This chart is for the gauge at the FM 2114 bridge. They list is as "near" Aquilla for some reason, though it has zero to do with Aquilla. Best I can tell, and I'm not very sure of this, the water released at the Whitney dam takes about 6 hours to reach this gauge, which is about 8.5 miles below the dam. The patter was, and now it's totally changed, but it was for a while low until about 5pm when it would start to rise. From that I'm guessing they were generating starting about 11am. I know the radio was reporting record electrical usage during that predictable time.
This weekend the river didn't come up at all, and yet it was pretty hot. I've called the COE and asked for a release schedule or even a few hints. They won't say anything about when they are going to release water. I expect that has some legal basis to it - as in if you are told when they will release water and if they release sooner than that and you get in trouble you might feel you can sue them. Or something, I don't really know.
All I know is that I've been trying to outguess the COE and have not been able to. I definitely am not psychic.