Managing Lake Powell’s power pool, will it benefit from the current snowpack? #ColoradoRiver

Glen Canyon Dam -- Photo / Brad Udall
Glen Canyon Dam — Photo / Brad Udall

From The Grand Junction Daily Sentinel (Gary Harmon):

Federal officials fretted for a year that they might have to take action as the water level in Lake Powell fell perilously close to the point that Glen Canyon Dam couldn’t generate electricity. Those fears were staved off, but not eliminated, after a meeting on Friday that involved top officials from the Interior Department and Bureau of Reclamation, according to Colorado officials who attended the meeting.

“They’ve been concerned since last year” when federal officials began modeling flows into Lake Powell and concluded that two dry years similar to 2012 and 2013 could threaten the intakes into the electricity-generating turbines, said Upper Colorado River Basin Commissioner John McClow on Wednesday.

“They’re nervous now,” said Eric Kuhn, general manager of the Colorado River Water Conservation District, “Six months ago, they were more nervous.”

Snowpack of 110 percent of average or more so far this year in the Colorado mountains has alleviated much of the immediate concern, McClow said.

“We’ve gotten a reprieve this year, but we’re still working” on plans that would forestall any need for federal involvement in river management beyond the bureau’s existing role, McClow said.

What expanded federal involvement might mean is unclear, but Mesa County Commissioner Steve Acquafresca, who represents the county on the Colorado River Water Conservation District board, said it’s extensive.

The issue isn’t whether the upper Colorado River is delivering enough water to meet the requirements of a 1922 compact among the seven basin states, but whether the water level in Powell is high enough to allow electricity generation.

“They’re talking about taking over management of the river if the power intakes (in Lake Powell) start sucking air,” Acquafresca said. “They’re not going to let that happen. You can’t start to develop a vortex in the reservoir.”

That vastly overstates the authority of the Bureau of Reclamation, said Larry Walkoviak, director for the bureau’s upper Colorado region.

“Each state has its own set of laws and we have to comport with those states’ water laws,” Walkoviak said. As the federal manager of the bureau’s dams and other facilities upstream from Glen Canyon, “I don’t have the authority to do something like that.”

The secretary of the Interior is the water master for the river below Glen Canyon, he noted, but not above.

Even at 39 percent full, the level of Lake Powell remains about 85 feet above the penstocks that feed the turbines in Glen Canyon Dam, so it seems that for the coming summer and probably more, the issue of electricity generation is likely moot, Walkoviak said.

Walkoviak was present at the meeting on Friday in Washington, D.C., that included Mike Connor, deputy secretary of the Interior; Anne Castle, assistant secretary for water and science; McClow; Kuhn; and James Eklund, director of the Colorado Water Conservation Board.

Eklund, Kuhn and McClow all stressed the significance of Colorado officials having contingency plans for low water levels in Powell at the ready when they met with the federal officials.

A three-party, state-developed contingency plan allayed much of the federal fear, McClow said.

“The bureau has given us every indication that it intends to work with us,” Eklund said

That plan calls for releasing more water than would otherwise be the case from the Aspinall Unit of dams on the Gunnison River, as well as Navajo Lake and Flaming Gorge; voluntary, compensated release of water rights by some users; and continued work to augment existing supplies.

The plan includes provisions for endangered species and for recreation and other uses, McClow said.

More Colorado River Basin coverage here.

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