Maximum discharge along the river was observed at the Applegate River Near Copper with a streamflow rate of 225 cfs. However, the deepest point on the river is located at the Applegate River Near Wilderville reporting a gauge stage of 2.18 ft. This river is monitored from 3 different streamgauging stations along the Applegate River, the highest being perched at an elevation of 1,768 ft, the Applegate River Near Copper.