Apple Gate

Green Mountain Reservoir

Publication Date: 
December, 2009
Green Mountain Reservoir is located on the Blue River approximately twelve miles southeast of Kremmling. Constructed between 1938 and 1943 by the Bureau of Reclamation, the reservoir provides compensatory storage to West Slope residents for water that is diverted to the East Slope via the Colorado‐Big Thompson Project (C‐BT Project). Green Mountain reservoir, dam, and power plant were the first C‐BT Project features to be constructed. Green Mountain Power Plant was the first power unit of the C‐BT Project to produce electricity. It began power production in May 1943. It is one of six power plants ‐ the only one on the West Slope ‐ in the Colorado‐Big Thompson Project.