Major and minor point-source dischargers across the conterminous U.S.

Major (waste-water treatment facilities and some industrial facilities) and minor (waste-water treatment facilities) point-source dischargers are located across the United States. The Point-Source Load Estimation Tool (PSLoadEsT) is a user-friendly interface for point-source dischargers that generates reproducible calculations of nutrient loads to streams.

Figure is from Skinner, K.D., and Maupin, M.A., 2019, Point-source nutrient loads to streams of the conterminous United States, 2012: U.S. Geological Survey Data Series 1101, 13 p., https://doi.org/10.3133/ds1101.