U.S. Geological Survey --------------------------------------------------------------------------- Metadata for COUNTY Table of Contents Identification_Information Abstract Purpose Supplemental Information Data_Quality_Information Spatial_Data_Organization_Information Entity_and_Attribute_Information Detailed Description Overview Distribution_Information Metadata_Reference_Section --------------------------------------------------------------------------- Identification_Information Citation_Information Originator: Alhadeff, S. Jack Publication_Date: 1996 Title: County Boundaries of Georgia Edition: 1.0 1.1 Datum change from 1927 to 1983 (North American Datum of 1983) Data Re-projected using North American Datum (NAD83) - September 2000 Series_Information Series_Name: Digital Data Series Publication_Information Publication_Place: Atlanta, GA Publisher: U.S. Geological Survey Online_Linkage: http://csat.er.usgs.gov/statewide/layers/county.html Scale_Denominator: 100000 Description Abstract This is a coverage of the county boundaries of the State of Georgia. The data has been extracted from the conterminous United States data layer of county boundaries in Reston, VA by reselecting county polygons containing the Federal Information Processing code for Georgia (13). The original lines were extracted from U.S. Census TIGER/line files using an AML program, written by Doug Nebert and Mark Negri. Keywords: Counties, Boundaries, Georgia, HUC Purpose This coverage is intended as a basemap for any desired GIS application. Supplemental_Information 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. ------------------------------------------------------------------------- 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: Georgia: 13289, 13305. 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. Georgia: 13051. 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): none in Georgia d) The following county boundaries were obtained by processing Census TIGER/line files on an IBM RS6000: none in Georgia 5) Georgia counties were reselected on FIPS:ST = 13 6) Final coverage was projected from a national Albers (central meridian -96.00) to a Georgia Albers with a central meridian of -83.5. Revisions Revision 1.1, 8/16/94. Made coding changes as discovered by EPA: none in Georgia Coverage renamed on October 21, 1997 from county100 to county in preparation for publication to CD-ROM. 6/22/2009 County name 'SPAULDING' changed to the correct spelling of 'SPALDING'. Reviews_Applied Post-processing data review performed as mentioned above by Mark Negri. Colleague review May 1, 1996 by Keith McFadden and Jonathan Musser. Digital data was reviewed with respect to positional accuracy, contextual accuracy, attribute accuracy, topological consistency, and metadata content. Approved by Tim Hale, Georgia District Chief, May 3, 1996. Related_Spatial_and_Tabular_Data_Sets Other_References_Cited _____, 1990, TIGER/Line Files, Precensus Data 1990, Bureau of Census U.S. Department of Commerce, Washington, D.C. _____, 1985, 1:2,000,000-scale digital map of counties, U.S. Geological Survey, Reston, VA Notes none Time_Period_of_Content Single_Date/Time Calendar_Date: 1990 Currentness_Reference as given Status Progress: Approved for release by Tim Hale, Georgia District Chief Maintenance_and_Update_Frequency Irregular. Spatial_Domain Bounding_Coordinates West_Bounding_Coordinate: -85.60520177 East_Bounding_Coordinate: -80.63833514 North_Bounding_Coordinate: 34.98459988 South_Bounding_Coordinate: 30.33161795 Keywords Theme Theme_Keyword_Thesaurus: None Theme_Keyword: County boundaries State Georgia Place Place_Keyword_Thesaurus: None Place_Keyword: State of Georgia Stratum Stratum_Keyword_Thesaurus: None Stratum_Keyword: Temporal Temporal_Keyword_Thesaurus: None Temporal_Keyword: Access_Constraints n/a Use_Constraints: None. Acknowledgement of the U.S. Geological Survey would be appreciated in products derived from these data. Use_Constraints Lines with a SOURCE code of A are from Census 1980 GBF/DIME-files and have a much poorer resolution than lines of all other SOURCE code types. A line types tend to be mostly in urban areas. There are no shorelines in this coverage. Coastal counties have their boundaries extended approximately 3 miles into the ocean. Point_of_Contact: See Data_Set_Credit Bureau of Census, Washington, D.C. U.S. Geological Survey, WRD, Spatial Data Support Unit, Reston, VA Security_Information Security_Classification_System: None Security_Classification: UNCLASSIFIED Security_Handling_Description: None Native_Data_Set_Environment: dgux UNIX, ARC/INFO version 7.0.4 Cross_Reference Originator: U.S. Bureau of Census Publication_Date: 1990 Publication_Time: Title: TIGER Line Files Precensus Data 1990 Edition: Geospatial_Data_Presentation_Form: Series_Information Series_Name: Issue_Identification: Publication_Information Publication_Place: Washington, D.C. Publisher: U.S. Department of Commerce Other_Citation_Details: Online_Linkage: Larger_Work_Citation: --------------------------------------------------------------------------- Data_Quality_Information Attribute_Accuracy Attribute_Accuracy_Report: See Logical_Consistency_Report: Polygon and chain-node topology present. Completeness_Report all available data processed, edited and reviewed. Positional_Accuracy Horizontal_Positional_Accuracy Horizontal_Positional_Accuracy_Report: see TIGER/Line Files users manual Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 40 meters Horizontal_Positional_Accuracy_Explanation: Resolution as reported Vertical_Positional_Accuracy Vertical_Positional_Accuracy_Report: n/a Lineage: See Cloud_Cover n/a --------------------------------------------------------------------------- Spatial_Data_Organization_Information Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information SDTS_Terms_Description SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 159 SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 2762 SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains' Point_and_Vector_Object_Count: 160 --------------------------------------------------------------------------- Spatial_Reference_Information Horizontal_Coordinate_System_Definition Planar Map_Projection: Map_Projection_Name: ALBERS Longitude_of_Central_Meridian: -83.5 Latitude_of_Projection_Origin: 23 Latitude_of_First_Standard_Parallel: 29.5 Latitude_of_Second_Standard_Parallel: 45.5 False_Easting: 0.00000 False_Northing: 0.00000 Geodetic Model Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: GRS 80 Semi-major_Axis: 6,378,206.4 Denominator_of_Flattening: 294.98 --------------------------------------------------------------------------- Entity_and_Attribute_Information Detailed_Description Entity_Type Entity_Type_Label: COUNTY.PAT Entity_Type_Definition: Polygon attribute table Entity_Type_Definition_Source: Census TIGER/line files Attribute: Attribute_Label: AREA Attribute_Definition: Area of polygon in square coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of polygon in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: COUNTY# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: COUNTY-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: STATECTY Attribute_Definition: State/county code Attribute_Definition_Source: Federal Information Processing Standard Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 01001-56999, none = 0 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: CNTYNAME Attribute_Definition: County name Attribute_Definition_Source: U.S. Geological Survey files Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Upper-case alphanumeric Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: POLYTYPE Attribute_Definition: Polygon type Attribute_Definition_Source: See narrative Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 0-2 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: FIPS:ST Attribute_Definition: Standard 2-digit FIPS State code Attribute_Definition_Source: Federal Information Processing Standard Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 01 - 56 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: FIPS:CO Attribute_Definition: Standard 3-digit FIPS County code Attribute_Definition_Source: Federal Information Processing Standard Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 001 - 999 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Entity_Type Entity_Type_Label: COUNTY.AAT Entity_Type_Definition: Arc attribute table Entity_Type_Definition_Source: Census TIGER/line files Attribute: Attribute_Label: FNODE# Attribute_Definition: Internal number of from-node Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: TNODE# Attribute_Definition: Internal number of to-node Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LPOLY# Attribute_Definition: Internal number of polygon to left of arc Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: RPOLY# Attribute_Definition: Internal number of polygon to right of arc Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of arc in coverage units Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Positive real numbers Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: COUNTY# Attribute_Definition: Internal feature number Attribute_Definition_Source: Computed Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Sequential unique positive integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: COUNTY-ID Attribute_Definition: User-assigned feature number Attribute_Definition_Source: User-defined Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: Integer Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: SOURCE Attribute_Definition: Census TIGER/line Source code Attribute_Definition_Source: Census TIGER/line files Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 'A - D, '' '' (blank) & X' Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Attribute: Attribute_Label: BNDYTYPE Attribute_Definition: Boundary type Attribute_Definition_Source: See narrative Attribute_Domain_Values Enumerated_Domain Enumerated_Domain_Value: 0-8 Enumerated_Domain_Value_Definition Enumerated_Domain_Value_Definition_Source: Overview_Description Entity_and_Attribute_Overview Polygon Attributes: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC 1 AREA 4 12 F 3 5 PERIMETER 4 12 F 3 9 COUNTY# 4 5 B - 13 COUNTY-ID 4 5 B - 17 STATECTY 5 5 I - 22 CNTYNAME 23 23 C - 45 POLYTYPE 1 1 I - ** REDEFINED ITEMS ** 17 FIPS:ST 2 2 I - 19 FIPS:CO 3 3 I - Each county is identified by a 5-digit STATECTY code derived from the Federal Information Processing Standard (FIPS) code. The first 2 digits represent the state and the remaining 3 digits represent the county within that state. This code is redefined into 2 separate codes: FIPS:ST, the state FIPS code FIPS:CO, the county FIPS code All polygons are encoded with a CNTYNAME which is a character field (23) containing the name of the county. All polygons are encoded by a POLYTYPE code as follows: 0 - U.S. Land. 1 - U.S. Land w/extensions of counties into the ocean and estuaries. Some boundaries between counties may be arbitrary. Using the FREQUENCY command, the POLYTYPE code breaks down as follows: FREQUENCY POLYTYPE --------- -------- 154 0 (153 counties plus universe polygon) 6 1 (6 counties w/extensions into Atlantic Ocean, Chatham, Bryan, Liberty, McIntosh, Glynn and Camden) Arc Attributes: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC 1 FNODE# 4 5 B - 5 TNODE# 4 5 B - 9 LPOLY# 4 5 B - 13 RPOLY# 4 5 B - 17 LENGTH 4 12 F 3 21 COUNTY# 4 5 B - 25 COUNTY-ID 4 5 B - 29 SOURCE 1 1 C - 30 BNDYTYPE 1 1 I - Each line has a SOURCE code showing where Census obtained the data, except lines with a SOURCE code of X. These lines were added after the TIGER/ line files had been processed (see 4.). The following is a list of SOURCE code types: Value Description ------- ------------------------------------ (Blank) Nondocumented A 1980 GBF/DIME-file B USGS 1:100,000-Scale DLG-3 File D Census Bureau Precensus Update X USGS-WRD Shoreline Buffer Using the FREQUENCY command, the SOURCE code line types break down as follows: FREQUENCY SOURCE LENGTH (meters) --------- ------ --------------- 105 A 1122930.467688 1217 B 4918706.192138 1438 D 7700798.548337 2 X 54846.177734 All arcs are encoded by a BNDYTYPE (boundary type) code as follows (As of 06/24/91, code 0 has not been populated yet): 0 - Coastline of the United States. 1 - State-state border occurring on land. 2 - County-county border, within state, occurring on land. 7 - U.S. Census shoreline buffer (approximately 3 miles). 8 - USGS-WRD shoreline buffer (SOURCE code X). As of 06/21/91, the frequency of BNDYTYPE is as follows: Using the FREQUENCY command, the BNDYTYPE code line types break down as follows (As of 06/21/91), for Georgia (05/01/96) FREQUENCY BNDYTYPE LENGTH --------- -------- ------------- 358 1 1942763.248078 2398 2 11671363.352662 4 7 128308.607422 2 8 54846.177734 Entity_and_Attribute_Detail_Citation: Not Available --------------------------------------------------------------------------- Distribution_Information Distributor Contact_Person_Primary Contact_Person: Jonathan W. Musser Contact_Organization: U.S. Geological Survey Contact_Position: Hydrologist Contact_Address Address_Type: mailing address Address: U.S. Geological Survey 3039 Amwiler Road Suite 130 City: Atlanta State_or_Province: GA Postal_Code: 30360-2824 Country: USA Contact_Facsimile_Telephone: 770-903-9199 Contact_Electronic_Mail_Address: jwmusser@usgs.gov Standard_Order_Process Digital_Form Digital_Transfer_Information Format_Name: ARCE ARC/INFO Export format File_Decompression_Technique: gzip Format_Name: SDTS Spatial Data Transfer Standards (FIPS 173) File_Decompression_Technique: gzip & tar Digital_Transfer_Option Online_Option Computer_Contact_Information Network_Address Network_Resource_Name: http://csat.er.usgs.gov/statewide/layers/county.html --------------------------------------------------------------------------- Metadata_Reference_Section Metadata_Date: 19980109 Metadata_Contact: bdmoudry Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: 19940608 Metadata_Time_Convention: Local Time Metadata_Security_Information: Metadata_Security_Classification_System: None Metadata_Security_Classification: UNCLASSIFIED Metadata_Security_Handling_Description: None --------------------------------------------------------------------------- Last modified: 2008-03-20