Columbia river water levels or spillway schedule

[Luna butte]

So yesterday me n my son put out 4 colony traps in a lake controlled by the John day dam, I had to work in the area today so I took the opportunity to check these four out. I found that I had four traps n four Mrats. Cept the dam had started spilling water overnight and lowered the water level about 10”. Two of my colony traps had the top two inches out of the water with a drowned rat in each of them. So my question is, is there a set schedule that I can find on the internet that would tell me when the dam plans on spilling water?

[huntingfool7]

There is no set schedule for dam releases.