Colorado-Big Thompson Project update: 400 cfs in the Big Thompson below Olympus Dam

A picture named olympusdamrelease062011

A picture named granbyreservoirreleases062011

From email from Reclamation (Kara Lamb):

You’ve probably noticed that throughout the weekend and for the last several days, we’ve been decreasing releases from Olympus Dam to the Big Thompson River. This is because we have been receiving a little more “priority water” into the Colorado-Big Thompson system.

When our junior east slope water rights, priority water, come into play for the C-BT, we decrease, or even turn off, imports from the west slope and collect the east slope run-off at Olympus Dam. So, instead of sending it all over the dam, we run it through our power generation system and deposit it into Horsetooth Reservoir. As a result, the release from Olympus to the Big Thompson has dropped to about 400 cfs…

Tonight [June 14], we’ll drop it again to about 375 cfs.

From email from Reclamation (Kara Lamb):

Just a quick update on what we are releasing from the collection system of the Colorado-Big Thompson Project.

We are up to about 773 cfs from Granby Dam. About 343 cfs is coming over the spillway; the 430 cfs is still being released through the dam.

But we have seen inflows to both Willow Creek and Shadow Mountain drop off in the last 24 hours. Willow Creek has dropped to about 954 cfs. Shadow Mountain is now releasing 2150 cfs.

Click on the thumbnail graphics above for screen shots of Ms. Lamb’s photos of the Olympus and Granby releases from this week.

More Colorado-Big Thompson Project coverage here.

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