Another Idahoan here. Agreed. The outdoors here is very valued. Idaho also has a lot of hydroelectric generation which I think also counts are renewable?
There is a reason that the big sandy beaches seen around highway 12 around McCall and Riggins are fairly rare in Idaho now.
Negative effects can be mitigated if the plant is designed to take them in to account. Be it not changing flows and levels except very slowly to avoid stranding fish, keeping some water flowing past the intake structure to keep sediment moving, creating fish ladders, fish spawning channels, etc.
Hydro is really one of the least bad energy sources if you have to pick one.