From email from reclamation (Dan Crabtree):
On Monday October 4th, flows in the Black Canyon and Gunnison Gorge will be increased temporarily to accommodate the Colorado Division of Wildlife’s trout census. Due to the equipment and procedures necessary for the work, the preferable flow is 800 cfs. Therefore, releases will be increased 200 cfs starting at 6:00 a.m. on Monday, October 4th and will remain at that level until Thursday, October 7th when they will return to 600 cfs. Flows in the Gunnison Gorge and Black Canyon will then remain at 600 cfs through the following week at which time another reduction will likely take place. Expect another notification prior to this mid-October reduction.
More Aspinall Unit coverage here.