Application of nitrogen generated by cattle at dairies and feedlots to farm land in the United States Pacific Northwest for 2002
Dates
Publication Date
2013-05-01
Time Period
2002-01-01
Summary
This spatial data set was created by the U.S. Geological Survey (USGS) to represent the amount of nitrogen generated at confined cattle operations that was applied to nearby farm land in the Pacific Northwest region of the United States (Hydro Region 17; Major River Basin 7 (MRB7)) during 2002.
Summary
This spatial data set was created by the U.S. Geological Survey (USGS) to represent the amount of nitrogen generated at confined cattle operations that was applied to nearby farm land in the Pacific Northwest region of the United States (Hydro Region 17; Major River Basin 7 (MRB7)) during 2002.
This data set was intended to represent spatially explicit landscape nutrient loadings in the application of the SPARROW (SPAtially Referenced Regressions On Watershed attributes) model to assess total nitrogen and total phosphorus conditions in surface water in Major River Basin 7 (MRB7) using the National Hydrography Dataset as a hydrologic framework.