Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Nolin River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Nolin River, the highest being situated at an altitude of ft, the .
Nolin River Lake is a reservoir in Edmonson, Grayson, and Hart counties in Kentucky. It was impounded from the Nolin River by the United States Army Corps of Engineers in 1963. The Nolin River dam was authorized in 1938 as part of a flood control act. The lake varies from 2,890 acres (11.7 km²) in the winter to 5,795 acres (23.5 km²) in the summer.
Nearby attractions include Mammoth Cave National Park, Nolin Lake State Park, Moutardier Resort and Marina, Ponderosa Boat Dock/Marina and Wax Marina.