Overnight stop between Twin Falls and Salt Lake area

If you don't need hook-ups, American Falls. Exit 40 I-86, take Rt. 39 thru town towards Aberdeen. On the right just after going across the bridge is the Bureau of Reclamation bldg. There is a huge driveway on the north side of building that goes into a huge grael lot. Picnic tables. 14 day free. Nice and level. We usually do several nights there and there is a boat ramp.