Soils, Valuations, Poinsett County, Arkansas

Citation:

Citation Information:

Originator:
U.S. Department of Agriculture, Natural Resources Conservation Service

Publication Date: 20020801
Title: Soils, Valuations, Poinsett County, Arkansas
Geospatial Data Presentation Form: vector digital data
Online Linkage: \\JUPITER\D$\ssurgo\ssurgo_acd_join_final\ssurgo_acd_poinsett.shp

Description:

Abstract:
The Arkansas Assessment Coordination Department (ACD) provides County Assessors in Arkansas a valuation guideline to assist Assessors in valuing rural and agricultural lands within their taxing jurisdiction. These valuation factors are based upon the NRCS County Soil Survey Series data. These datasets were created using valuation data supplied by ACD that were joined to a geographical dataset. The resulting layers include values for Cropland, Rice, Pasture and Timber.
This data set represents general soil properties compiled using the spatial and the tabular data provided by U.S. Department of Agriculture, Natural Resources Conservation Service within the SSURGO version 2 database at the Soil Physics/GIS Laboratory, University of Arkansas. The main tables used to build the tabular data of this layer include: component and mapunit. These tables were joined and written to a new table by a series of SQL statements without modifying the original data.

This data set is a digital soil survey and generally is the most detailed level of soil geographic data developed by the National Cooperative Soil Survey. The information was prepared by digitizing maps, by compiling information onto a planimetric correct base and digitizing, or by revising digitized maps using remotely sensed and other information.

This data set consists of georeferenced digital map data and computerized attribute data. The map data are in a 7.5 minute quadrangle format and include a detailed, field verified inventory of soils and nonsoil areas that normally occur in a repeatable pattern on the landscape and that can be cartographically shown at the scale mapped. A special soil features layer (point and line features) is optional. This layer displays the location of features
too small to delineate at the mapping scale, but they are large enough and contrasting enough to significantly influence use and management. The soil map units are linked to attributes in the National Soil Information System relational database, which gives the proportionate extent of the component soils and their properties.

Purpose:
SSURGO depicts information about the kinds and distribution of soils on the landscape. The soil map and data used in the SSURGO product were prepared by soil scientists as part of the National Cooperative Soil Survey.
Supplemental Information: Digital versions of hydrography, cultural features, and other associated layers that are not part of the SSURGO data set may be available from the primary organization listed in the Point of Contact.

Time Period of Content:

Time Period Information:

Single Date/Time:

Time of Day: Unknown

Currentness Reference: publication date

Status:

Progress: REQUIRED
Maintenance and Update Frequency: REQUIRED: The frequency with which changes and additions are made to the data set after the initial data set is completed.

Spatial Domain:

Bounding Coordinates:

West Bounding Coordinate: -91.039124
East Bounding Coordinate: -90.286377
North Bounding Coordinate: 35.70833
South Bounding Coordinate: 35.438527

Access Constraints: None
Use Constraints:
The U.S. Department of Agriculture, Natural Resources Conservation Service, should be acknowledged as the data source in products derived from these data.
This data set is not designed for use as a primary regulatory tool in permitting or citing decisions, but may be used as a reference source. This is public information and may be interpreted by organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application. Federal, State, or local regulatory bodies are not to reassign to the Natural Resources Conservation Service any authority for the decisions that they make. The Natural Resources Conservation Service will not perform any evaluations of these maps for purposes related solely to State or local regulatory programs.

Photographic or digital enlargement of these maps to scales greater than at which they were originally mapped can cause misinterpretation of the data. If enlarged, maps do not show the small areas of contrasting soils that could have been shown at a larger scale. The depicted soil boundaries, interpretations, and analysis derived from them do not eliminate the need for onsite sampling, testing, and detailed study of specific sites for intensive uses. Thus, these data and their interpretations are intended for planning purposes only. Digital data files are periodically updated. Files are dated, and users are responsible for obtaining the latest version of the data.

Point of Contact:

Contact Information:

Contact Organization Primary:

Contact Organization:
U.S. Department of Agriculture, Natural Resources Resources Conservation Service

Contact Position: State Soil Scientist
Contact Address:

Address Type: mailing address
Address: 700 West Capitol Ave., Federal Bldg, Room 3416
City: Little Rock
State or Province: Arkansas
Postal Code: 72201

Contact Voice Telephone: 501-301-3116, 479-575-3590
Contact Facsimile Telephone: 501-301-3189, 479-575-7465

Native Data Set Environment: Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.2.0.700

Attribute Accuracy:

Attribute Accuracy Report:
Attribute accuracy is tested by manual comparison of the source with hard copy plots and/or symbolized display of the map data on an interactive computer graphic system. Selected attributes that cannot be visually verified on plots or on screen are interactively queried and verified on screen. In addition, the attributes are tested against a master set of valid attributes. All attribute data conform to the attribute codes in the signed classification and correlation document and amendment(s).
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 soil survey area and edge locations generally do not deviate from centerline to centerline by more than 0.01 inch. The soil survey boundary is edge matched to the adjacent Craighead County Soil Survey, the Crittenden County Soil Survey, the Cross County Soil Survey, the Jackson County Soil Survey and the Mississippi County Soil Survey. Feature edges of this soil survey are edged matched to the adjacent Craighead County Soil Survey, the Critttenden County Soil Survey, the Cross County Soil Survey, the Jackson County Soil Survey, and the Mississippi County Soil Survey. Feature labels do not match.
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 or more components.
Soil scientists identify small areas of soils or miscellaneous (nonsoil) areas that have properties and behavior significantly different than the named soils in the surrounding map unit. These minor components may be indicated as special features. If they have a minimal effect on use and management, or could not be precisely located, they may not be indicated on the map.

Specific National Cooperative Soil Survey standards and procedures were used in the classification of soils, design and name of map units, and location of special soil features. These standards are outlined in Agricultural Handbook 18, Soil Survey Manual, 1993, USDA, SCS; Agricultural Handbook 436, Soil Taxonomy, Soil Survey Staff, 1975, USDA, SCS; and all Amendments; Keys to Soil Taxonomy, Soil Survey Staff, (current issue); National Soil Survey
Handbook, title 430-VI, (current issue).

The actual composition and interpretive purity of the map unit delineations were based on data collected by scientists during the course of preparing the soil maps. Adherence to National Cooperative Soil Survey standards and procedures is based on peer review, quality control, and quality assurance. Quality control is outlined in the memorandum of understanding for the soil survey area and in documents that reside with the Natural
Resources Conservation Service state soil scientist. Four kinds of map units are used in soil surveys: consociations, complexes, associations, and undifferentiated groups.

Consociations - Consociations are named for the dominant soil. In a consociation, delineated areas are dominated by a single soil taxon and similar soils. At least one half of the pedons in each delineation are of the same soil component so similar to the named soil that major interpretations are not affected significantly. The total amount of dissimilar inclusions of other components in a map unit generally does not exceed about 15 percent if limiting and 25 percent if nonlimiting. A single component of a dissimilar limiting inclusion generally does not exceed 10 percent if very contrasting.

Complexes and associations - Complexes and associations are named for two or more dissimilar components with the dominant component listed first. They occur in a regularly repeating pattern. The major components of a complex cannot be mapped separately at a scale of about 1:24,000. The major components of an association can be separated at a scale of about 1:24,000. In each delineation of either a complex or an association, each major component is normally present, though their proportions may vary appreciably from one delineation to another. The total amount of inclusions in a map unit that are dissimilar to any of the major components does not exceed
15 percent if limiting and 25 percent if nonlimiting. A single kind of dissimilar limiting inclusion usually does not exceed 10 percent.

Undifferentiated groups - Undifferentiated groups consist of two or more components that do not always occur together in the same delineation, but are included in the same named map unit because use and management are the same or similar for common uses. Every delineation has at least one of the major components and some may
have all of them. The same principles regarding proportion of inclusions apply to undifferentiated groups as to consociations.

Minimum documentation consists of three complete soil profile descriptions that are collected for each soil added to the legend, one additional per 3,000 acres mapped; three 10 observation transects for each map unit, one additional 10 point transect per 3,000 acres.

A defined standard or level of confidence in the interpretive purity of the map uni

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 soil boundaries and special soil features locations 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, on long gently sloping landscapes the transition occurs gradually over many feet. Where landscapes change abruptly from steep to level, the transition will be very narrow. Soil delineation boundaries and special soil features generally were digitized within 0.01 inch of their locations on the digitizing source. The digital map elements are edge matched between data sets. The data along each quadrangle edge are matched against the data for the adjacent quadrangle. Edge locations generally do not deviate from centerline to centerline by more than 0.01 inch.

Lineage:

Process Step:

Process Description: Dataset copied.

Cloud Cover: 0

Direct Spatial Reference Method: Vector
Point and Vector Object Information:

SDTS Terms Description:

SDTS Point and Vector Object Type: G-polygon
Point and Vector Object Count: 2654

Horizontal Coordinate System Definition:

Geographic:

Latitude Resolution: 0
Longitude Resolution: 0
Geographic Coordinate Units: Decimal degrees

Geodetic Model:

Horizontal Datum Name: North American Datum of 1927
Ellipsoid Name: Clarke 1866
Semi-major Axis: 6378206.4
Denominator of Flattening Ratio: 294.978698

Detailed Description:

Entity Type:

Entity Type Label: ssurgo_acd_poinsett
Entity Type Definition: Special Soil Features represent soil, nonsoil, or landform features that are too small to be digitized as soil delineations (area features).
Entity Type Definition Source: U.S. Department of Agriculture. 1993. Soil Survey Manual. Soil Surv. Staff, U.S. Dep. Agric. Handb. 18.

Attribute:

Attribute Label: CLASS

Attribute:

Attribute Label: COUNTY

Attribute:

Attribute Label: CROP

Attribute:

Attribute Label: FID

Attribute:

Attribute Label: MAP_SYMBOL

Attribute:

Attribute Label: NUMBER

Attribute:

Attribute Label: PASTURE

Attribute:

Attribute Label: RISE

Attribute:

Attribute Label: SOIL NAME

Attribute:

Attribute Label: Shape

Attribute:

Attribute Label: TIMBER

Overview Description:

Entity and Attribute Overview:
Map Unit Delineations are closed polygons that may be dominated by a single soil or nonsoil component plus allowable similar or dissimilar soils, or they can be geographic mixtures of groups of soils or soils and nonsoil areas.
The map unit symbol uniquely identifies each closed delineation map unit. Each symbol is linked to a map unit name. The map unit symbol is also the key for linking information in the National Soil Information System tables. The map unit symbols are not carried within the modified Digital Line Graph file; however, they are made available in a companion attribute file. The attribute file links the minor codes in the Digital Line Graph files to the map unit symbols.

Map Unit Delineations are described by the National Soil Information System database. This attribute database gives the proportionate extent of the component soils and the properties for each soil. The database 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 National Soil Information System database contains static metadata. It documents the data structure and includes such information as what tables, columns, indexes, and relationships are defined as well as a variety of attributes of each of these database objects. Attributes include table and column descriptions and detailed domain information.

The National Soil Information System database also contains a distribution metadata. It records the criteria used for selecting map units and components for inclusion in the set of distributed data.

Entity and Attribute Detail Citation:
U.S. Department of Agriculture. 1999. 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. (current issue). Keys to Soil Taxonomy. Soil Surv. Staff, Soil Conserv. Serv.

U.S. Department of Agriculture. (current issue). National Soil Survey Handbook, title 430-VI. Soil Surv. Staff, Natural Resources Conservation Service.

U.S. Department of Agriculture. 1993. Soil Survey Manual. Soil Surv. Staff, U.S. Dep. Agric. Handb. 18.

Distributor:

Contact Information:

Contact Organization Primary:

Contact Organization:
U.S. Department of Agriculture, Natural Resources Resources Conservation Service

Contact Position: State Soil Scientist
Contact Address:

Address Type: mailing address
Address: 700 West Capitol Ave., Federal Bldg, Room 3416
City: Little Rock
State or Province: Arkansas
Postal Code: 72201

Contact Voice Telephone: 501-301-3116, 479-575-3590
Contact Facsimile Telephone: 501-301-3189, 479-575-7465

Resource Description: Downloadable Data
Distribution Liability:
Neither the University of Arkansas, nor the Soil Physics/GIS Laboratory at the Crop, Soil, and Environmental Sciences Department make any warranty for the accuracy, completeness, or usefulness for any information, product or process disclosed in this material or resent that its use would infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the University of Arkansas or the Soil Physics/GIS Laboratory.
Data may have been derived from federal agencies or other external sources and in those cases where the data has been translated from one format to another or initially developed from maps or other sources the Soil Physics/GIS Laboratory has made all the reasonable efforts to preserve the data quality as originally developed, however no warranty, expressed or implied, is made by the Soil Physics/GIS Laboratory as to the completeness or accuracy of the data and related materials. The act of distribution does not constitute any such warranty, and no responsibility is assumed by the Soil Physics/GIS Laboratory in the use of this data, or related material.

Although these data have been processed successfully on a computer system at the U.S. Department of Agriculture, no warranty expressed or implied is made by the Agency regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. The U.S. Department of Agriculture will warrant the delivery of this product in computer readable format, and will offer appropriate adjustment of credit when the product is determined unreadable by correctly adjusted computer input peripherals, or when the physical medium is delivered in damaged condition. Request for adjustment of credit must be made within 90 days from the date of this shipment from the ordering site.

The U.S. Department of Agriculture, nor any of its agencies are liable for misuse of the data, for damage, for transmission of viruses, or for computer contamination through the distribution of these data sets. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.)

Standard Order Process:

Digital Form:

Digital Transfer Information:

Fees: The charge is $50 for a CD-ROM that contains one or more data sets. A data set is one soil survey area in full quadrangle format and includes both spatial and attribute data.
Ordering Instructions:
Call or write to organizations listed under Distributor. Spatial line data and locations of special feature symbols are in DLG-3 optional format, ARC/INFO coverage and export formats, and ArcView shapefile format. Digital line graph files contain major and minor code pairs in area and line records. A conversion legend is provided for each digital line graph file. Soil map symbols and special feature labels are available in a companion ASCII attribute file. The National Soil Information System attribute soil data are available in variable length, pipe delimited, ASCII file format.
Turnaround: 10 working days

Available Time Period:

Time Period Information:

Single Date/Time:

Time of Day: Unknown

Metadata Date: 5/9/2003
Metadata Review Date:
Metadata Future Review Date:
Metadata Contact:

Contact Information:

Contact Organization Primary:

Contact Organization: REQUIRED: The organization responsible for the metadata information.
Contact Person: REQUIRED: The person responsible for the metadata information.

Contact Address:

Address Type: REQUIRED: The mailing and/or physical address for the organization or individual.
City: REQUIRED: The city of the address.
State or Province: REQUIRED: The state or province of the address.
Postal Code: REQUIRED: The ZIP or

Contact Voice Telephone: REQUIRED: The telephone number by which individuals can speak to the organization or individual.

Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version: FGDC-STD-001-1998
Metadata Time Convention: local time
Metadata Extensions:

Online Linkage: http://www.esri.com/metadata/esriprof80.html
Profile Name: ESRI Metadata Profile