From email from Reclamation (Erik Knight):
Releases from the Aspinall Unit will be decreased from 850 cfs to 350 cfs on Tuesday, November 14th. Releases are being decreased in response to the end of irrigation diversions to the Gunnison Tunnel. The Gunnison Tunnel will be shut down on November 14th.
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 November and December.
Currently, Gunnison Tunnel diversions are 500 cfs and flows in the Gunnison River through the Black Canyon are around 320 cfs. After this release change Gunnison Tunnel diversions will be 0 cfs and flows in the Gunnison River through the Black Canyon will still be near 320 cfs. Current flow information is obtained from provisional data that may undergo revision subsequent to review.