Water-quality characteristics and trend analyses for the Tongue, Powder, Cheyenne, and Belle Fourche River drainage basins, Wyoming and Montana, for selected periods, water years 1991 through 2010 / by Melanie L. Clark ; prepared in cooperation with the Wyoming Department of Environmental Quality.
Publication Info.
Reston, Virginia : U.S. Department of Interior, U.S. Geological Survey, 2012.