A Digital Hydrologic Network Supporting NAWQA MRB SPARROW Modeling--MRB_E2RF1
A digital hydrologic network was developed to support SPAtially Referenced Regression on Watershed attributes (SPARROW) 
models within selected regions of the United States. These regions correspond with the U.S. Geological Survey's National Water 
Quality Assessment (NAWQA) Program Major River Basin (MRB) study units …