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Western Colorado Area Office

Project Notices

Aspinall Unit
Crystal Reservoir Releases - Revised
September 16, 2013

The Bureau of Reclamation will be decreasing the release from Crystal Reservoir by 100 cubic feet per second (cfs) from 1,250 cfs to 1,150 cfs on Monday, September 16th at 9:00 a.m. Diversions into the Gunnison Tunnel will be reduced by 100 cfs at this same time. Releases at Crystal Reservoir are being reduced to maintain flows in the Gunnison River through the Black Canyon.

As of today the Gunnison Tunnel is diverting around 800 cfs and flows in the Gunnison River through the Black Canyon are around 450 cfs. After the change on Monday, the Gunnison Tunnel will be diverting around 700 cfs and flows in the Black Canyon will still be around 450 cfs. Current flow information is obtained from provisional data that may undergo revision subsequent to review.

The final release rate of 1,150 cfs at Crystal Reservoir will be maintained until further notice.

Pursuant to the Aspinall Unit Operations Record of Decision (ROD), the flow target in the lower Gunnison River, as measured at the Whitewater gage, is 890 cfs for August and September.

Actual unregulated inflow to Blue Mesa Reservoir was 346,000 af between April and July. This is 51% of the 30 year average.

This scheduled release change is subject to changes in river flows and weather conditions.

For questions or concerns regarding these operations contact:

Erik Knight at (970) 248-0629 or e-mail at eknight@usbr.gov
Dan Crabtree at (970) 248-0652 or e-mail at dcrabtree@usbr.gov