Green Mountain Reservoir

Green Mountain Reservoir Green Mountain Reservoir lies at the northern end of Summit County, Colorado along the Blue River. The reservoir has a capacity of 153,000 acre feet of water.

The Green Mountain Dam was built between 1938 and 1942 by the United States Bureau of Reclamation. The reservoir and its dam store water to benefit Colorado's Western Slope. Created by President Roosevelt as part of the Colorado-Big Thompson Project in 1937, Green Mountain was the first facility to be constructed. This is because it represents a great compromise that made the C-BT project possible

: it compensates the Western Slope for water diverted to cities in Northern Colorado from Granby Reservoir further upstream on the Colorado River. Water from Green Mountain Dam is released either over the spillway, through the dam, or through the hydroelectric powerplant at the dam's base. The Green Mountain Power Plant has the capacity to generate up to 21,000 kilowatts, using two generators. Combined with the other five Federal power plants on the C-BT, enough electricity is produced annually to power almost 60,000 American homes. At maximum capacity, the elevation of the lake is 7,950 feet, and the dam is 309 feet high.


Silverthorne, CO


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