Potential Grazing Land Within the Pacific Drainages of the Western United States, 2011
The U.S. Geological Survey (USGS) is developing SPARROW models (SPAtially Related Regressions On Watershed Attributes) to assess the transport of contaminants (e.g., sediment and nutrients) through United States Pacific watersheds (the Columbia River basin; the coastal drainages of Washington, Oregon, and California; the Klamath River basin; the Central Valley of California, and the west slopes of the Sierra Nevada Mountains). SPARROW relates instream water quality measurements to spatially referenced characteristics of watersheds, including contaminant sources and factors influencing terrestrial and aquatic transport. A watershed property that is expected to influence sediment and nutrient delivery to streams is the area of potential livestock grazing land. The spatial data set "Potential Grazing Land Within the Pacific Drainages of the Western United States, 2011" represents areas that were suitable for livestock grazing (primarily cattle) in 2011. This data set was developed by considering relevant landscape attributes with regards to the potential for land to be suitable for livestock grazing. These attributes included land cover type, slope, proximity to water bodies and streams and designated grazing alottments.
Citation Information
| Publication Year | 2019 |
|---|---|
| Title | Potential Grazing Land Within the Pacific Drainages of the Western United States, 2011 |
| DOI | 10.5066/P98PDDT1 |
| Authors | Alicia Milligan, Daniel Wise |
| Product Type | Data Release |
| Record Source | USGS Digital Object Identifier Catalog |
| USGS Organization | Water Resources Mission Area - Headquarters |
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Spatially referenced models of streamflow and nitrogen, phosphorus, and suspended-sediment loads in streams of the Pacific region of the United States
Although spatial information describing the supply and quality of surface water is critical for managing water resources for human uses and for ecological health, monitoring is expensive and cannot typically be done over large scales or in all streams or waterbodies. To address the need for such data, the U.S. Geological Survey developed SPAtially Referenced Regression On Watershed attributes (SPAAuthorsDaniel R. Wise - Connect