Nutrients
Nitrogen and Phosphorus Pollution Data Downloads
All layers are national except SPARROW results. The 2002 SPARROW results cover six of eight Major River Basins and the 1992 results cover the Mississippi basin only.
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| NAME | ATTRIBUTES | GEOSPATIAL | METADATA | GENERAL PROGRAM WEBSITE |
|---|---|---|---|---|
| Hydrologic Units (HUC8) - Summaries and Boundaries | None Available | |||
| SPARROW Total N/P Yields o 2002 o 1992 |
2002 Attributes Download Instructions |
External Website | External Website External Website | |
| Water Quality Monitoring Sites with N/P (STORET) | EPA Website | |||
| Water Quality Monitoring Sites with N/P (NWIS) | External Website | |||
| NARS N/P Values for Streams | EPA Website | |||
| NARS N/P Values for Lakes | EPA Website | |||
| Facilities Likely to Discharge N/P to Water | EPA Website | |||
| NPDES - Concentrated Animal Feeding Operations (CAFO) Summary | None Available | EPA Website | ||
| National Land Cover Dataset | External Website |
External Website External Website |
External Website | External Website |
| Waters Listed for N/P Impairments | EPA Website | |||
| Waters with N/P TMDLs | EPA Website | |||
| Sources of Drinking Water (By HUC12) |
|
EPA Website | ||
| State Boundaries | None Available | External Website | External Website | |
| Mississippi-Atchafalaya River Basin Boundary | None Available | None Available |
To report an error found in data downloaded from this site, please notify the contact listed in the metadata for the data layer.
For questions about the Data Access Tool and Nitrogen and Phosphorus Load Data Layers Website, Contact Us (or email us at ow-owow-internet-comments@epa.gov).