Camp 9 flows

Been keeping a close eye on the flows as I plan to make the 4-hour drive this weekend for the first time...The flows seem to be very erratic, jumping from 400-1500-700-2000, etc.

I know there's 2 powerstations there so my question is...Do the flows fluctuate that significantly in the stream(s) above the powerstations?

I can't imagine they do, but if anyone is willing to give me any insight before I make the long haul, it would be awesome...PM is welcome if you want to be discreet about it
Thanks