When I lived in Baker,Or. used to fish Brownlee pool on the Snake and the Powder river arm. I don't know what it's like now but there used to be large schools of Crappie, large yellow Perch, Bluegills, Sunfish, etc.. Usually took second place to Smallmouths and Rainbow Trout early and late in the year.
A couple of times caught Smallies on small flies fishing for crappie. Did catch a rather large yellow perch on a fly....quite a bit of fun. Didn't use anything exotic, just flies from the local sporting goods store. I knew of one gent who caught a small Channel Cat on a sinking fly....still had spots.
