Monday, February 28, 2011

Welcome to the 2011 Runoff Update

The warm-weather runoff season can (at times quickly) cause changes in reservoir elevations, river flows and the way the Colorado-Big Thompson and Windy Gap projects run.

Northern Water will provide regular updates here throughout the spring and summer months as important changes in conditions happen.

Friday, February 25, 2011

Background: Willow Creek Reservoir


Willow Creek Reservoir captures runoff within the Willow Creek Basin. The water from Willow Creek, a tributary of the Colorado River, is pumped to Lake Granby for delivery through the Colorado-Big Thompson Project.

Willow Creek Reservoir and its dam, pump plant and supply canal were built between 1951 and 1953.

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.

Background: Lake Granby

Lake Granby is the largest storage reservoir in the C-BT Project. It is located on the Colorado River about 4 1/2 miles northeast of Granby.

Water is pumped from the Farr Pump Plant at the north end of Lake Granby to Shadow Mountain Reservoir through the Granby Pump Canal. Pump head elevations vary depending upon the reservoir's surface elevation.

The first water storage at Lake Granby began on Sept. 14, 1949.