http://www.usbr.gov/uc/wcao/water/rs.../amcurrnt.html

Flows in the Black Canyon and Gunnison Gorge should remain above 3,000 cfs well into July with flows in the 1,000-1,500 cfs range in late summer and fall.

Under most probable conditions, a spill at Crystal is likely to occur. The timing of the spill is dependent on runoff timing and whether a decision is made to "force" a spill earlier than would occur naturally. Past runoff patterns were displayed on graphs showing that in addition to inflow quantity, weather patterns can greatly influence timing and magnitude of streamflows. If a spill is not "forced" the spill would likely occur in late June. During a spill, flows could increase to 4,000-7,000 cfs in the Black Canyon.




So much for wading, although it does mean more water for the fish. If they can time it right, anyway.