Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: Level 3 Nutrient Ecoregions, 2002
This tabular data set represents the area of each level 3 nutrient ecoregion in square meters 
compiled for every MRB_E2RF1 catchment of the Major River Basins (MRBs, Crawford and 
others, 2006). The source data are from the 2002 version of the U.S. Environmental Protection 
Agency's (USEPA) Aggregations of Level III …