State Soil Geographic (STATSGO) Database
Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Environmental Protection Agency
Publication_Date: 19980801
Title:
State Soil Geographic (STATSGO) Database for CONUS, Alaska, and Hawaii in BASINS
Publication_Information:
Publication_Place: Washington, D.C.
Publisher: U.S. Environmental Protection Agency
Online_Linkage:
For BASINS model and hydrographic data http://www.epa.gov/OST/BASINS
Description:
Abstract:
The STATSGO database is a digital general soil
association map developed by the National Cooperative
Soil Survey. It consists of a broad based inventory of soils
and nonsoil areas that occur in a repeatable pattern on the
landscape and that can be cartographically shown at the
scale mapped. The soil maps for STATSGO are compiled
by generalizing more detailed soil survey maps. Where
more detailed soil survey maps are not available, data on
geology, topography, vegetation, and climate are
assembled, together with Land Remote Sensing Satellite
(LANDSAT) images. Soils of like areas are studied, and
the probable classification and extent of the soils are
determined.
Map unit composition for a STATSGO map is determined
by transecting or sampling areas on the more detailed
maps and expanding the data statistically to characterize
the whole map unit.
The original data set consists of georeferenced digital map
data and computerized attribute data. The map data are
collected in 1- by 2-degree topographic quadrangle units
and merged and distributed as statewide coverages. The
soil map units are linked to attributes in the Map Unit
Interpretations Record relational data base which gives the
proportionate extent of the component soils and their
properties.
This data set provides a soil association map in ARCVIEW
Shapefile Format for the Conterminous United States. The
shapefile is prepared and distributed by EPA regions.
Selected attribute related tables which contain soil
properties are provided. This data set is a subset of the
original STATSGO data set developed by the National
Cooperative Soil Survey.
Purpose:
STATSGO depicts information about soil features on or near the surface of
the Earth. These data are collected as part of the National Cooperative
Soil Survey. STASGO is designed primarily for regional, multi-county,
riverbasin, state, and multi-state regional planning, management, and
monitoring.
Supplemental_Information:
Intended_use_of_data:
This data set was prepared to support the U.S. EPA BASINS
(Better Assessment Science Integrating Point and Nonpoint
Sources) System, Version 2.0.
References_Cited:
U.S. Department of Agriculture. 1975. Soil Taxonomy: A basic
system of soil classification for making and interpreting soil
surveys. Soil Conserv. Serv., U.S. Dep.Agric. Handb. 436.
U.S. Department of Agriculture. 1992. Keys to Soil
Taxonomy. SMSS Technical Monograph No. 19. Soil
Surv. Staff, Soil Conserv. Serv.
U.S. Department of Agriculture. 1993. National Soil Survey
Handbook, title 430-VI. Soil Surv. Staff, Soil Conserv. Serv.
U.S. Department of Agriculture. 1993. Soil Survey Manual.
Soil Surv. Staff, U.S. Dep. Agric. Handbook 18.
U.S. Department of Agriculture. 1993. National Soil Survey
Handbook, title 430-VI. Soil Surv. Staff, Soil Conserv. Serv.
U.S. Department of Agriculture. 1993. State Soil
Data Users Guide.Soil Conserv. Serv.
http://www.ftw.nrcs.usda.gov/pdf/statsgo_db.pdf
U.S. Department of Agriculture. 1994. State Soil
Data use information.Soil Conserv. Serv.
U.S. Department of Agriculture. State Soil Survey
Database Data Dictionary. Soil Conserv. Serv
http://www.ftw.nrcs.usda.gov/stat_data.html
Metadata http://www.ftw.nrcs.usda.gov/stat2.html
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19940000
Currentness_Reference: Publication Date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -170.00
East_Bounding_Coordinate: -65.00
North_Bounding_Coordinate: 70.00
South_Bounding_Coordinate: 19.00
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Conterminous United States
Theme_Keyword: Soils
Theme_Keyword: General Soils Map
Theme_Keyword: State Soil Geographic
Theme_Keyword: STATSGO
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: Conterminous United States of America (CONUS)
Place_Keyword: Alabama AL
Place_Keyword: Alaska AK
Place_Keyword: Arizona AZ
Place_Keyword: Arkansas AR
Place_Keyword: California CA
Place_Keyword: Colorado CO
Place_Keyword: Connecticut CT
Place_Keyword: Delaware DE
Place_Keyword: District of Columbia DC
Place_Keyword: Florida FL
Place_Keyword: Georgia GA
Place_Keyword: Hawaii HI
Place_Keyword: Idaho ID
Place_Keyword: Illinois IL
Place_Keyword: Indiana IN
Place_Keyword: Iowa IA
Place_Keyword: Kansas KS
Place_Keyword: Kentucky KY
Place_Keyword: Louisiana LA
Place_Keyword: Maine ME
Place_Keyword: Maryland MD
Place_Keyword: Massachusetts MA
Place_Keyword: Michigan MI
Place_Keyword: Minnesota MN
Place_Keyword: Mississippi MS
Place_Keyword: Missouri MO
Place_Keyword: Montana MT
Place_Keyword: Nebraska NE
Place_Keyword: Nevada NV
Place_Keyword: New Hampshire NH
Place_Keyword: New Jersey NJ
Place_Keyword: New Mexico NM
Place_Keyword: New York NY
Place_Keyword: North Carolina NC
Place_Keyword: North Dakota ND
Place_Keyword: Ohio OH
Place_Keyword: Oklahoma OK
Place_Keyword: Oregon OR
Place_Keyword: Pennsylvania PA
Place_Keyword: Rhode Island RI
Place_Keyword: South Carolina SC
Place_Keyword: South Dakota SD
Place_Keyword: Tennessee TN
Place_Keyword: Texas TX
Place_Keyword: Utah UT
Place_Keyword: Vermont VT
Place_Keyword: Virginia VA
Place_Keyword: Washington WA
Place_Keyword: West Virginia WV
Place_Keyword: Wisconsin WI
Place_Keyword: Wyoming WY
Access_Constraints: None
Use_Constraints:
None. The U.S. Department of Agriculture, National Resources Conservation
Service should be acknowledged as the data source.
http://www.statlab.iastate.edu/soils/nsdaf
Data_Quality_Information:
Logical_Consistency_Report:
Certain node/geometry and topology (GT)-polygon/chain
relationships are collected or generated to satisfy
topological requirements. (The GT-polygon corresponds to
the soil delineation). Some of these requirements include;
chains must begin and end at nodes, chains must connect
to each other at nodes, chains do not extend through
nodes, left and right GT-polygons are defined for each
chain element and are consistent throughout, and the
chains representing the limits of the file (neatline) are free of
gaps. The tests of logical consistency are performed using
vendor software. The neatline is generated by connecting
the explicitly entered four corners of the digital file. All data
outside the enclosed region are ignored and all data
crossing these geographically straight lines are clipped at
the neatline. Data within a specified tolerance of the
neatline are snapped to the neatline. Neatline
straightening aligns the digitized edges of the digital data
with the generated neatline (i.e., with the longitude/latitude
lines in geographic coordinates). All internal polygons are
tested for closure with vendor software and are checked
on hard copy plots. All data are checked for common soil
lines (i.e., adjacent polygons with the same label).
Quadrangles are edge matched within the state, merged
into a statewide data sets, and then edge matched to
adjacent state data sets. Edge locations do not deviate
from centerline to centerline by more than 0.01 inches.
Completeness_Report:
A map unit is a collection of areas defined and named the
same in terms of their soil and/or nonsoil areas. Each map
unit differs in some respect from all others in a survey area
and is uniquely identified. Each individual area is a
delineation. Each map unit consists of one to 21
components.
In those few areas where detailed maps did not exist,
reconnaissance soil surveys were combined with data on
geology, topography, vegetation, climate, and remote
sensing images to delineate map units and estimate the
percentages of components. The STATSGO map unit
components are soil series phases, and their percent
composition represents the estimated areal proportion of
each within STATSGO map unit. The composition for a
map unit is generalized to represent the statewide extent of
that map unit and not the extent of any single map unit
delineation. These specifications provide a nationally
consistent representation of STATSGO attribute data.
The actual composition and interpretive purity of the map
unit delineations were based on statistical analysis of
transect data. The composition was largely determined by
measuring transects on detailed soil survey maps. The
number of transects used was proportional to the relative
size, number, and complexity of the delineations. The
combined data on the length of the map units crossed by
the transects were used to determine the percentages of
the different soil and nonsoil areas in each map unit.
Specific limits were established on the classification of soils
and the design and name of map units. These limits are
outlined in U.S. Department of Agriculture. 1975. Soil
Taxonomy: A basic system of soil classification for making
and interpreting soil surveys. Soil Conserv. Serv., U.S.
Dep. Agric. Handb. 436.; U.S. Department of Agriculture.
1992. Keys to Soil Taxonomy. SMSS Technical
Monograph No. 19. Soil Surv. Staff, Soil Conserv. Serv.;
U.S. Department of Agriculture. 1993. National Soil Survey
Handbook, title 430-VI. Soil Surv. Staff, Soil Conserv.
Serv.; and U.S. Department of Agriculture. 1993. Soil
Survey Manual. Soil Surv. Staff, U.S. Dep. Agric.
Handbook 18.
Adherence to National Cooperative Soil Survey standards
and procedures is based on peer review, quality control,
and quality assurance. Quality control is outlined in
documents that reside with the Natural Resources
Conservation Service state soil scientist.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The accuracy of these digital data is based upon their
compilation to base maps that meet National Map
Accuracy Standards. The difference in positional
accuracy between the map unit boundaries in the field and
their digitized map locations is unknown. The locational
accuracy of soil delineations on the ground varies with the
transition between map units. For example, in areas where
changes in soils, climate, topography, and geology occur
subtly across a portion of a state, the transition between
soil map unit boundaries will be gradual. Where these
features change abruptly, such as from an area of foothills
to a lake plain, the transition will be very narrow. Soil
delineation boundaries were digitized within 0.01 inches of
their locations on the digitizing source. The digital map
elements are edge matched between data sets. The data
along each state boundary are matched against the data
for the adjacent state. Edge locations generally do not
deviate from centerline to centerline by more than 0.01
inch.
Lineage:
Process_Step:
Process_Description: Map unit composition was determined
by transecting or sampling areas on the more detailed
soil maps and expanding the data statistically to
characterize the whole map unit.
Source Used Citation Abbreviation: SCS1
Process_Date: 19940000
Process_Step:
Process_Description: Soil map unit lines and symbols
were drafted in red pencil on a mylar overlay that
was punch registered to fit the mylar USGS
1:250,000-scale topographic quadrangle. A detailed
and complete edit was performed on all overlays
before digitizing. The soil delineation overlays
were raster scanned at a scanning resolution of at
least 0.01 inches and converted to a vector format
or were manually digitized on a digitizing tablet
with a resolution of at least 0.001 inches. Four
control points corresponding to the four corners
of the quadrangles were used for registration
during data collection. The control points were
either explicitly entered or developed by the
software. The data sets were edge matched and
merged into statewide coverages. A detailed and
complete edit was performed on all digital data.
Source Used Citation Abbreviation: USGS1, SCS3
Process_Date: 19940000
Process_Step:
Process_Description:
The original state by state Arc/Info coverages were converted from their
original projections (e.g. mostly Albers Conic Equal area with datum
NAD27) to geographic decimal degrees projection with datum NAD 83. They
were then converted to Arcview shape files using the Arc/Info ARCSHAPE
command. Two related tables in Arcview DBF format were prepared to
contain selected fields (i.e. soil properties) in the COMP and LAYER
tables of the STATSGO database.
For distribution with BASINS 2.0, the data layer was divided by EPA
regions (i.e. distribution by CD). This involved merging the state by
state shape files in Arcview to produce the EPA regional shape files.
Other form of data distribution (e.g. by cataloging unit) is available
through the web (http://www.epa.gov/OST/BASINS).
Process_Date: 19971200
Spatial_Data_Organization_Information:
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.0001
Longitude_Resolution: 0.0001
Geographic_Coordinate_Units: Decimal Degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Statsgo.SHP
Entity_Type_Definition: STATSGO point attribute table
Entity_Type_Definition_Source: STATSGO Data Users Guide
Attribute:
Attribute_Label: AREA
Attribute_Definition: Area of polygon
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 12
Enumerated_Domain_Value_Definition: Floating Value
Enumerated_Domain_Value_Definition_Source: Assigned
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition: Perimeter of polygon
Attribute_Definition_Source: Assigned
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:12
Enumerated_Domain_Value_Definition: Floating Value
Enumerated_Domain_Value_Definition_Source: Assigned
Attribute:
Attribute_Label: MUID
Attribute_Definition: Map unit identification symbol created
by concatenation of the two character State FIPS code
and a three digit Arabic number.
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Entity_Type:
Entity_Type_Label: STATSGOC.DBF
Entity_Type_Definition: STATSGO related table containing
information which apply to a specific component of a soil
map unit
Entity_Type_Definition_Source: STATSGO Data Users Guide (1993)
Attribute:
Attribute_Label: MUID
Attribute_Definition: Map unit identification symbol created by
concatenation of the two character State FIPS code and a
three digit Arabic number.
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: SEQNUM
Attribute_Definition: Sequence number which identify the sequence
of components in a map unit
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:2
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: MUIDSEQNUM
Attribute_Definition: Concatenation of MUID and sequence number
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: COMPNAME
Attribute_Definition: Soil series name associated with the
component or sequence number
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:17
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: S5ID
Attribute_Definition: Soil interpretation record
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: COMPPCT
Attribute_Definition: The percentage of the component of the map
unit.
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:9
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: SLOPEL
Attribute_Definition: The minimum value for the range of slope of
a soil component within a map unit
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: SLOPEH
Attribute_Definition: The maximum value for the range of slope of
a soil component within a map unit
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: SURFTEX
Attribute_Definition: Surface layer soil texture using USDA soil
texture codes
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:9
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: ANFLOOD
Attribute_Definition: Annual flooding frequency
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:4
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: WTDEPL
Attribute_Definition: Minimum value for the range in depth to the
water table
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: WTDEPH
Attribute_Definition: Maximum value for the range in depth to the
water table
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: WTKIND
Attribute_Definition: The type of water table (APPAR=apparent,
ARTES = artesian, PERCH = perched)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: ROCKDEPL
Attribute_Definition: Minimum value for the range in depth to
bedrock (inches)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:10
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: ROCKDEPH
Attribute_Definition: Maximum value for the range in depth to
bedrock (inches)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:10
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: HYDGRP
Attribute_Definition: Soil hydrologic group (e.g.
A,B,C,D,A/D,C/D)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: DRAINAGE
Attribute_Definition: Soil drainage class identifying the natural
drainage condition of the soil.
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:10
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: HYDRIC
Attribute_Definition: Hydric soil rating
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: CLNIRR
Attribute_Definition: Nonirrigated capability class
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: CLIRR
Attribute_Definition: Irrigated capability class
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: PRIMFML
Attribute_Definition: Prime farmland classification
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:9
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Entity_Type:
Entity_Type_Label: STATSGOL.DBF
Entity_Type_Definition: STATSGO related table containing
information which apply to a specific layer of a component
of a soil map unit
Entity_Type_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: MUID
Attribute_Definition: Map unit identification symbol created by
concatenation of the two character State FIPS code and a
three digit Arabic number.
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: SEQNUM
Attribute_Definition: Sequence number which identify the sequence
of components in a map unit
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:2
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: MUIDSEQNUM
Attribute_Definition: Concatenation of MUID and sequence number
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: S5ID
Attribute_Definition: Soil interpretation record
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: LAYERNUM
Attribute_Definition: Layer number which identify sequence in the
soil profile
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:1
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: LAYDEPL
Attribute_Definition: Depth to the upper boundary of the soil
layer or horizon (inches)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 6
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: LAYDEPH
Attribute_Definition: Depth to the lower boundary of the soil
layer or horizon (inches)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 6
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: TEXTURE1
Attribute_Definition: USDA soil texture class for the specified
layer or horizon
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:10
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: TEXTURE2
Attribute_Definition: USDA soil texture class for the specified
layer or horizon
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:10
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: TEXTURE3
Attribute_Definition: USDA soil texture class for the specified
layer or horizon
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 10
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: KFACT
Attribute_Definition: Soil erodibility factor
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: KFFACT
Attribute_Definition: Soil erodibility factor, rock fragments
free
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: TFACT
Attribute_Definition: Soil loss tolerance factor
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: WEG
Attribute_Definition: Wind erodibility group
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: NO200L
Attribute_Definition: Percent passing sieve no. 200 (e.g. less
than 3 inches in size) - minimum value
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: NO200H
Attribute_Definition: Percent passing sieve no. 200 (e.g. less
than 3 inches in size) - maximum value
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: CLAYL
Attribute_Definition: Percent clay (e.g. percent material less
than 2 mm in size) - minimum value
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: CLAYH
Attribute_Definition: Percent clay (e.g. percent material less
than 2 mm in size) - maximum value
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: LLL
Attribute_Definition: Minimum percent liquid limit
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: LLH
Attribute_Definition: Maximum percent liquid limit
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: PIL
Attribute_Definition: Minimum percent plasticity limit
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: PIH
Attribute_Definition: Maximum percent plasticity limit
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:5
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: UNIFIED1
Attribute_Definition: Unified Engineering Classification (1)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:10
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: UNIFIED2
Attribute_Definition: Unified Engineering Classification (2)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:10
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: UNIFIED3
Attribute_Definition: Unified Engineering Classification (3)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:10
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: UNIFIED4
Attribute_Definition: Unified Engineering Classification (4)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:10
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: ASSHTO1
Attribute_Definition: ASSHTO Engineering Classification (1)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:9
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: ASSHTO2
Attribute_Definition: ASSHTO Engineering Classification (2)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:9
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: AASHTO3
Attribute_Definition: ASSHTO Engineering Classification (3)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:9
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: AASHTO4
Attribute_Definition: ASSHTO Engineering Classification (4)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:9
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: AWCL
Attribute_Definition: Low available water capacity (in/in)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: AWCH
Attribute_Definition: High available water capacity (in/in)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: BDL
Attribute_Definition: Low bulk density (g/cc)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: BDH
Attribute_Definition: High bulk density (g/cc)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: OML
Attribute_Definition: Minimum percent organic matter
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: STATSGO
Data Users Guide (1993)
Attribute:
Attribute_Label: OMH
Attribute_Definition: Maximum percent organic matter
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: PHL
Attribute_Definition: Minimum pH value
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: PHH
Attribute_Definition: Maximum pH value
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: SALINL
Attribute_Definition: Maximum salinity value (mmhos/cm)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: SALINH
Attribute_Definition: Minimum salinity value (mmhos/cm)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: SARL
Attribute_Definition: Minimum sodium absorption ratio
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: SARH
Attribute_Definition: Maximum sodium absorption ratio
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: CECL
Attribute_Definition: Lower cation exchange capacity
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: CECH
Attribute_Definition: Higher cation exchange capacity
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:6
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: CACO3L
Attribute_Definition: Minimum percent calcium carbonate
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: CACO3H
Attribute_Definition: Maximum percent calcium carbonate
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:8
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: GYPSUML
Attribute_Definition: Minimum percent sulfate
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 8
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: GYPSUMH
Attribute_Definition: Maximum percent sulfate
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: 9
Enumerated_Domain_Value_Definition: Integer number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: PERML
Attribute_Definition: Minimum permeability (in/hr)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: PERMH
Attribute_Definition: Maximum permeability (in/hr)
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:7
Enumerated_Domain_Value_Definition: Floating point
number
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Attribute:
Attribute_Label: SHRINKSW
Attribute_Definition: Shrink-swell potential upon drying and
wetting
Attribute_Definition_Source: STATSGO Data Users Guide (1993)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value:10
Enumerated_Domain_Value_Definition: Character ID
values
Enumerated_Domain_Value_Definition_Source: USDA\SCS
Overview_Description:
Entity_and_Attribute_Overview:
Map Unit Delineations are closed polygons that are generally
geographic mixtures of groups of soils or soils and nonsoil areas.
The map unit ID uniquely identifies each closed delineation,
map unit. Each map unit ID is linked to a map unit name. The
map unit ID is also the key for linking information in the Map
Unit Interpretations Record tables.
Map Unit Delineations are described by the Map Unit
Interpretations Record data base. This attribute data base
gives the proportionate extent of the component soils and the
properties for each soil. The data base contains both
estimated and measured data on the physical and chemical
soil properties and soil interpretations for engineering,
water management, recreation, agronomic, woodland, range and
wildlife uses of the soil. The Soil Map Unit Interpretations
Record data base consist of the following relational tables;
codes (data base codes) - stores information on all codes
used in the data base
comp (map unit component) - stores information which will
apply to a specific component of a soil map unit
compyld (component crop yield) - stores crop yield
information for soil map unit components
forest (forest understory) - stores information for plant
cover as forest understory for soil map unit components
interp (interpretation) - stores soil interpretation
ratings (both limitation ratings and suitability
ratings) to soil map unit components
layer (soil layer) - stores characteristics which apply to
soil layers for soil map unit components
mapunit (map unit) - stores information which applies to
all components of a soil map unit
plantcom (plant composition) - stores plant symbols and
percent of plant composition associated with components
of soil map units
plantnm (plant name) - stores the common and scientific
names for plants used in the data base
rsprod (range site production) - stores range site
production information for soil map unit components
taxclass (taxonomic classification) - stores the taxonomic
classification for soils in the data base
windbrk (windbreak) - stores information on recommended
windbreak plants for soil map unit components
wlhabit (wildlife habitat) - stores wildlife habitat
information for soil map unit components
woodland (woodland) - store information on common indicator
trees for soil map unit components
woodmgt (woodland management) - stores woodland management
information for soil map unit components
yldunits (yield units) - stores crop names and the units
used to measure yield
For distribution with BASINS v2.0, only comp and layer related
tables are included.
Entity_and_Attribute_Detail_Citation:
See Entity_and_Attribute_Information
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USEPA/Office of Water/OST
Contact_Address:
Address_Type: Mailing Address
Address: 401 M Street, SW (4305)
City: Washington
State_or_Province: District of Columbia
Postal_Code: 20460
Country: USA
Contact_Voice_Telephone: 202-260-7301
Contact_Facsimile_Telephone: 202-260-9830
Hours_of_Service: 9-3 EST
Distribution_Liability:
Although these data have been processed successfully on a computer
system at Tetra Tech, Inc., no warranty expressed or implied is
made regarding the accuracy or utility of the data on any other
system or for general or scientific purposes, nor shall the act of
distribution constitute any such warranty. This disclaimer applies
both to individual use of the data and aggregate use with other
data. It is also strongly recommended that careful attention be
paid to the contents of the metadata file associated with these
data. The U.S. Environmental Protection Agency nor Tetra Tech,
Inc. shall not be held liable for improper or incorrect use of the
data described and/or contained herein.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Environmental Systems Research Institute (ESRI)
ArcView Shapefile
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://www.epa.gov/OST/BASINS
Offline_Option:
Offline_Media: CD-ROM
Recording_Format: ISO 9660
Fees: None
Ordering_Instructions:
When requesting data by phone or mail, please inquire about
spatial data sets that work with Better Assessment Science
Integrating Point and Nonpoint Sources (BASINS). The BASINS web
page has instructions for downloading datasets. It also has a
link to The National Center for Environmental Publications and
Information (NCEPI), from which BASINS CD-ROMs may be ordered.
Each CD-ROM contains the BASINS v2.0 Application and this data
set along with others covering the spatial extent of an EPA
Region.
Metadata_Reference_Information:
Metadata_Date: 19980801
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USEPA/Office of Water/OST
Contact_Address:
Address_Type: Mailing Address
Address: 401 M Street, SW (4305)
City: Washington
State_or_Province: District of Columbia
Postal_Code: 20460
Country: USA
Contact_Voice_Telephone: 202 260 7301
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: 19940608