{ "layers": [ { "currentVersion": 10.91, "cimVersion": "2.9.0", "id": 0, "name": "SSURGO Soils", "type": "Feature Layer", "description": "The \"Gridded Soil Survey Geographic (gSSURGO) Database State-tile Package\" product is derived from the Soil Survey Geographic (2.2) Database dated October 2023. The gSSURGO data were prepared by merging SSURGO digital vector map and tabular data into State-wide extents, and adding a State-wide gridded map layer derived from the vector, plus a new value added look up (valu) table that contains \u201cready to map attributes\u201d.SSURGO is generally the most detailed level of soil geographic data developed by the National Cooperative Soil Survey (NCSS) in accordance with NCSS mapping standards. The tabular data represent the soil attributes and are derived from properties and characteristics stored in the National Soil Information System (NASIS). The gSSURGO data were prepared by merging traditional SSURGO digital vector map and tabular data into State-wide extents, and adding a State-wide gridded map layer derived from the vector, plus a new value added look up (valu) table containing \"ready to map\u201d attributes. The gridded map layer is offered in an ArcGIS™ 10.0 file geodatabase raster format.The raster and vector map data have a State-wide extent. The raster map data have a 10 meter cell size that approximates the vector polygons in an Albers Equal Area projection. Each cell (and polygon) is linked to a map unit identifier called the map unit key (MUKEY). A unique map unit key is used to link raster cells and polygons to attribute tables, including the new value added look up (valu) table that contains additional derived data. ", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkt": "GEOGCS[\"GCS_North_American_1983\",DATUM[\"D_North_American_1983\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],VERTCS[\"Unknown VCS\",VDATUM[\"Unknown\"],PARAMETER[\"Vertical_Shift\",0.0],PARAMETER[\"Direction\",1.0],UNIT[\"Meter\",1.0]]", "xyTolerance": 8.983152841195213E-9, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -400, "falseY": -400, "xyUnits": 9.999999999999999E8, "falseZ": 0, "zUnits": 1, "falseM": 0, "mUnits": 1 }, "sourceHeightModelInfo": { "heightModel": "gravity_related_height", "vertCRS": "Unknown VCS", "heightUnit": "meter" }, "copyrightText": "Soil Survey Staff. Gridded Soil Survey Geographic (gSSURGO) Database for North Dakota. United States Department of Agriculture, Natural Resources Conservation Service. Available online at http://datagateway.nrcs.usda.gov/. 2023-10 (FY2024 official release).\n\n*North Dakota State Geospatial Committee Note*\n\nThe NRCS disperses the SSURGO spatial data with only a couple\nattributes included by default such as MapUnit Symbol and MapUnit\nKey. Many additional data tables are available to join to the spatial\ndata based on these attributes, however due to the complexity of the\ntable information, users will probably want to join the tables based\non their own decision making processes and needs for the data. In\nshort, it would be impossible for us to create an attribute table that\nwould satisfy all needs. 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