Greater Platte River Basins map showing project location

Map showing the GPRB, northern portion of the High Plains aquifer, and general areas targeted for study: (1) South Platte River corridor, (2) Niobrara National Scenic River and Eolian sediments, which cover much of the GPRB although only the Nebraska Sand Hills are shown here. (Base map taken from Thormodsgard, J.M., 2009, Greater Platte River Basins—Science to sustain ecosystems and communities: U.S. Geological Survey Fact Sheet 2009-3097, 6 p.)