My guess is that average hourly discharge is the per hour discharge in cfs while the average outflow is the average over a 24 hr peroid. If you look at the previous 48 hrs of discharge, the value jumps up to 3800 cfs at times when the generator is on. So if you have 16 hours of 100 cfs and 8 hours of 2000-3000 cfs, that would average out to about 700-800 cfs per hour over the 24 hr day.
For fishing trip planning purposes, the hourly discharge is what you need to pay attention to.
I feel bad for people who don't hunt and fish. They never get to experience God's creation the way we do.
SUMKINA Bait Company Prostaff