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External Data Sources
   Search for "Nitrogen %28Water Quality%29" - The top results (relevance sort) are listed below:
\"NC0 Results
\"ArcGIS9 Results beginning with...
  • WQI Parameter Scores 1994-2013

  • \"geo.data.gov\"2 Results
  • County-based estimates of nitrogen and phosphorus content of animal manure in the United States for 1982, 1987, and 1992.
  • California Aqueous Chemistry

  • \"Trimble0 Results
       US Government Maintained Portal:  GeoPlatform.gov
       Other Data Sources, incl. Commercial and International: NSGIC GIS Inventory  |  CIESIN World Data Center

    NCSU Data Collection

    [ Hide ] Possible Related Terms:
    Air Pollution, Air Quality, Forests

    Important Legacy denotes outdated data. A more recent version likely exists. Consider an "External Data Source" option linked above, or click the Collection link for updated source options.
    TitleDateSorted in Descending OrderCollectionExtentScaleMD
    CMAP: Nitrogen-saturated Forests of the Conterminous U.S.
    Legacy
    1998 C-MAPConterminous United States 1:1,000,000 Metadata Link
    CMAP: Nitrogen-saturated Forests of the Conterminous U.S.
    Legacy
    1998 C-MAPConterminous United States 1:2,000,000 Metadata Link