Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Dept. of Commerce, Bureau of Census and dataset modifications by Mr. Ed Yockey, USDA Forest Service
Publication_Date: 2000
Title: fcounty100
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Salt Lake City, UT
Publisher: USDA Forest Service
Other_Citation_Details: file name: fcounty100.shp
Online_Linkage:
Description:
Abstract:
This coverage was identified on the USGS Water Resources NSDI Node site at http://nsdi.usgs.gov. The coverage contains the 1:100,000 scale County boundaries of the continental United States. These boundaries were extracted from TIGER/line Precensus Files,1990 (please see USGS_Procedures_Used in process step description p. 4-8).
The data was then modified by USDA Forest Service Personnel for use in the Southern Forest Resource Assessment and exported to a shapefile (please see USDA Forest Service Modifications in process step description p.8).
Purpose: This shapefile is used as a base map for a variety of applications.
Supplemental_Information: The included counties in the coverage are within the following states: AL, AR, FL, GA, KY, LA, MS, NC, OK, SC, TN, TX, and VA. However please note that counties in central and western Texas and Oklahoma where FIA does not collect data were dropped from the coverages. FIA also does not conduct surveys in several counties in coastal Louisiana and Florida but these counties were retained in the coverage.
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:
Bounding_Coordinates:
West_Bounding_Coordinate: -97.104246
East_Bounding_Coordinate: -74.773082
North_Bounding_Coordinate: 39.961157
South_Bounding_Coordinate: 23.957495
Keywords:
Theme:
Theme_Keyword: counties
Theme_Keyword: boundaries
Theme_Keyword: Administrative and political boundaries
Access_Constraints: None
Use_Constraints: None. The USDA Forest Service does not guarantee the accuracy of this data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA-Forest Service
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 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
Browse_Graphic:
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
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 meters
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: All linear delineations are within National Map Accuracy Standards.
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: +/- 25 meters
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Mr. M. Negri, USGS
Publication_Date: 1990
Title: county100.e00.gz
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: USGS
Other_Citation_Details: file: county100.e00.gz
Online_Linkage:
Source_Scale_Denominator: 1:100,000
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 Counties coverage
Process_Step:
Process_Description:
This coverage was identified on the USGS Water Resources NSDI Node site at http://nsdi.usgs.gov. The coverage contains the counties boundaries of the continental United States. These boundaries were extracted from TIGER/line Precensus Files,1990 (please see below USGS_Procedures_Used referenced from USGS metadata).
USGS_Procedures_Used: 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 occurred, 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, 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 boundaries 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.
Revisions: Revision 1.1, 8/16/94. Made a coding change as discovered by EPA: 1. A New Mexico county polygon coded FIPS = 35006, La Paz should be FIPS = 35006, Cibola. Revision by Mark Negri, mnegri@usgs.gov, 703-648-5613 Process_Date 8/16/94 Reviews_Applied_to_Data: Post-processing data review performed as mentioned above by Mark Negri.
Related_Spatial_and_Tabular_Data_Sets:
Other_References_Cited: Lines with SOURCE code type 'X' were obtained by buffering USGS 1:2,000,000-scale digital map of counties, 1985.
USDA Forest Service Modifications:
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 geographic using the Arc Info PROJECT command, subsetted to the thirteen Southern states of the Assessment using Arc View's Theme Query tool and state FIPS code, then exported as shapefiles.
14-NOV-2000:
In early November 2000 two problems were discovered with the two county coverages:
1. slivers were found associated with Virginia county boundaries, these were manually edited and removed
2. multiple records per county or municipality interfered with join operations and subsequent analyses, these were similarly identified and removed.
Both operations were performed on the geographic-projected shapefiles and renamed as scty100 and scty2m. These have replaced the USGS county coverages on the Assessment web site. Shortly after these errors were corrected, two additional coverages were created from scty100 and scty2m to address problems specific to mapping and analysis of FIA data. Particularly relevant in Virginia, FIA aggregate forest information for most of the independent municipalities into one of the adjoining counties. To match this tabular data, a coverage was created which reflected FIA's incorporation into counties of the various municipalities. Some of the largest municipalities are still tracked separately by FIA, these polygons were retained. Additionally, counties in central and western Texas and Oklahoma where FIA does not collect data were dropped from the coverages. FIA also does not conduct surveys in several counties in coastal Louisiana and Florida but these were retained in the coverage. The coverages were saved as fcty100 and fcty2m.
Process_Date: 14-Nov-2000
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\download_data\fia_county\albers\cnty100\fcounty.xml
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: 1036
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: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: fcounty100
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: The combined state and county FIPS zone
Attribute_Definition_Source: US Geological Survey
Attribute:
Attribute_Label: ST
Attribute_Definition: User attributed two letter abbreviations for the state (i.e. TX)
Attribute_Definition_Source: US Geological Survey
Attribute:
Attribute_Label: CNTYNAME
Attribute_Definition: User attributed county name
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 state FIPS zone
Attribute_Definition_Source: US Geological Survey
Attribute:
Attribute_Label: FIPS_CO
Attribute_Definition: User attributed county FIPS code
Attribute_Definition_Source: US Geological Survey
Attribute:
Attribute_Label: FIPS
Attribute_Definition: The combined state and county FIPS zone
Attribute_Definition_Source: US Geological Survey
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA-Forest Service
Contact_Person: Mr. John Pye
Contact_Position: Ecologist
Contact_Address:
Address_Type: mailing and physical address
Address: USDA Forest Service, SRS4851
Address: 3041 E. 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
Resource_Description: Downloadable Data
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: .shp
Format_Version_Number: Arc View Shapefile
Format_Specification: Arc View
Format_Information_Content: FIA Counties within the continental United States
File_Decompression_Technique: zip file
Transfer_Size: 2.562
Metadata_Reference_Information:
Metadata_Date: 20041117
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA-Forest Service
Contact_Person: Mr. John Pye
Contact_Position: Ecologist
Contact_Address:
Address_Type: mailing and physical address
Address: USDA Forest Service, SRS4851
Address: 3041 E. 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 Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Classification: Unclassified
Metadata_Extensions:
Online_Linkage: http://www.srs.fs.usda.gov/econ
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile