GovBot Soils

Returns the USDA NRCS farmland classification of the soil survey map units at a point, or within a circle of up to 1000 meters with the acreage and percent of the area in each class: the class as NRCS records it (for example All areas are prime farmland, Prime farmland if drained, Farmland of statewide importance, Not prime farmland), its class group, map unit key, symbol and name. Conditional classes apply only where the stated condition is met. The classification is the soil survey designation used for the Farmland Protection Policy Act; it is not a land evaluation and site assessment.

get_farmland_classification

Returns the USDA NRCS soil interpretation ratings published for one soil survey map unit by map unit key, for each component: the rating class (for example Not limited, Somewhat limited, Very limited), the numeric rating from 0 to 1 and the limiting features NRCS records as reasons with their values; and, per interpretation, the percent of the map unit in each rating class and the rating of the largest component. Interpretations available: septic_tank_absorption_fields, dwellings_with_basements, dwellings_without_basements, small_commercial_buildings, local_roads_and_streets, unpaved_local_roads_and_streets, shallow_excavations, lawn_landscape_golf_fairway, sewage_lagoons, sanitary_landfill_trench, shallow_infiltration_systems, deep_infiltration_systems, ground_solar_arrays_soil_anchor, roadfill_source, topsoil_source, camp_areas, picnic_areas, playgrounds, paths_and_trails. Ratings describe soil limitations for the stated use at survey scale; they are not a site evaluation, a percolation test or a permit decision.

get_soil_interpretation_ratings

Returns, for one USDA NRCS soil survey map unit by map unit key, the map unit name, survey area and aggregate properties, and every component with percent of the map unit and its range, slope, drainage class, hydrologic soil group, hydric rating, taxonomic class, landform, runoff class, erosion factors, capability class, corrosion potential for steel and concrete, restrictive layers (kind, hardness and depth range), the shallowest depth of a layer recorded as wet in any month, and soil horizons from the surface down (depths, texture class, sand, silt and clay percent, organic matter, bulk density, saturated hydraulic conductivity, available water capacity, pH, calcium carbonate, electrical conductivity, erodibility factor, linear extensibility, liquid limit and plasticity index). Values are the NRCS representative values with units stated in the result.

get_soil_component_properties

Returns the USDA NRCS soil survey (SSURGO) map unit mapped at one point, read live from NRCS Soil Data Access: map unit key, symbol, name and kind, farmland classification, the soil survey area with its SSURGO version date, map unit aggregate properties (weighted slope, minimum depth to bedrock, minimum depth to water table annually and April to June, available water storage to 25, 50, 100 and 150 cm, drainage class and hydrologic soil group of the dominant condition, percent of components rated hydric) and its components with percent of the map unit, slope range, drainage class, hydrologic soil group, taxonomic class, landform and capability class. A point on a survey area boundary can return more than one map unit. Soil survey maps are made at survey scale; they are not an on-site investigation.

get_soil_map_unit_at_point

Returns the USDA NRCS soil survey (SSURGO) map units within a circle around a point or within a polygon, with the acreage and percent of the area each covers, computed by NRCS Soil Data Access from map unit polygons clipped to the area: map unit key, symbol, name, farmland classification, dominant-condition drainage class and hydrologic soil group, and major components. Also returns the percent of the area by farmland classification, hydrologic soil group and drainage class, and the percent covered by mapped soil polygons. The circle radius is at most 1000 meters; a polygon has 3 to 200 vertices, an area of at most 10 square kilometers and spans at most 0.1 degree in latitude and longitude. Either the polygon or both latitude and longitude are required.

summarize_soil_map_units_in_area

Returns the USDA NRCS soil survey area containing a point, or one survey area by its symbol: survey area symbol and name, SSURGO version number and the date that version was established, the publication date in the survey area's FGDC metadata, Soil Data Mart publication status, whether spatial and tabular data are complete, map scale, survey area acres, responsible MLRA soil survey office and agency, and the Web Soil Survey address. A point on a survey area boundary can return more than one survey area. Either the symbol or both latitude and longitude are required.

get_soil_survey_area