The park service promotes the Current River as one of the midwest's best float streams, in part due to the contributions of some of the nation's largest springs. The headwaters of the Current River begin at the confluence of Pigeon Creek and Montauk Springs in Montauk State Park. Other notable springs along its course include Welch Spring, Cave Spring, Pulltite Spring, Round Spring, Fire Hydrant Spring, Ebb and Flow Spring, Blue Spring, Big Spring, and Gravel Spring. The park contains the United States' largest concentration of first magnitude springs (which are defined as having average flow of more than ) in dolomite rock. The only comparable spring collections are the limestone springs of North Florida near Gainesville and the igneous-based springs of Idaho's Snake River.