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Lake Granby  Lake Granby is the largest storage reservoir in the C-BT system and the second largest in the state. Only Blue Mesa in southwestern Colorado is larger. Lake Granby is located on the Colorado River approximately 4 1/2 miles northeast of the town of Granby. Construction of the dam and reservoir, which cost $12.9 million, had to be completed before water could be delivered through the Alva B. Adams Tunnel. The Granby Dam and dikes are earth and rock-fill structures. Water is pumped from the Farr Pumping Plant at the north end of Lake Granby to Shadow Mountain Reservoir through the Granby Pump Canal. Pump head elevations vary from a minimum of 92 feet to a maximum of 186 feet depending upon the reservoir's surface elevation. The first water storage at Lake Granby began on Sept. 14, 1949. The Granby Pumping Plant (later re-named the Farr Pumping Plant) was completed the same year, and testing was conducted during the spring and summer of 1951. The Bureau of Reclamation dedicated the plant in July 1951. Lake Granby by the Numbers Map of Lake Granby |
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