Bureau of Reclamation Banner, Upper Colorado Region

Western Colorado Area Office

Project Notices

Aspinall Unit
Crystal Reservoir Releases - Revised
April 30, 2015

Releases from Crystal Dam will be increased from 1250 cfs to 1450 cfs on Thursday, April 30th at 9:00 AM.  This release increase is in response to an increase in diversion to the Gunnison Tunnel. The current forecast for April-July unregulated inflow to Blue Mesa Reservoir is 450,000 acre-feet which is 67% of average.

Flows in the lower Gunnison River are currently above the baseflow target of 890 cfs. River flows are expected to stay above the baseflow target for the foreseeable future. 

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

Currently, diversions into the Gunnison Tunnel are 900 cfs and flows in the Gunnison River through the Black Canyon are around 350 cfs. After this release change Gunnison Tunnel diversions should be around 1100 cfs and flows in the Gunnison River through the Black Canyon should be around 350 cfs. Current flow information is obtained from provisional data that may undergo revision subsequent to review.

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
Ryan Christianson at (970) 248-0652 or e-mail at rchristianson@usbr.gov