Hydrogeomorphic segments and hydraulic microhabitats of the Niobrara River, Nebraska : with special emphasis on the Niobrara National Scenic River / by Jason S. Alexander, Ronald B. Zelt, and Nathan J. Schaepe ; prepared in cooperation with the Nebraska Game and Parks Commission.
Publication Info.
Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2010.