I remember a while back, that the campground at the spillway was open after "peak" camping season. I'd call the CORPS office and ask (270) 646-2055. Office hours: M-F, 6:30 a.m. - 4 p.m. (Central) (may vary, call ahead). From what I remember, this was a primitive deal, out houses, water and that's about it. I'm not sure about electricity. It's about as close as you can get to Port Oliver too.