From email from Reclamation (Erik Knight):
Our pattern of good fortune continues. Late season snowmelt in combination with the early season monsoon rains has kept inflows from receding as previously (and continuously predicted). Blue Mesa Reservoir continues to rise at 0.5 feet per day and is now at an elevation of 7518.35 feet. While inflows are expected to recede in the next few days as the monsoon rains take a brief hiatus, the current rate of fill would have Blue Mesa Reservoir spilling within 3 days. Therefore in keeping with the theme of always receiving more inflow than expected, releases from Crystal Dam will be increased by a total of 400 cfs over the next 2 days. This increase will be done in 200 cfs increments, one on Wednesday, July 13th in the early evening, and one early Thursday morning, July 14th. This should preserve the safety of any potential visitors to the canyon and provide all aquatic creatures with sufficient time to become reacquainted with these higher flows. Flows in the Gunnison River through the Black Canyon are expected to increase from 2550 cfs to around 2950 cfs by Thursday, July 14th.
More Aspinall Unit coverage here.