Maximum discharge along the river was observed at the Stillwater River Near Absarokee Mt with a streamflow rate of 395 cfs. However, the deepest point on the river is located at the Stillwater River Near Sterling reporting a gauge stage of 4.03 ft. This river is monitored from 4 different streamgauging stations along the Stillwater River, the highest being perched at an elevation of 3,880 ft, the Stillwater River Near Absarokee Mt.