Runoff news: Dillon Reservoir is spilling

Denver Water employees Rick Geise and Nate Hurlbut assisted in setting the plug, which helps prevent chunks of ice and snow from falling into the spillway. Photo credit: Denver Water

From the Sky-Hi Daily News (Julie Sutor):

Water from Dillon Reservoir began flowing through the morning glory spillway into the Lower Blue River at 5 a.m. Tuesday. Water spills through the “glory hole” when the reservoir’s water level reaches its full elevation of 9,017 feet. Water also flows through the waterworks and into the Blue River from the bottom of the dam. The spillway ensures water never flows over the top of the dam. Outflows into the Lower Blue reached 235 cubic feet per second (cfs) Tuesday, with 220 of that coming from the bottom of the dam. As the snowpack continues to melt, the percentage of water coming from the top of the reservoir, via the spillway, will increase. Outflows into the Lower Blue are forecast to peak at 1,100 cfs on June 9. Inflows are forecast to peak at 1,300 cfs on June 9.

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