National Water-Quality Assessment (NAWQA) Program
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County pesticide use estimates for 200 compounds, 1992
County pesticide use estimates for 220 compounds, 1997
Annual county atrazine use estimates for agriculture, 1992 - 2007
Grids of agricultural pesticide use in the conterminous United States, 1992
Grids of agricultural pesticide use in the conterminous United States, 1997
Enhanced National Land Cover Data 1992 (NLCDe 92)
Enhanced historical land-use and land-cover data sets of the U.S. (GIRAS)
Drainage basins used for development of the watershed regressions for pesticides (WARP) model, 2012
Drainage basins used for assessing trends in concentration of pesticides in streams of the U.S.
Soil Restrictive Layer in the upper 25,35,45, and 55 cm of agricultural land
Precipitation -- National Climatic Data Center data file: drd964x.pct.txt; Metadata: divisional.README) and mapped Climate Division boundaries
U.S. Department of the Interior | U.S. Geological Survey
URL: http://water.usgs.gov/nawqa/pnsp/data/spatial_data.html
Page Contact Information: gs-w_nawqa_whq@usgs.gov
Page Last Modified: Thursday, 31-Mar-2011 11:23:24 EDT
