Maximum discharge on the river today is recorded at the Greenbrier River At Hilldale with a streamflow rate of 3,640 cfs. However, the deepest point on the river is located at the Greenbrier River At Alderson reporting a gauge stage of 4.46 ft. This river is monitored from 4 different streamgauging stations along the Greenbrier River, the first of which is perched at an elevation of 2,729 ft, the Greenbrier River At Durbin .