Windy Gap Project

The Windy Gap Project consists of a diversion dam on the Colorado River, a 445-acre-foot reservoir, a pumping plant, and a six-mile pipeline to Lake Granby. Windy Gap water is pumped and stored in Lake Granby before it is delivered to water users via the Colorado-Big Thompson Project’s East Slope distribution system.

Six Colorado Front Range communities formed the Northern Water Municipal Subdistrict in July 1970 to plan, finance, build and operate the Windy Gap Project to provide additional water for future needs. The Windy Gap Watchable Wildlife Area has information kiosks, interpretive panels and viewing scopes along a handicapped-accessible nature trail.

Windy Gap ReservoirWindy Gap Reservoir Windy Gap Reservoir is located just west of the town of Granby on Colorado's West Slope.

C-BT & Windy Gap Project Statistics
Windy Gap Project Map
Water Systems Map


How the Windy Gap Project Works

Learn about Windy Gap Project operations, the Windy Gap Project Watchable Wildlife Area and the proposed Windy Gap Firming Project. Learn more»

Windy Gap History

In 1970, six Northern Colorado cities formed the Municipal Subdistrict to plan, finance and build the Windy Gap Project, which was completed in 1985. Learn more»