I'm always looking for a good catfishing spot, but I'm in Spokane. Hear things about Yakima River, suspect lower portion. Caught a few at Lyons Ferry. Caught a 19 lb cat out of Sprague lake before they Rotenoned it. Problem with Snake and Columbia is the eating part. Don't think I would eat anything out of those rivers. Caught a bunch out of Brownlee ? spelling in between Oregon and Idaho many years ago. Here there are some in Moses lake too, but I've never targeted those ones. Might be an I-82 pond that has some catfish.