Are there any waters in southeast Idaho that have catch able cats in them?
Fish the Snake River and the upper end of Brownlee Reservoir. The area below Swan Falls Dam, Fort Boise (mouth of the Boise River), Steck Park (near Weiser) are all popular locations for catfish anglers. If you want to fish in reservoirs, Lake Lowell near Nampa is a good option along with C.J. Strike (Bruneau), and Milner Reservoir (Burley) are also locations with good catfish fishing.