Lake Powell, which is filled to just over a quarter of its capacity, could soon see its level drop below the critical elevation where the Glen Canyon Dam stops being able to generate power, even after this week’s storms.
Lake Powell could soon see its level drop below the critical elevation where the Glen Canyon Dam stops being able to generate power.
The dam’s hydroelectric intakes are at 3,470 feet above sea level, but as the reservoir level drops below 3,525 feet the risk of equipment damage increases due to the possibility of air passing through the turbines.“Part of the reason that 3,525 is critical,” said Gene Shawcroft, chair of Utah’s Colorado River Authority, “is because ... the hydropower generated from Glen Canyon is absolutely crucial from the energy supply standpoint. There are a lot of people that rely on that power.
“If we conserve a little bit across all seven states,” he said, “if all Colorado River water users pitch in a little bit — it’s going to make a big difference.”Crystal Tulley-Cordova, a principal hydrologist for the Navajo Nation Department of Water Resources, said the drought has hit the Navajo Nation particularly hard, increasing food and water insecurity in a region where over a third of households are not connected to running water.
But Tulley-Cordova said increased construction costs related to the pandemic and other factors have delayed some construction projects, and that there is still a long road ahead. The ultimate goal of water managers, according to Weisheit and Silver, should be to “balance the water budget” by immediately reducing consumptive water use in the basin by 20%. Temporarily tweaking release schedules from Lake Powell, the letter said, will not solve the underlying issue that the basin states are using more water than is actually available in the river.
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