scounty100: County boundaries of the Southern United States at 1:100,000 scale

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Negri, M.
Originator: Yockey, Edwin
Publication_Date: 2009
Title:
scounty100: County boundaries of the Southern United States at 1:100,000 scale
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Asheville, NC
Publisher: USDA Forest Service, Southern Research Station
Online_Linkage: https://doi.org/10.2737/RDS-2009-0001
Description:
Abstract:
This coverage was identified on the USGS Water Resources NSDI Node site at https://nsdi.usgs.gov. The coverage contains the county boundaries of the continental United States. These boundaries were derived from the Digital Line Graph (DLG) files representing the 1:100,000 scale map in the National Atlas of the United States. The data was then modified by USDA Forest Service Personnel for use in the Southern Forest Resource Assessment and exported to a shapefile.
Purpose:
This shapefile is used as a base map for a variety of applications.
Supplemental_Information:
Metadata was updated 10/1/2009 when data became available through this archive, and again on 2/8/2011 to add a DOI to citation. Data were not altered. Minor metadata updates made on 4/18/2013, 12/20/2016, and 09/09/2021.

Data were originally made available at https://www.srs.fs.usda.gov/sustain/data/.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Currentness_Reference:
Publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown
Spatial_Domain:
Description_of_Geographic_Extent:
The included FIPS and states within the coverage are: 1 AL=Alabama, 5 AR=Arizona, 12 FL=Florida, 13 GA=Georgia, 21 KY=Kentucky, 22 LA=Louisiana, 28 MS=Mississippi, 37 NC=North Carolina, 40 OK=Oklahoma, 45 SC=South Carolina, 47 TN=Tennessee, 48 TX=Texas, 51 VA=Virginia.
Bounding_Coordinates:
West_Bounding_Coordinate: -108.021737
East_Bounding_Coordinate: -74.773082
North_Bounding_Coordinate: 39.961128
South_Bounding_Coordinate: 23.664456
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: counties
Theme_Keyword: Administrative and political boundaries
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: boundaries
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus: National Research & Development Taxonomy
Theme_Keyword: Ecology, Ecosystems, & Environment
Theme_Keyword: Geography
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Southern United States
Place_Keyword: Alabama
Place_Keyword: Arizona
Place_Keyword: Florida
Place_Keyword: Georgia
Place_Keyword: Kentucky
Place_Keyword: Louisiana
Place_Keyword: Mississippi
Place_Keyword: North Carolina
Place_Keyword: Oklahoma
Place_Keyword: South Carolina
Place_Keyword: Tennessee
Place_Keyword: Texas
Place_Keyword: Virginia
Access_Constraints: None
Use_Constraints:
These data can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:

Negri, M.; Yockey, Edwin. 2009. scounty100: County boundaries of the Southern United States at 1:100,000 scale. Asheville, NC: U.S. Department of Agriculture, Forest Service, Southern Research Station. https://doi.org/10.2737/RDS-2009-0001
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service, Southern Research Station
Contact_Person: Mr. John M. Pye
Contact_Position: Ecologist
Contact_Address:
Address_Type: mailing and physical address
Address: USDA Forest Service, SRS4851
Address: 3041 E. Cornwallis Road
City: Research Triangle Park
State_or_Province: NC
Postal_Code: 27709
Country: USA
Contact_Voice_Telephone: 919-549-4013
Contact_Electronic_Mail_Address: jpye@fs.fed.us
Data_Set_Credit:
1) USGS- the original county boundary coverage.
2) USDA Forest Service- modifications to data for use in the Southern Forest Resource Assessment (SFRA).
Security_Information:
Security_Classification: Unclassified
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 3; ESRI ArcCatalog 8.3.0.800
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
All counties are accurately labeled.
Logical_Consistency_Report:
Polygon topology is present.

Assessment-standard projection:
Projection: Albers Equal Area
Units: Meters
Spheroid: GRS80
Datum: NAD83
First Standard Parallel: 27 degrees 30 minutes
Second Standard Parallel: 37 degrees 30 minutes
Central Meridian: -90 degrees 00 minutes
Latitude of Origin: 25 degrees 00 minutes
False Easting: 0.0
False Northing: 0.0
Completeness_Report:
All polygons have been reviewed for attribution accuracy. A quality control inspection has been performed to eliminate any missing or duplicate labels in the shapefile.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
All linear delineations are within National Map Accuracy Standards.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 50.8
Horizontal_Positional_Accuracy_Explanation:
+/-50.8 meters
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Mr. M. Negri, USGS
Publication_Date: 1990
Title:
county100.e00.gz
Geospatial_Data_Presentation_Form: database
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: USGS
Online_Linkage: https://nsdi.usgs.gov
Source_Scale_Denominator: 100000
Type_of_Source_Media: Arc Info export coverage
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1990
Source_Currentness_Reference:
publication date
Source_Contribution:
USGS 1:100,000 county coverage
Process_Step:
Process_Description:
This coverage was identified on the USGS Water Resources NSDI Node site at https://nsdi.usgs.gov. The coverage contains the county boundaries of the continental United States. These boundaries were derived from the Digital Line Graph (DLG) files representing the 1:100,000 scale map in the National Atlas of the United States. The data was then modified by USDA Forest Service Personnel for use in the Southern Forest Resource Assessment (SFRA) and exported to a shapefile.

USGS Process Description:
The data was extracted from Census TIGER/line files stored on 38 compact discs (CD) using the following four step procedure:

1) Copy the data off the TIGER/line CD onto magnetic disc of a Data General 6220 server. The data was copied on a per state basis under an individual directory.

2) Run the data through ARCTIGER.AML which goes as follows:

/* ARCTIGER.AML - An aml that will extract county outer boundary lines from
/* Census TIGER line files and MAPJOIN these lines to create a
/* full state coverage of county lines. Directory must contain
/* albers.prj Projection file.
/* --------------------------------------------------------------------------
/* Read county list from a particular state and set # of iterations to the
/* # of counties.
&args stno state
&setvar countycount [filelist /gis/%stno%[unquote '/*'] county.list -full -dir]
&setvar fileunit [open county.list ostat -r]
&do i = 1 &to %countycount%
/* Read individual TIGER files.
&setvar cty [locase [read %fileunit% rstat]]
&setvar xyz [filelist %cty%/tgr* tigerfiles -full -file]
&setvar filunit [open tigerfiles ostat -r]
&sv fname [locase [read %filunit% rstat]]
&sv statecounty [substr %fname% 16 5]
/* Block TIGER file record 1 and perform SORTTIGER.
&if [after %fname% .] = f21 &then
&sys dd if=%fname% of=line%statecounty% ibs=228 obs=228 cbs=228 conv=unblock
sorttiger 1 line%statecounty% lnsrt%statecounty%
&sv fname [locase [read %filunit% rstat]]
/* Block TIGER file record 2 and perform SORTTIGER.
&if [after %fname% .] = f22 &then
&sys dd if=%fname% of=shape%statecounty% ibs=208 obs=208 cbs=208 conv=unblock
&sv cerr1 [close %filunit%]
sorttiger 2 shape%statecounty% shpsrt%statecounty%
/* Create ARC coverage from blocked and sorted TIGER files using the
/* TIGERARC command.
tigerarc precensus geo%statecounty% lnsrt%statecounty% shpsrt%statecounty%
&sys rm line%statecounty% lnsrt%statecounty% shape%statecounty% ~
shpsrt%statecounty%
build geo%statecounty% line
/* Extract items geo%statecounty%-ID and SOURCE from geo%statecounty%.ACODE
/* datafile and add to geo%statecounty%.AAT
pullitems [translate geo%statecounty%].ACODE PULL
[translate geo%statecounty%]-ID
SOURCE
END
joinitem [translate geo%statecounty%].AAT PULL ~
[translate geo%statecounty%].AAT [translate geo%statecounty%]-ID ~
[translate geo%statecounty%]-ID ORDERED
tables
$kill PULL
q stop
/* Project geo%statecounty% into Albers equal area to create prj%statecounty%,
/* BUILD with LINE, CLEAN with 10 10 POLY and extract outer boundary to create
/* cov%statecounty%.
project cover geo%statecounty% prj%statecounty% albers.prj
build prj%statecounty% line
clean prj%statecounty% gcl%statecounty% 10 10 poly
reselect gcl%statecounty% cov%statecounty% line
RESELECT LPOLY# = 1 OR RPOLY# = 1
[unquote ' ']
n
n
build cov%statecounty% line
build cov%statecounty% poly
/* ADDITEM STATECTY and populate cov%statecounty%.PAT with %statecounty%,
/* calculate cov%statecounty%-ID in the cov%statecounty%.AAT to equal SOURCE
/* so pseudonodes can be deleted with UNSPLIT in ARCEDIT, then set all
/* cov%statecounty%-ID's in cov%statecounty%.AAT to equal
/* cov%statecounty%#.
createlabels cov%statecounty%
build cov%statecounty% poly
additem [translate cov%statecounty%].PAT [translate cov%statecounty%].PAT ~
STATECTY 5 5 I
tables
select [translate cov%statecounty%].PAT
reselect [translate cov%statecounty%]# GT 1
calc STATECTY = %statecounty%
select [translate cov%statecounty%].AAT
reselect SOURCE CN ' '
calc [translate cov%statecounty%]-ID = 0
aselect
reselect SOURCE CN 'A'
calc [translate cov%statecounty%]-ID = 1
aselect
reselect SOURCE CN 'B'
calc [translate cov%statecounty%]-ID = 2
aselect
reselect SOURCE CN 'C'
calc [translate cov%statecounty%]-ID = 3
aselect
reselect SOURCE CN 'D'
calc [translate cov%statecounty%]-ID = 4
aselect
reselect SOURCE CN 'E'
calc [translate cov%statecounty%]-ID = 5
aselect
reselect SOURCE CN 'F'
calc [translate cov%statecounty%]-ID = 6
aselect
reselect SOURCE CN 'G'
calc [translate cov%statecounty%]-ID = 7
q stop
idedit cov%statecounty% line
arcedit
ec cov%statecounty%
ef arcs
select all
unsplit
save
quit
build cov%statecounty% line
build cov%statecounty% poly
tables
select [translate cov%statecounty%].AAT
calc [translate cov%statecounty%]-ID = [translate cov%statecounty%]#
q stop
idedit cov%statecounty% line
kill geo%statecounty% all
kill prj%statecounty% all
kill gcl%statecounty% all
&end
&setvar cerr2 [close %fileunit%]
&sys rm county.list
&sys rm tigerfiles
/* MAPJOIN the individual county coverages to form a full state coverage.
&setvar covercount [filelist cov* covlist -cover -network]
&setvar fileunit [open covlist ostat -r]
mapjoin %state% net features
&do i = 1 &to %covercount%
&setvar cover [read %fileunit% rstat]
%cover%
&end
end
&sys rm covlist
/* Set SOURCE codes equal to cover-ID so pseudonodes can be removed with
/* UNSPLIT in ARCEDIT.
tables
select [translate %state%].AAT
reselect SOURCE CN ' '
calc [translate %state%]-ID = 0
aselect
reselect SOURCE CN 'A'
calc [translate %state%]-ID = 1
aselect
reselect SOURCE CN 'B'
calc [translate %state%]-ID = 2
aselect
reselect SOURCE CN 'C'
calc [translate %state%]-ID = 3
aselect
reselect SOURCE CN 'D'
calc [translate %state%]-ID = 4
aselect
reselect SOURCE CN 'E'
calc [translate %state%]-ID = 5
aselect
reselect SOURCE CN 'F'
calc [translate %state%]-ID = 6
aselect
reselect SOURCE CN 'G'
calc [translate %state%]-ID = 7
q stop
idedit %state% line
arcedit
ec %state%
ef arcs
select all
unsplit
save
quit
build %state% poly
build %state% line
/* Set cover-ID's back to equal cover#.
tables
select [translate %state%].AAT
calc [translate %state%]-ID = [translate %state%]#
q stop
idedit %state% line
/* Remove sliver polygons while retaining SOURCE codes.
createlabels %state% 1001
build %state% poly
pullitems [translate %state%].AAT PULL
[translate %state%]-ID
SOURCE
END
eliminate %state% el%state% # poly
RESELECT [translate %state%]-ID > 1000
[unquote ' ']
n
n
build el%state% line
build el%state% poly
kill %state% all
rename el%state% %state%
joinitem [translate %state%].AAT PULL [translate %state%].AAT ~
[translate %state%]-ID [translate %state%]-ID LINEAR
tables
$kill PULL
q stop
&return

3) Visually check the data for accuracy against the 1:2,000,000 county boundaries. When discrepancies occured, the data was checked against USGS 1:100,000 quad maps.

4) Add data from counties which were missing from the TIGER/line CDs or that could not be converted on the Data General. This was performed by several methods. Each method is followed by a list of counties by STATECTY code in which the data was inserted by that method.

a) Missing or non-convertible counties which were completely surrounded by county boundaries that did convert had a label added to their blank polygon which was tagged with the appropriate STATECTY code.

Missing Counties:

Alabama: 01009, 01013, 01025, 01051,
01053, 01071, 01093, 01121,
and 01125.

Texas: 48105, 48107, 48109, 48155, 48157,
48159.

Utah: 49019, 49027, 49033, 49045, 49053.

Non-convertible Counties:

California: 06001, 06017, 06025, 06049, 06095.

Florida: 12105.

Georgia: 13289, 13305.

Louisiana: 22019, 22079, 22089.

Maine: 23019.

Minnesota: 27055, 27099.

Nevada: 32031.

New York: 36071.

Texas: 48027, 48037, 48121, 48453.

b) Non-convertible counties with a shoreline that were delineated by using the adjacent inland county boundaries and a shoreline obtained from the USGS 1:2,000,000 data set with a buffer to match the buffer of the adjacent Census shoreline. The shorelines of these counties have a SOURCE code in the .AAT file of 'X'.

Alabama: 01097.

California: 06037, 06073.

Florida: 12009, 12071, 12099.

Georgia: 13051.

Louisiana: 22075.

North Carolina: 37053.

South Carolina: 45019.

Texas: 48167, 48245, 48261.

c) The following county boudaries were obtained by processing Census TIGER/line files obtained from the U.S. Environmental Protection Agency (The same procedures were used on this data):

Alabama: 01027, 01035, 01037, 01059, 01073,
01095, 01099, 01115, 01123, 01129,
01133.

Texas: 48101, 48103, 48153.

Utah: 49023, 49025, 49037, 49043, 49047.

d) The following county boundaries were obtained by processing Census TIGER/line files on an IBM
RS6000:

Florida: 12105.

South Carolina: 45053.

Texas: 48253.


Reviews_Applied:
Post-processing data review performed as mentioned above by
Mark Negri.

Data Modifications by USDA Forest Service Staff:
Sept. & Oct.-2000:
The coverages were downloaded by USDA Forest Service personnel on 22-Sep-2000 in compressed Arc Info Export format along with their associated metadata. The coverages were then reprojected to match Assessment standard Albers using the Arc Info PROJECT command, the items were adjusted to one record per county or municipality, and sliver polygons were removed. The coverage was then subsetted to the thirteen Southern states of the Assessment using Arc View's Theme Query tool and state FIPS code, then exported as shapefiles.
Process_Date: 20001017
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service
Contact_Person: Mr. Edwin Yockey
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing address
Address: PO Box 2680
City: Asheville
State_or_Province: NC
Postal_Code: 28801
Country: USA
Contact_Voice_Telephone: 828-257-4857
Contact_Facsimile_Telephone: 828-257-4856
Contact_Electronic_Mail_Address: eyockey@fs.fed.us
Process_Step:
Process_Description:
Metadata imported.
Source_Used_Citation_Abbreviation:
L:\forest\sfra\Revised_Apr_del\metadata delivery for webpage\state_cov_albers\sstates100.xml
Process_Date: Unknown
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Spatial_Data_Organization_Information:
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: 1342
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 27.500000
Standard_Parallel: 37.500000
Longitude_of_Central_Meridian: -90.000000
Latitude_of_Projection_Origin: 25.000000
False_Easting: 0.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.004096
Ordinate_Resolution: 0.004096
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257222
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: scounty100
Attribute:
Attribute_Label: FID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition:
Feature geometry.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Coordinates defining the features.
Attribute:
Attribute_Label: AREA
Attribute_Definition:
The size of the shape in shapefile units.
Attribute_Definition_Source:
ESRI
Attribute:
Attribute_Label: PERIMETER
Attribute_Definition:
The perimeter of the shape in shapefile units.
Attribute_Definition_Source:
ESRI
Attribute:
Attribute_Label: COUNTY100_
Attribute_Definition:
Internal Feature Number.
Attribute_Definition_Source:
Computed
Attribute:
Attribute_Label: STATECTY
Attribute_Definition:
User attributed state and county FIPS code.
Attribute_Definition_Source:
US Geological Survey
Attribute:
Attribute_Label: ST
Attribute_Definition:
Two letter abbreviation for the state (i.e. TX).
Attribute_Definition_Source:
US Geological Survey
Attribute:
Attribute_Label: CNTYNAME
Attribute_Definition:
User attributed county name (i.e. FREDERICK).
Attribute_Definition_Source:
US Geological Survey
Attribute:
Attribute_Label: POLYTYPE
Attribute_Definition:
User defined attribute (i.e. 0 is US Land).
Attribute_Definition_Source:
US Geological Survey
Attribute:
Attribute_Label: FIPS_ST
Attribute_Definition:
User attributed FIPS code for the state.
Attribute_Definition_Source:
US Geological Survey
Attribute:
Attribute_Label: FIPS_CO
Attribute_Definition:
User attributed FIPS code for the county.
Attribute_Definition_Source:
US Geological Survey
Attribute:
Attribute_Label: FIPS
Attribute_Definition:
User attributed state and county FIPS code.
Attribute_Definition_Source:
US Geological Survey
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service, Research and Development
Contact_Position: Research Data Archivist
Contact_Address:
Address_Type: mailing and physical
Address: 240 West Prospect Road
City: Fort Collins
State_or_Province: CO
Postal_Code: 80526
Country: USA
Contact_Voice_Telephone: see Contact Instructions
Contact Instructions: This contact information was current as of September 2021. For current information see Contact Us page on: https://doi.org/10.2737/RDS.
Resource_Description: RDS-2009-0001
Distribution_Liability:
Data Content and Use Disclaimer:

The USDA Forest Service, Southern Forest Resource Assessment or SFRA, provides data to users of digital geographic data. The USDA Forest Service is in no way condoning or endorsing the application of these data for any given purpose. It is the sole responsibility of the user to determine whether or not the data is suitable for the intended purpose. It is also the obligation of the user to apply the data in an appropriate and conscientious manner. The USDA Forest Service provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. Much of the USDA Forest Service data is based on and maintained with Arc Info and Arc View Software developed by the Environmental Systems Research Institute (ESRI). In addition, much of the information presented uses conventions and terms popularized by Arc Info and Arc View and their user community. USDA Forest Service in no way represents the interests of ESRI nor acts as an agent for them.

The metadata, data, or related materials may be updated without notification. If a user believes errors are present in the metadata, data or related materials, please use the information in (1) Identification Information: Point of Contact, (2) Metadata Reference: Metadata Contact, or (3) Distribution Information: Distributor to notify the Forest Service of the issues. Additional information is available at https://www.fs.fed.us/qoi.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SHP
Format_Version_Number: See Format Specification
Format_Specification:
ESRI ArcView shapefile
Format_Information_Content:
Counties within the continental United States
File_Decompression_Technique: Files zipped with 7-Zip 19.0
Transfer_Size: 2.562
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: https://doi.org/10.2737/RDS-2009-0001
Fees: none
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Metadata_Reference_Information:
Metadata_Date: 20210909
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service, Southern Research Station
Contact_Person: Mr. John Pye
Contact_Position: Ecologist
Contact_Address:
Address_Type: mailing and physical address
Address: USDA Forest Service, SRS4851
Address: 3041 Cornwallis Rd.
City: Research Triangle Park
State_or_Province: NC
Postal_Code: 27709
Country: USA
Contact_Voice_Telephone: 919-549-4013
Contact_Electronic_Mail_Address: jpye@fs.fed.us
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: None
Metadata_Use_Constraints:
None
Metadata_Security_Information:
Metadata_Security_Classification: Unclassified
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https://www.fs.usda.gov/rds/archive/products/RDS-2009-0001/_metadata_RDS-2009-0001.html