well, i'm glad i could find someone so close to home.
there are many great lakes down in our corner of idaho, closest to you is Ririe, which has good kokanie fishing if you can find them. other places i like are American Falls Reservoir, Twin Lakes Reservoir, Weston Reservoir, and Robert's Gravel Pond if you like lots and lots of smaller perch. all of these have good fishing when the water goes hard, and they're all within about 2 hours of you.