Point source nutrient discharges to surface water in the United States Pacific Northwest for 2002 summarized for NHDPlus v2 catchments
This spatial data set was created by the U.S. Geological Survey (USGS) to represent the amount of total nitrogen 
and total phosphorus discharged to surface waters in the Pacific Northwest region of the United States (Hydro 
Region 17; Major River Basin 7 (MRB7)) during 2002 from all permitted wastewater facilities …