From email from Reclamation (Erik Knight):
Releases from Crystal Dam will be reduced from 1600 cfs to 1450 cfs on Wednesday, September 3rd at 1:00 PM. Flows in the lower Gunnison River are currently above the baseflow target of 1050 cfs. River flows have remained relatively high due to the August rains and flows are expected to stay above the September baseflow target at the new rate of release.
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 1050 cfs for September.
Currently, diversions into the Gunnison Tunnel are around 1050 cfs and flows in the Gunnison River through the Black Canyon are around 600 cfs. After this release change Gunnison Tunnel diversions will still be around 1050 cfs and flows in the Gunnison River through the Black Canyon should be around 450 cfs. Current flow information is obtained from provisional data that may undergo revision subsequent to review.