Maximum discharge on the river today is recorded at the Sandy River Blw Bull Run River with a streamflow rate of 2,430 cfs. However, the deepest point on the river is located at the Sandy River Near Marmot reporting a gauge stage of 692.06 ft. This river is monitored from 4 different streamgauging stations along the Sandy River, the first of which is perched at an elevation of 735 ft, the Sandy River Near Marmot .