What your describing is barging smolt around all the dams.
And those studies that are trying to say interaction of wild and hatchery stocks actually help wild fish is right out of the jackwagon play book.
Hatchery breeding with wild = nothing returns.
The Snake River once represented 50% of the salmon and steelhead produced in the Columbia Basin, the four lower Snake River Dams block over 70% of the original spawning habitat on the Snake River.