Some kind of fish capture system has to be designed just above the dam for successful outward migration. Fish separation designs are location specific and are very expensive. Most are designed for smolt capture to safely divert them around the dam. The Columbia/Snake rivers have capture systems for both smolt and the adult Steelhead leaving after spawning. Seems unproductive to release any fish on the Wynoochee above the dam if they can't be collected and safely released around it. Super high mortality rate just flushing them through the base of dams.