The Gorge increase in outflow is not close to the increase in Powell inflow.
It would be interesting to see what the lake levels have been in the past this time of year. I know there are a few of the larger lakes that are releasing water early in anticipation of the runoff. McPhee reservoir which is the 2nd largest in Colorado is over 90%. They are releasing earlier than ever before. The Delores river is going to have great boating for an extend period which hasn't happened for a long time.Flaming Gorge is releasing 8900 CFS, which is just less than 1/2 the inflow to Lake Powell Right now. I would say it is THE main reason inflows are still so high, even with the cooler temperatures slowing down runoff.