As we know on Mt. Hood, "it's all about the fish". There's recent controversy over the wild and hatchery fish coming up stream after the removal of the Marmot Dam in 2007 (see video)

and their spawning grounds intermingling. These spawning grounds would be in our local Zig Zag River and Sandy River. The Sandy River Hatchery recently received approval from the Feds to run their program. I am by no means an expert on fish. I do my fishing at the local Trout Farm. Here is a recent article explaining the issues.