Aspinall Project Notices
BUREAU OF RECLAMATION
ASPINALL UNIT OPERATIONS UPDATE
October 17, 2023
Releases from the Aspinall Unit will be decreased from 1150 cfs to 1100 cfs on Wednesday, October 18th. Releases are being decreased in response to declining inflow forecasts for the Aspinall Unit.
Flows in the lower Gunnison River are currently above the baseflow target of 1050 cfs. River flows are expected to remain 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, will be 1050 cfs for October through December.
Currently, Gunnison Tunnel diversions are 825 cfs and flows in the Gunnison River through the Black Canyon are around 400 cfs. After this release change Gunnison Tunnel diversions will still be 825 cfs and flows in the Gunnison River through the Black Canyon will be near 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, e-mail firstname.lastname@example.org
Please contact the Operations Group via e-mail at ResourceMgr@usbr.gov for additional information.