Colorado-Big Thompson Project update: Releases from Lake Granby to increase

A picture named granbyspill06222011

From email from Reclamation (Kara Lamb):

Recent rain storms and the tail end of snow melt run-off continue to produce high inflows into Lake Granby. As a result, we and Northern Water have been increasing releases from Granby Dam to the Colorado over the last few days. Today, releases are going up again, by about 300 cfs. We will soon be releasing upwards of 2200 cfs. The reservoir is just about full with only two and a half feet to go. Rain on the East Slope has reduced the need for diversions from the West Slope. As a result, more water must be released at the dam.

From email from Reclamation (Kara Lamb):

Just a quick heads up: late last night/early this morning, releases from Olympus Dam were scaled back by about 100 cfs. We are now releasing around 575 cfs from the dam to the lower Big Thompson River. Even though we have had some higher inflows from the recent storms, we are still capturing priority water (east slope run-off) in the C-BT project and using it to generate hydro-power and top off Horsetooth and Carter reservoirs. As a result, we have cut back diversions from the West Slope through the Adams Tunnel. With the tunnel low and the east slope water being taken through the system, we are able to reduce releases to the canyon a little bit.

More Colorado-Big Thompson Project coverage here.

Leave a Reply