State Soil Geographic (STATSGO) DatabaseEntry ID: MSU0035
Abstract: The "State Soil Geographic (STATSGO) Database" is one of three
soil geographic databases established by the United States
Department of Agriculture's (USDA) Natural Resources
Conservation Service (NRCS). Soil maps for STATSGO are made by
generalizing the detailed soil survey or SSURGO geographic
database. Where more detailed maps are not available, data on
... geology, topography, vegetation, and climate are assembled,
together with landsat images. Soils of analogous areas are
studied, and a determination of the probable classification and
extent of the soils is made. The mapping scale for STATSGO is
1:250,000. The level of mapping is primarily designed for broad
planning and management uses covering state, regional, or
Map unit composition for STATSGO is determined by transecting or
sampling areas on the more detailed maps and expanding the data
statistically to characterize the whole map unit. Using
the U.S. Geological Survey's (USGS) 1:250,000 Topographic
Quadrangle Series as a base map, the soil data are digitized by
line segment (vector) to comply with national guidelines and
Each STATSGO map unit is linked to the STATSGO Map Unit
Interpretations Record attribute data base. The attribute data
base gives the proportionate extent of the component soils and
their properties for each map unit. The STATSGO map units
consists of 1 to 21 components. The database includes over 25
soil, physical and chemical properties for approximately 18,000
soil series recognized in the United States. Examples of
information that can be queried from the database are available
water capacity, soil reaction, salinity, flooding, water table,
bedrock, and interpretations for pesticide leaching potential,
areas flooded for long durations, and sources of gravel.
Collection Organization: Natural Resources Conservation Service
Collection Methodology: Soil maps for STATSGO are made by
generalizing detailed soil survey maps. Where more detailed
maps are not available, data on topography, geology, vegetation,
and climate are assembled, together with satellite images.
Soils of analogous areas are studied, and a determination of the
classification and the extent of the soils is made. Map unit
composition for STATSGO is determined by transecting or sampling
areas on the detailed maps and expanding the data statistically
to characterize the whole map unit.
Collection Frequency: N/A
Update Characteristics: N/A
STATSGO data are archived and distributed as complete coverage
for a state. Data can be joined between states.
STATSGO spatial data are available in either the USGS Digital
Line Graph (DLG-3) Optional Distribution Format, or ARC/INFO
format (Unix, Windows, or GRASS 4.13). Soil map symbols are not
normally carried within the DLG-3 Optional Format, however these
map symbols are made available as a unique ASCII file when NRCS
soils data are distributed in the DLG format.
The STATSGO Map Unit Interpretations Record attribute data are
stored in a relational database. This format is a variable
length, tab delimited, ASCII file.
Both spatial and attribute data are distributed on CD-ROM or
Start Date: 1988-01-01
AGRICULTURE > SOILS
TERRESTRIAL HYDROSPHERE > GROUND WATER > SALTWATER INTRUSION
TERRESTRIAL HYDROSPHERE > GROUND WATER > WATER TABLE
LAND SURFACE > SOILS > HYDRAULIC CONDUCTIVITY
LAND SURFACE > SOILS > SOIL CHEMISTRY
LAND SURFACE > SOILS > SOIL CLASSIFICATION
LAND SURFACE > SOILS > SOIL HORIZONS/PROFILE
LAND SURFACE > SOILS > SOIL POROSITY
LAND SURFACE > SOILS > SOIL PRODUCTIVITY
LAND SURFACE > SOILS > SOIL STRUCTURE
LAND SURFACE > TOPOGRAPHY > LANDFORMS
Role: TECHNICAL CONTACT
Phone: 817-334-5559 Ext. 3008
Email: fminzenm at ftw.nrcs.usda.gov
USDA Natural Resources Conservation Service National Cartography and Geospatial Center 501 Felix Street, Building 23 P.O. Box 6567
City: Fort Worth
Province or State: TX
Postal Code: 76115-0567
FGDC Manual of Federal Geographic Data Products [Online].
Consortium for International Earth Science Information Network
(CIESIN). August 10, 1993. USDA Global Change Data Assessment
and Integration Project. Guide to USDA Global Change Databases
(Draft ... Version). University Center, MI : CIESIN.
Soil Survey Staff. 1994. State Soil Geographic (STATSGO) Data
Base : Data Users Guide. U.S. Department of Agriculture, Natural
Resources Conservation Service (Misc. pub. no. 1492).
Bliss N, Reybold U. Small-scale digital soil maps for
interpreting natural resources. J. Soil and Water Cons. Jan-Feb
Elissal A, Caruso V. Digital elevation models. Circ. 895-B.
Reston, Va: U.S. Geological Survey, 1983.
Natural Resources Conservation Service, 1983. National Soils
Lytle, D., Bliss, N.B., and Waltman, S.W. (no date).
Interpreting the State Soil Geographic Data Base (STATSGO). USDA
Natural Resources Conservation Service.
Soil Survey Staff. 1975. Soil Taxonomy: A basic system of soil
classification for making and interpreting soil surveys. USDA
Natural Resources Conservation Service, Handbook 436.
Soil Survey Staff. 1993. Soil Survey Manual. Handbook 18.
Soil Survey Staff. 1994. Keys to Soil Taxonomy. USDA Natural
Resources Conservation Service.
Creation and Review Dates
Last DIF Revision Date: 2009-04-24