Scientific Investigations Report 2013–5103
Figure 5. Results for the Snake River, Idaho, Oregon, and Washington, from the total phosphorus National Hydrography Dataset SPARROW model developed for the United States Pacific Northwest (2002 conditions). Urban sources include developed land and discharge from wastewater-treatment facilities and fish hatcheries; geologic sources include phosphorus runoff from forestland, scrubland, and grassland; livestock manure is generated by confined and grazing livestock. |
First posted July 17, 2013 For additional information contact: Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge. |