Colorado River Headwaters Byway
Farr Pumping Plant and Colorado-Big Thompson Project, CO

The Colorado-Big Thompson Project (C-BT) takes water from Grand Lake to the east side of the Continental Divide. C-BT is the largest trans-mountain diversion project ever built. Completed in 1951, Farr Pumping Plant is the heart of C-BT and the center of the West Slope collection system. The plant pumps water from Lake Granby into Shadow Mountain Reservoir via the Granby Pump Canal and then into Grand Lake, where the water travels to the Eastern Slope via the Adams Tunnel.