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Willow Creek Reservoir


Fall at Willow Creek Reservoir

Willow Creek Reservoir, Lake Granby, Shadow Mountain Reservoir and Grand Lake, function as a water savings account for the Northern Colorado Water Conservancy District's West Slope collection system.

Willow Creek Reservoir captures snowmelt runoff within the Willow Creek basin. The water is pumped to Lake Granby for delivery through the C-BT system.

Willow Creek, a tributary of the Colorado River, diverts an annual average flow of 30,000 acre feet to Lake Granby.

Willow Creek Reservoir, dam, pump plant and supply canal were all built between 1951 and 1953, the last major construction phase of the C-BT's West Slope system.

The pump plant at Willow Creek lifts water 175 feet to the Willow Creek Supply Canal, where it flows 1/4 mile into Lake Granby. The pump plant was designed to be operated on site, or remotely from the Farr Pump Plant.

Willow Creek Reservoir by the Numbers
Map of Willow Creek Reservoir