arkansas Basin.

Colorado snowpack basin-filled map January 27, 2020 via the NRCS.

Consistent high mountain snows are helping keep ultra-dry conditions at bay, Goble said at a meeting of the state’s Water Availability Task Force on Jan. 23 in Denver.

Reservoir levels are also holding strong, with stored water statewide measuring at 106 percent of average. The same time last year that number was just 81 percent.

Looking ahead to the warm spring months, Goble said he had some concerns that forecasts called for an essentially equal chance of wet or dry weather.

Southern Colorado and the Eastern Plains have been hit particularly hard by chronic drought conditions over the past eight years, and weather watchers expressed concern that these regions will suffer if the spring turns out to be warmer and drier than normal.

Still, Karl Wetlaufer, assistant snow survey supervisor for the Natural Resources Conservation Service, said mountain snows are remarkably healthy and consistent across the state.

Snow levels in each of the major river basins are above average and nearly equivalent. The Yampa River Basin, in northwestern Colorado, stands at 114 percent of average this week, while the upper Rio Grande is measuring at 110 percent of average.

Snowpack is closely watched across Colorado because every region in the state relies on melting mountain snows for the majority of their water supplies.

Each month, until May, the snowpack is measured and runoff forecasts are made so that water managers can plan for the year.

Though Colorado left a severe drought behind last spring, after a winter of spectacularly deep snows, a dry fall pushed large swaths of the state back into drought, according to the U.S. Drought Monitor.

Now just under half of the state, largely the southern portion, is classified as being in moderate or severe drought.

Still, if the spring turns out to be dry, forecasts indicate snowpack will likely be in the 85 percent of average range at their peak in mid-April. But if spring storms bring plentiful snow, that number could easily soar above 115 percent of average. And even that may be conservative.

“We could see something really wacky happen that will bring us well above even this current forecast,” Goble said.

Jerd Smith is editor of Fresh Water News. She can be reached at 720-398-6474, via email at jerd@wateredco.org or @jerd_smith.

Westwide SNOTEL basin-filled map via the NRCS.

From The Montrose Press (Katharhynn Heidelberg):

Water managers are cautiously optimistic about the current snowpack and predicted runoff, even though the overall picture right now points to a moderate-dry year for the Gunnison Basin.

“I feel like we’re in pretty good shape. Of course, you can’t have too much snow. It’s like having too much fun,” said Steve Anderson, manager for the Uncompahgre Valley Water Users Association.

“But we’ve got full reservoir accounts. It’s kind of amazing, but we’re almost exactly where we were a year ago at this time. If we can have what we had last February, March and April, we would be in really good shape, but we could settle for less and still be in good shape.”

Within the Bureau of Reclamation’s Aspinall Unit, the snow-water equivalent was 110 percent of normal for this time of the year, as of Monday, BuRec hydrologist Erik Knight said…

According to the runoff forecast as of Jan. 1, Blue Mesa’s inflow was close to 87 percent of average, at 590,000 acre feet. Ridgway and Taylor Park each were sitting comfortably at 86 percent of average.

“With mid-January at 590,000 acre feet, that just puts us in that average-dry category. That is based on historic numbers. We consider ourselves to be in an average-dry year,” Knight said. “It’s got the opportunity to go any direction so far.”

[…]

The drought monitor shows moderate drought, with pockets of severe drought as of mid-month, although compared with the situation at the same time last year, that is an improvement.

Precipitation-wise, Montrose was sitting a bit below average just prior to Monday’s surprise storm, according to the National Weather Service.

For the month of January, Montrose had measured 0.28 inches; usually, it is 0.56. The tally did not include precip from Monday’s snow dump, which as of 6 a.m. that day, was about 1.5 inches — 18-hundredths of an inch liquid equivalent.

Anderson also said statewide efforts continue to update the Colorado Water Plan, slated for completion in 2023, and to fully fund its implementation.

Voters last November passed Proposition DD, establishing a 10-percent tax on net proceeds from sports betting, to help pay for implementation…

He also invited water users to UVWUA’s annual board meeting, set to begin at noon Feb. 4, at Bill Heddles Recreation Center in Delta. Keynote speakers include Greg Peterson of the Colorado Ag Water Alliance and Jim Pokrandt of the Colorado River District.

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