Maximum discharge on the river today is recorded at the Blue River Below Green Mountain Reservoir with a streamflow rate of 656 cfs. However, the deepest point on the river is located at the Blue River At Blue Ridge Blvd Ext In Kc reporting a gauge stage of 25.55 ft. This river is monitored from 15 different streamgauging stations along the Blue River, the first of which is perched at an elevation of 9,842 ft, the Blue River At Blue River .