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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 Mississippi 20160519 State or Territory Shapefile USGS Land Cover - Woodland for Missouri 20180127 State or Territory Shapefile USGS Land Cover - Woodland for District of Columbia 20180810 State or Territory Shapefile USGS Land Cover - Woodland for Illinois 20180809 State or Territory Shapefile USGS Land Cover - Woodland for Minnesota 20180810 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for New York 20180810 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for North Dakota 20180810 State or Territory Shapefile USGS Land Cover - Woodland for Ohio 20180810 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Oklahoma 20180810 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for California 20180910 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for District of Columbia 20180810 State or Territory Shapefile USGS Land Cover - Woodland for Ohio 20180810 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Mississippi 20160519 State or Territory Shapefile USGS Land Cover - Woodland for North Dakota 20180810 State or Territory Shapefile USGS Land Cover - Woodland for Illinois 20180809 State or Territory Shapefile USGS Land Cover - Woodland for Oklahoma 20180810 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Missouri 20180127 State or Territory Shapefile USGS Land Cover - Woodland for New York 20180810 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for Minnesota 20180810 State or Territory FileGDB 10.1 USGS Land Cover - Woodland for California 20180910 State or Territory FileGDB 10.1