SOURCE REGISTER
Source dates and retrieval dates answer different questions. We show both where the providers supply them.
This date records our documentation review, not a field visit, soil sample or drought-map date. Live reports retain the dates supplied by each provider.
USDA NRCS
SSURGO map units, component shares, horizons, drainage and reported soil properties. Not a site investigation beneath a particular foundation.
NRCS National Soil Survey Handbook — LE
Recommended data citation: Soil Survey Staff, Natural Resources Conservation Service, United States Department of Agriculture, Web Soil Survey. Keep the survey area and database-restoration date with any property-specific discussion.
U.S. DROUGHT MONITOR
Cumulative drought-area percentages and dated map weeks. Regional context, not moisture sensors at a house. Please cite the U.S. Drought Monitor with the National Drought Mitigation Center (NDMC), U.S. Department of Agriculture (USDA) and National Oceanic and Atmospheric Administration (NOAA). The U.S. Drought Monitor is produced through a partnership among NDMC, USDA, NOAA and NASA.
U.S. CENSUS BUREAU
Approximate street-address matches and county identification. Address interpolation is not a building-footprint or property-boundary survey.
Census geocoder attribution: Address matching uses U.S. Census Bureau Geocoding Services. GroundShiftCheck is an independent service and is not endorsed or certified by the Census Bureau. Geocoding Services documentation ↗
The geocoder calculates or interpolates coordinates from Census address ranges. A returned match is not proof that a structure exists at that exact point and is not a parcel or building-footprint survey.
GroundShiftCheck is not a government service. Our interface, summaries and screening choices are independent. Sources can be incomplete or temporarily unavailable; unknown values are not replaced with reassuring numbers.
Review the full methodology ↗