If you have a raft, tube, or toon...try the Kiger Island slough. It's also called, the Westfork Booneville Channel. Go south on Hwy. 99. Take the 1st left, past Rivergreen Ave. That puts you onto, Kiger Island Dr. In short odor, you'll come to a bridge. That's the slough, on the right. And it's drainage creek, on the left, that flows into the Willy. Bucketmouths, in the slough. And Smallies on the other side. You can fish the drainage side, from the rip rap along the bank.
P.S. There is also the Long Tom River, further south. It has all kinds of warmwater species.