From email from Reclamation (Erik Knight):
Releases from the Aspinall Unit will be decreased from 1400 cfs to 1050 cfs on Wednesday, October 4th. 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 700 cfs and flows in the Gunnison River through the Black Canyon are around 700 cfs. After this release change Gunnison Tunnel diversions will still be 700 cfs and flows in the Gunnison River through the Black Canyon will be near 350 cfs. River flows will increase next week as part of a flow request for the trout fishery survey in the Gunnison Gorge. Current flow information is obtained from provisional data that may undergo revision subsequent to review.