The 2-Digit Hydrologic Units, a component of the Watershed Boundary Dataset (WBD), depict the major water resource regions of the United States. A water resource region is the first level of classification used by the United States Geological Survey to … Continued
The 8-Digit Hydrologic Units, a component of the Watershed Boundary Dataset (WBD), depict the fourth level hydrologic subdivision of the United States. A hydrologic unit can accept surface water from upstream drainage areas and may define a drainage area with … Continued
Hydrologic Soil Group, which estimates potential runoff from precipitation based on soils characteristics, has been updated to the October 2019 NRCS SSURGO data release.
Surface Texture is based on the composition of sand, silt, and clay in the surface layer of soil based on the standard soil triangle definition.
Soil Loss Tolerance, a measure of how much soil can be lost per year without impacting production, has been updated to the October 2019 NRCS SSURGO data release. Note there is a change to the legend used to depict the … Continued
Forest Productivity is a measure of wood volume likely to be produced by the most important tree species based on soil characteristics.
Soil Taxonomy Order, which is the broadest classification of soil types, has been updated to the October 2019 NRCS SSURGO data release.
Slope Gradient, depicting the steepness of the landscape by soil type, has been updated to the October 2019 NRCS SSURGO data release.
Drainage Class, which classifies how quickly water is removed from the soil, has been updated to the October 2019 NRCS SSURGO data release.
Farmland Class, which shows prime and important farmland, has been updated to the October 2019 NRCS SSURGO data release.