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That is a wide spectrum. Trout or Steelhead? The Caddis Fly shop in Eugene has a nice web site with a nice Mckenzie collection and I think Steelhead as well. I would not be without Prince Nymph, Peasant tail, lots of caddis and Stone fly, some soft hackles, and emergers. For Steelhead;Green But Skunk, Brads Brat, Purple Peril, and the list goes on........Good Luck! You have some great water to explore.
mitch at two rivers fly shop ties a nymph for the Metolius,I believe it called a hares ear 100,that has been deadly for me.