A local lake here got over run with squaw fish. This lake was famous for producing large trout, because it had a large perch population. The squaw fish wiped out the perch and the trout population crashed. A few years ago, the fish and game went into a couple of the feeder creeks while the squaw fish were spawning and wound up removing like 80,000 of them or something like that with gill nets. They found it really put a dent in the squaw fish population, and was pretty easy for them to do. Solved a problem that had been ongoing for years. While that has nothing to do with Salmon or Steelhead, it would seem they could do the same thing there ?