The Fish Creek to Split Creek river run on the Lochsa River in Idaho can be a challenging Class III-IV+ whitewater experience. The run has several notable rapids, including Tumbleweed, Ten Pin, Grim Reaper, and Hammer Creek. The best time to float this section of water is typically in the spring or early summer when the water levels are higher. Recommended cfs levels for this run are between 5,000-10,000 cfs. It is important to note that this run is not recommended for beginners, and paddlers should have previous Class III whitewater experience before attempting it.