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The purpose of the Conservation Effects Assessment Project (CEAP) cropland national assessment is to quantify the environmental benefits of conservation programs at the regional and national levels, which include both onsite and instream water quality benefits. Modeling is an effective tool for environmental assessment at the regional and national scale due to the complexities in nature at this scale. Two simulation models, the Agricultural Policy Environmental extender (APEX) and the Soil and Water Assessment Tool (SWAT), were used for the CEAP cropland national assessment. A subset of National Resources Inventory (NRI) sample points was selected to serve as "representative fields" for the CEAP cropland survey...


map background search result map search result map USGS Land Cover - Woodland for Arkansas 20170812 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Hawaii 20170828 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Louisiana 20160518 State or Territory Shapefile USGS Land Cover - Woodland for Mississippi 20160519 State or Territory Shapefile USGS Land Cover - Woodland for Washington 20170920 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Puerto Rico 20160519 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Puerto Rico 20160519 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Mississippi 20160519 State or Territory Shapefile USGS Land Cover - Woodland for Arkansas 20170812 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Louisiana 20160518 State or Territory Shapefile USGS Land Cover - Woodland for Washington 20170920 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Hawaii 20170828 State or Territory FileGDB 10.1