A Division of the Georgia Department of Natural Resources

Municipal Public Supply Wells within the State of Georgia

PERMITTED THROUGH DECEMBER 1999

Georgia Department of Natural Resources
Environmental Protection Division
 

Atlanta
2000

DOCUMENTATION REPORT 00-24

Table of Contents

OVERVIEW iii

GLOSSARY iv

PART A - GENERAL DESCRIPTION OF THE GIS DATABASE: 1

1.0 Identification/Background Information 2

2.0 Data Quality 2

2.1 Attribute Accuracy 2 2.2 Logical Consistency 3

2.3 Completeness 3

2.4 Positional Accuracy 3

2.5 Lineage 3

3.0 Spatial Data Organization Information 4 4.0 Spatial Reference Information 4

5.0 Entity and Attribute Information 4

6.0 Distribution Information 4

7.0 Metadata Reference Information 5

APPENDIX A - SIGNATURE 6

PART B - TECHNICAL DESCRIPTION OF THE GIS DATABASE: 11

PART C - THE DIGITAL FILES CONTAINING THE GIS DATABASE: 22

Summary of Contents of Diskette Diskette Jacket

 

OVERVIEW

A documentation report follows the "Content Standards for Digital Geospatial Metadata" (Standards) developed by the Federal Geographic Data Committee (FGDC), published June 8, 1994. As a convenience, Parts A and B employ the outline/headings contained in the Standards. Parts A and B are printed on paper and Part C is composed of digital products. Part B meets the technical requirements of the Standards. This document is a three_part documentation report for a Geographic Information System (GIS) database developed, with Arc/Info software, by the Geologic Survey Branch, Environmental Protection Division of the Georgia Department of Natural Resources. Part A is intended as a general purpose summary of the database. Part B is a more technical section included primarily for the benefit of GIS processors. Part C contains the digital products, the database and the associated documentation, which includes a copy of this publication.

The digital documentation in Part C contains two copies of this publication. One digital copy is stored as an ASCII file, WELLS-GA.TXT. The other copy is in rich text format, WELLS-GA.RTF. The digital database in Part C consists of an Arc/Info Export file WELLS.E00. Copy the Arc/Info Export file into a directory where you want it and then run the Arc/Info Import command. See Part C of this document for a complete list of the diskette's contents and for data file size.

The digital files are written to one 1.44 MB High Density data diskette. A directory of the files and a short explanation is contained in the ASCII file README.TXT on the data diskette.

This database was developed to satisfy specific project purposes. Users are advised to read the entire Documentation Report and to evaluate the suitability and limitations of the database for the user's purposes.

 

GLOSSARY

Arc/Info: a popular GIS software, used by the GSB. ASCII: abbreviation for `American Standard Code for Information Interchange. A set of codes for representing alphanumeric information in a format which any computer can read.

attribute: a characteristic of a geographic feature. For example, if the geographic feature is a river, then the attributes of the river are the river name, the flow rate, the chemical history, etc.

attribute accuracy: a measure of how well the reported characteristics actually match the real_world characteristics of a geographic feature.

Compact Disk Read Only Memory (CDROM): an optical media which can store 650 Mb of information.

completeness: a description of the relation between the items represented in the database and the real world. For example, if a database contains water wells in Georgia, does it contain all the water wells in Georgia, or a defined subset of wells? If the database contains a defined subset of wells, does it contain every well in Georgia that meets the definition by which the subset was chosen?

Content Standards for Digital Geospatial Metadata: a standard developed by the FGDC which specifies the information content of metadata for a set of digital geospatial data.

database: a logical collection of interrelated information, managed and stored as a unit on a computer or other storage media. A GIS database includes data about the spatial location and shape of geographic features recorded as points, lines, areas, as well as their attributes.

decimal degrees: a unit of measure for geographic coordinates. The conversion formula for decimal degrees is: Decimal Degrees = Degrees + Minutes/60 +Seconds/3600

Department of Natural Resources (DNR): a department of the government of the State of Georgia.

digital: refers to the process of conversion of information into machine language so that a computer can read, write, store, and process the information.

Digital Line Graph (DLG): computer files from the USGS which contain digital maps of transportation, hydrography, contours, and public land survey boundaries.

digital maps: a map is an abstract representation of the physical features of a portion of the Earth's surface graphically displayed on a piece of paper. When that piece of paper is converted into a form which the computer can use, the map is then digital.

diskette: a storage medium, usually measuring 3.5 inches in diameter, which is used to store or transfer information from one computer to another.

Federal Geographic Data Committee (FGDC): an inter_governmental committee established through the Office of Management and Budget and charged with the responsibility to coordinate various surveying, mapping, and spatial data activities to meet the needs of the Nation.

Geographic Information System (GIS): an organized collection of computer hardware, software, geographic data, and personnel designed to efficiently capture, store, update, manipulate, analyze, and display all forms of geographically referenced information.

label points: a single x,y coordinate which identifies an area, and holds a place in the database wherein the area's attribute information is stored.

latitude, longitude: a geographic reference system to locate positions on the Earth. Latitude and longitude are angles measured from the Earth's center to the position on the Earth's surface. Latitude measures angles in a north_south direction, while longitude measure angles in the east_west direction.

lineage: information about the events, parameters, and source data which constructed a geographic database, and information about the responsible parties.

logical consistency: an explanation of the fidelity of the relationships in the database. For example, for a geographic area, do the vector lines which create area boundaries join to encircle the area with no gaps? Or for example, for a particular attribute, are all the values given within a valid range?

longitude, latitude: see latitude, longitude.

metadata: information about the content, quality, condition, and other characteristics of a database.

National Map Accuracy Standards: a set of standards developed by the USGS which states the level of accuracy required for a map product of a particular scale.

pkzip: a popular data compression software.

positional accuracy: an assessment of how well the reported position of a geographic feature represents the real_world position.

United States Geological Survey (USGS): a branch of the United States Department of Interior.

Rich Text Format (RTF): an interchange format from Microsoft for the exchange of documents between Word and other document preparation (Word processing) systems.

vector lines: lines which are described by x,y coordinates and are commonly used to represent linear geographic features. Each linear feature is represented as an ordered list of vertices.

PART A - GENERAL DESCRIPTION OF THE GIS DATABASE:

MUNICIPAL PUBLIC SUPPLY WELLS WITHIN THE STATE OF GEORGIA,
PERMITTED THROUGH DECEMBER 1999

1.0 Identification/Background Information

This GIS database, Municipal Public Supply Wells, contains positional data representing the groundwater wells that supplied water to city and co unty water systems in Georgia during 1999. The data were obtained primarily from two existing GIS databases, and were supplemented with data collected specifically for this municipal well database. The resulting database includes the 1408 wells permitted by EPD on December 31, 1999. A list of wells permitted on that date was provided to GSB by associates of EPD's Watershed Protection Branch.

The three sources of data were: (1) a Geologic Survey Branch (GSB) published GIS database - Documentation Report 97-09: Municipal Public Supply Wells in Georgia, 1993, (2) a GSB published GIS database – Documentation Report 00-13: Data from Georgia's Wellhead Protection Plans Completed through December 1999, and (3) unpublished data collected by the Geologic Survey Branch. The facility locations for the supplemental data were obtained by GSB personnel utilizing global positioning satellite (GPS) receivers for data collection. The GPS data were corrected for various errors inherent in GPS coordinates by post processing using differential correction software. The corrected coordinates were entered into a spreadsheet database. Information in the database includes the water system name, well number, water system identification number, county location, latitude and longitude coordinates (in degrees, minutes, seconds) for the well head, datum, data collection method, and data source. The manufacturer's specifications for the GPS receiver state a horizontal positional accuracy of +/_ 5 meters after differential corrections have been applied. The database is intended for use at a scale of 1:24,000, or smaller. The database is current through December 31, 1999.

2.0 Data Quality

This section contains information about the lineage, positional accuracy, attribute accuracy, logical consistency, and completeness of the database.

2.1 Attribute Accuracy

Attribute information for the two previously published databases was taken directly from those databases. Please refer to the documentation reports accompanying those databases for a discussion of attribute accuracy.

For unpublished data collected by GSB personnel:

Facility latitude-longitude coordinates were determined in the field by GSB personnel utilizing global positioning satellite receivers for data collection while occupying the well head, or an alternate location if the well head location was inaccessible. The coordinates were corrected for various errors inherent in numbers determined by GPS instruments, by post processing the coordinate values using differential-correction software. The corrected data were entered into a spreadsheet database. The manufacturer's specifications for the GPS receiver state a horizontal positional accuracy of +/_ 5 meters after differential corrections have been applied. The database is intended for use at a scale of 1:24,000, or smaller.

2.2 Logical Consistency

Facility locations were overlaid with an existing county political boundary database to ensure spatial accuracy.

2.3 Completeness

This database contains all of the 1408 municipal public-supply wells in Georgia operating under EPD permits in 1999. The database is current for permits issued by the Watershed Protection Branch of EPD through December 31, 1999.

2.4 Positional Accuracy

Municipal public supply well facilities were visited by GSB personnel utilizing a global positioning satellite (GPS) receiver for data collection. GPS data files were collected while occupying the well head, or other location if the well head is inaccessible. The coordinates were corrected for various errors inherent in numbers determined by GPS instruments, by post processing the coordinate values using differential-correction software. The corrected coordinates were entered into a spreadsheet database. The manufacturer's specifications for the GPS receiver state a horizontal positional accuracy of +/_ 5 meters after differential corrections have been applied. The database is intended for use at a scale of 1:24,000 or smaller.

2.5 Lineage

The data were obtained primarily from two existing GIS databases, and were supplemented with data collected specifically for this municipal well database. The resulting database includes the 1408 wells permitted by EPD on December 31, 1999. A list of wells permitted on that date was provided to GSB by associates of EPD ' s Watershed Protection Branch. The two GIS databases were developed and published by the Geologic Survey Branch, as follows: Municipal Public Supply Wells in Georgia, 1993 (Documentation Report 97-09), and Data From Georgia's Wellhead Protection Plans Completed Through December 1999, (Documentation Report 00-13). For the supplemental data, Geologic Survey Branch personnel visited each municipal public supply well facility. For each facility, a water system name, water system identification number, well number, address, county, river basin, and facility contact information were copied by GSB personnel from the source tables and manually entered onto a field data sheet. A field data sheet was taken to each facility, where a GPS file name, date, time, location occupied , an uncorrected GPS latitude-longitude coordinate (from the GPS receiver), and other field notes as necessary were added. In the office, GPS data files were downloaded from the GPS receivers to a personal computer, and differential correction post-processing was done utilizing Trimble's PFINDER software. Base station data were downloaded to the personal computer via the Internet from a U.S. Forest Service GPS Base Station web page. The GPS base station is located in downtown Atlanta, Georgia. Each diff e rentially corrected latitude-longitude coordinate was then written on the field data sheet and compared to the uncorrected GPS coordinate collected in the field. Data from the field data sheets were then typed into a Microsoft Excel spreadsheet and saved i n a dbase file format. The data from the two previously published databases were then merged into a master spreadsheet along with the field-collected data, and saved as a dbase file. The dbase file was converted to an INFO database utilizing a program c a lled dbaseinfo, which converts a dbase file into an INFO database. The info database was converted to two separate point coverages, based on the datum that the latitude-longitude coordinate was stored in. The final step required to produce a single stat e wide coverage was to use the Arc/Info command Append to join the separate point databases together.

3.0 Spatial Data Organization Information

This database contains all of the 1408 municipal public-supply wells in Georgia operating under EPD permits in 1999. The database is current for permits issued by the Watershed Protection Branch of EPD through December 31, 1999. The facilities are represented digitally as 1408 entity points.

4.0 Spatial Reference Information

This database is stored in the Albers Conic Equal Area projection with units in meters. Further information on the specific parameters used can be found in Part B, Section 4.0.

5.0 Entity and Attribute Information

This database contains locations and associated information for 1408 permitted municipal public supply wells within the state of Georgia. Information in the database includes the water system name, water system identification number, well number, county location, latitude and longitude coordinates (in degrees, minutes, seconds) for the well head, datum, data collection method, and data source. The facility locations were obtained from two GIS databases compiled by the GSB: Municipal Public Supply Wells in Georgia, 1993 (Documentation Report 97-09), and Data From Georgia's Wellhead Protection Plans Completed Through December 1999, (Documentation Report 00-13), and by GSB personnel utilizing global positioning satellite receivers for data collection. The coordinates were corrected for various errors inherent in numbers determined by GPS instruments, by post processing the coordinate values using differential-correction software. Corrected values were entered into a spreadsheet database.

6.0 Distribution Information

This database is maintained by the GSB in their Technical Files, and is referenced as Municipal Public Supply Wells within the State of Georgia, Permitted through December 31, 1999.

7.0 Metadata Reference Information

The metadata is incorporated within this publication, DOCUMENTATION REPORT 00-24. Part B, the Technical Section of this publication, meets the "Content Standards for Digital Geospatial Metadata" as published by the Federal Geographic Data Committee in 1994.

APPENDIX A - SIGNATURE

Signatures for Municipal Public Supply Wells within the State of Georgia, Permitted through

December 31, 1999

Preparation of Database and Documentation Report

Prepared by: ________________________ (Signed) ___________________

__Victoria P. Trent______ (Printed) (Date Signed)

_Senior Geologist_______ (Title)

Checked by: ________________________ (Signed) ___________________

_Alan Sandercock____________ (Printed) (Date Signed)

_Senior Geologist__________(Title)

********************

DATA SOURCE

Prepared by: ________________________ (Signed) ___________________

__Victoria P. Trent________ (Printed) (Date Signed)

___Senior Geologist_______ (Title)

Checked by: ________________________ (Signed) ___________________

__Alan Sandercock_____________(Printed) ( Date Signed)

__Senior Geologist_____________(Title)

Checked by: ________________________ (Signed) ____________________

_Susan L. Grunwald__________________ (Printed) (Date Signed)

_Program Manager___________________(Title)

Originator:__ ________________________ (Signed) ____________________

Charles Williams_____________________ (Printed) (Date Signed)

_Program Manager_I - WRB____________(Title)

********************

AUTHORIZATION

The Geologic Survey Branch of the Environmental Protection Division of the Georgia Department of Natural Resources approves of the release of the GIS database as presented in Parts A, B, and C of the accompanying documentation report.

Authorized by: ________________________ (Signed) ___________________

_____B. Roger Carter______ (Printed) (Date Signed)

Assistant Branch Chief (Title)

 

PART B - TECHNICAL DESCRIPTION OF THE GIS DATABASE:

MUNICIPAL PUBLIC SUPPLY WELLS WITHIN THE STATE OF GEORGIA,
PERMITTED THROUGH DECEMBER 1999

Identification_Information:

Citation:

Citation_Information:

Originator:

Geologic Survey Branch, Environmental Protection Division, Georgia Department of Natural Resources

Publication_Date: 20000701 Title:

Municipal Public Supply Wells Within the State of Georgia _ Documentation Report 00-24

Edition: Version 1.0, June 15, 2000 Geospatial_Data_Presentation_Form: Digital Database

Series_Information:

Series_Name: none Issue_Identification:

Publication_Information:

Publication_Place: Atlanta, GA USA Publisher: Geologic Survey Branch

Online_Linkage: gismenu.html

Description:

Abstract:

This GIS database, Municipal Public Supply Wells, contains positional data representing the groundwater wells that supplied water to city and county water systems in Georgia during 1999. At the request of the Watershed Protection Branch, (WPB), the Geologic Survey Branch Branch (GSB) administered a project for locating Municipal Public Supply Wells.

Information in the database includes the water system name, well number, water system identification number, county location, latitude and longitude coordinates (in degrees, minutes, seconds) for the well head, datum, major river basin where site is located, an 8 digit U.S. Geological Survey hydrologic unit code for the associated river basin, data collection method, and data source. The facility locations were obtained by Geologic Survey Branch (GSB) personnel utilizing Trimble Navigation GPS Pathfinder Basic Plus global positioning satellite (GPS) receivers for data collection. The uncorrected GPS locational data were corrected for various errors inherent in GPS locational data by post processing using differential correction software and were entered into a GIS database.

The manufacturer's specifications for the Trimble Navigation GPS Pathfinder Basic Plus receiver state a horizontal positional accuracy of +/- 5 meters. The database is being published at a scale of 1:24,000. The database is current through December 1999.

Purpose:

This GIS database was developed for the Environmental Protection Division for use in analysis to support EPD's environmental protection programs.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19991231

Currentness_Reference: Current through December 1999

Status:

Progress: Complete Maintenance_and_Update_Frequency: As Needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -85.51833214 East_Bounding_Coordinate: -80.74086878

North_Bounding_Coordinate: 34.9696485

South_Bounding_Coordinate: 30.61045837

Keywords:

Theme:

Theme_Keyword_Thesaurus:

GEOREF Thesaurus and Guide to Indexing, Second Edition. 1978. American Geological Institute.

Theme_Keyword: wells Theme_Keyword: water recovery

Theme_Keyword: ground water

Theme_Keyword: water supply

Place:

Place_Keyword_Thesaurus: none Place_Keyword: GA

Place_Keyword: Georgia

Place_Keyword: USA

Access_Constraints: Distribution constraints, see Point_of_contact section

Use_Constraints: These data are not to be used at scales greater than 1:24,000.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Information Geologist Contact_Organization: Geologic Survey Branch

Contact_Position: Information Geologist Contact_Address:

Address_Type: mailing and physical address Address: 19 MLK Jr. Dr. SW, Rm. 400 Agriculture Bldg.

City: Atlanta

State_or_Province: Georgia

Postal_Code: 30334

Country: USA

Contact_Voice_Telephone: 404_656_3214 Contact_Facsimile_Telephone: 404_657_8379

Contact_Electronic_Mail_Address: info.geologist@dnr.state.ga.us

Native_Data_Set_Environment:

Windows_NT, 4.0, Intel ARC/INFO version 8.0.1

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Attribute information for the two previously published databases was taken directly from those databases. Please reference the documentation reports accompanying those databases for a discussion of attribute accuracy. For unpublished data collected by GSB personnel:

Facility latitude-longitude coordinates were determined in the field by GSB personnel utilizing Trimble Navigation GPS Pathfinder Basic Plus global positioning satellite (GPS) receivers for data collection while occupying the well head, or an alternate location if well head location was inaccessible. The uncorrected GPS locational data were corrected for various errors inherent in GPS locational data by differential correction post processing and were entered into a GIS database.

The manufacturer's specifications for the Trimble Navigation GPS Pathfinder Basic Plus receiver state a horizontal positional accuracy of +/_ 5 meters after differential corrections are applied. The database is being published at a scale of 1:24,000. The information for the attributes in this database was obtained from computer printouts supplied by EPD's Watershed Protection Branch. Information contained in the Watershed Protection Branch's computer database was copied from municipal public supply well permit application files and was verified by the Watershed Protection Branch personnel who review municipal public supply well permit applications.

Logical_Consistency_Report:

Facility locations were overlaid with an existing county political boundary database to ensure spatial accuracy.

Completeness_Report:

This database covers the state of Georgia. The data is current through December 1999.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Municipal public supply well facility latitude_longitude coordinates were determined in the field by GSB personnel utilizing a Trimble Navigation GPS Pathfinder Basic Plus global positioning satellite (GPS) receiver for data collection while occupying the well head, or other location if the well head is inaccessible. The uncorrected positional data were corrected for various errors inherent in GPS positional data by processing with differential correction software and were entered into a GIS database. The manufacturer's specifications for the Trimble Navigation GPS Pathfinder Basic Plus receiver state a horizontal positional accuracy of +/_ 5 meters after differential corrections have been applied. The database is being published at a scale of 1:24,000.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Geologic Survey Branch Publication_Date: 1997

Title:

Municipal Public Supply Wells in Georgia, 1993 _ Documentation Report 97-09

Geospatial_Data_Presentation_Form: spreadsheet (dbase file) Series_Information:

Series_Name: none

Publication_Information:

Publication_Place: Atlanta. GA Publisher: Geologic Survey Branch

Source_Scale_Denominator: 24000 Type_of_Source_Media: disc

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19931231

Source_Currentness_Reference: current through December 1993

Source_Citation_Abbreviation: none Source_Contribution: data for some municipal public supply wells in Georgia.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Geologic Survey Branch Publication_Date: 2000

Title: Data from Georgia's Well Head Protection Plans Completed through December 1999 _ Documentation Report 00_13

Geospatial_Data_Presentation_Form: spreadsheet (dbase file)

Series_Information:

Series_Name: none

Publication_Information:

Publication_Place: Atlanta. GA Publisher: Geologic Survey Branch

Source_Scale_Denominator: 24000 Type_of_Source_Media: disc

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19991231

Source_Currentness_Reference: current through December 1999

Source_Citation_Abbreviation: none Source_Contribution: data for some municipal public supply wells in Georgia.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Geologic Survey Branch Publication_Date: unpublished

Title: none

Geospatial_Data_Presentation_Form: spreadsheet (dbase file)

Series_Information:

Series_Name: none

Publication_Information:

Publication_Place: Atlanta. GA Publisher: Geologic Survey Branch

Source_Scale_Denominator: 24000 Type_of_Source_Media: disc

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19991231

Source_Currentness_Reference: current through December 1999

Source_Citation_Abbreviation: none Source_Contribution: data for some municipal public supply wells in Georgia.

Process_Step:

Process_Description: Merge the three spreadsheet files into one master file by cutting and pasting the contents in Microsoft Excel and saving as a dbase file.

Process_Step:

Process_Description: Convert the dbase file to an info file:

Dbaseinfo wells-ga.dbf wells-ga.exp

Process_Step:

Process_Description: Create two separate info files based on the datum of the latitude-longitude coordinate provided.

Copyinfo wells-ga.exp wells-27.exp

Copyinfo wells-ga.exp wells-83.exp

Info

Arc

Sel wells-27.exp

Res datum cn 'NAD27'

nsel

Purge

Sel wells-83.exp

Res datum cn 'NAD27'

Purge

Process_Step:

Process_Description: Create two separate coverages from the info file by utilizing the atool command info2cover.

Info2cover wells-83.exp wells-83 longitude latitude dms27.alb

Info2cover wells-83.exp wells-83 longitude latitude dms83.alb

Contents of dms27.alb:

INPUT

PROJECTION GEOGRAPHIC

UNITS DMS

DATUM NAD27

QUADRANT NW

PARAMETERS

OUTPUT

PROJECTION ALBERS

UNITS METERS

DATUM NAD27

PARAMETERS

29 30 00

45 30 00

-83 30 00

23 00 00

0.0

0.0

END

Contents of dms83.alb:

INPUT

PROJECTION GEOGRAPHIC

UNITS DMS

DATUM NAD83

QUADRANT NW

PARAMETERS

OUTPUT

PROJECTION ALBERS

UNITS METERS

DATUM NAD27

PARAMETERS

29 30 00

45 30 00

-83 30 00

23 00 00

0.0

0.0

END

Process_Step:

Process_Description:

A single statewide coverage was created using the Arc/Info Append command to join the two point coverages producing an output coverage called wells-ga. This was accomplished using the following command:

Append wells-ga point

Process_Date: 20000615

Process_Step:

Process_Description:

First draft of metadata created by vtrent using FGDCMETA.AML ver. 1.2 05/14/98 on ARC/INFO data set c:\l2\export\wells

Process_Date: 20000615

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Point Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 1408

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Albers Conical Equal Area Albers_Conical_Equal_Area:

Standard_Parallel: 29.5 Standard_Parallel: 45.5

Longitude_of_Central_Meridian: _83.5

Latitude_of_Projection_Origin: 23

False_Easting: 0.0

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation:

Abscissa_Resolution: 48.473275 Ordinate_Resolution: 48.473275

Planar_Distance_Units: Meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866

Semi_major_Axis: 6378206.4

Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

WELLS-GA.PAT:

COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME

WELLS-GA.PAT:

COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME

1 AREA 4 12 F 3

5 PERIMETER 4 12 F 3

9 WELLS-GA# 4 5 B -

13 WELLS-GA-ID 4 5 B -

17 WSID 8 8 C -

25 WELL_NO 13 13 C -

38 W_SYS_NAME 39 39 C -

77 COUNTY 14 14 C -

91 LONGITUDE 12 12 C -

103 LATITUDE 11 11 C -

114 DATUM 9 9 C -

123 COLLECTION 19 19 C -

142 DATA_SOURC 15 15 C -

Detailed_Description:

Entity_Type:

Entity_Type_Label: WELLS-GA.PAT Entity_Type_Definition: Point attribute table

Attribute:

Attribute_Label: AREA Attribute_Definition: undefined for point

Attribute_Domain_Values: Floating_Point_Number

Attribute:

Attribute_Label: PERIMETER Attribute_Definition: undefined for point

Attribute_Domain_Values: Floating_Point_Number

Attribute:

Attribute_Label: WELLS-GA# Attribute_Definition: Internal ID

Attribute_Domain_Values: Binary_Number

Attribute:

Attribute_Label: WELLS-GA_ID Attribute_Definition: User Assigned ID

Attribute_Domain_Values: Binary_Number

Attribute:

Attribute_Label: WSID Attribute_Definition:

EPD water shed identification number for the municipal public supply well facility

Attribute_Domain_Values: Character Attribute:

Attribute_Label: WELL_NO Attribute_Definition: well identification number

Attribute_Domain_Values: Character Attribute:

Attribute_Label: W_SYS_NAME Attribute_Definition: municipal public supply well system name or permit-holder

Attribute_Domain_Values: Character Attribute:

Attribute_Label: COUNTY Attribute_Definition: county where the municipal public supply well is located

Attribute_Domain_Values: Character

Attribute:

Attribute_Label: LONGITUDE Attribute_Definition: west longitude coordinate of the municipal public supply well location

Attribute_Domain_Values: Character

Attribute:

Attribute_Label: LATITUDE Attribute_Definition: north latitude coordinate of the municipal public supply well location

Attribute_Domain_Values: Character Attribute:

Attribute_Label: DATUM Attribute_Definition: the datum in which the latitude-longitude coordinate for the municipal public supply well is stored

Attribute_Domain_Values: Character

Enumerated_Domain: Enumerated_Domain: Value: NAD27

Enumerated_Domain: Value Definition: 1927 North American Datum

Enumerated_Domain_Value: NAD83

Enumerated_Domain_Value: Definition: 1983 North American Datum

Enumerated_Domain_Value: WGS84

Enumerated_Domain_Value: Definition: 1984 World Geodetic Survey Datum Attribute:

Attribute_Label: COLLECTION Attribute_Definition: the data collection methodology for the latitude-longitude coordinate for the municipal public supply well

Attribute_Domain_Values: Character

Enumerated_Domain: Enumerated_Domain: Value: GPS

Enumerated_Domain: Value Definition: latitude-longitude coordinate collected using GPS receivers

Enumerated_Domain_Value: TOPO

Enumerated_Domain_Value: Definition: latitude-longitude coordinate collected by sighting on a 7.5 minute topographic quadrangle map

Attribute:

Attribute_Label: DATA_SOURC Attribute_Definition: the data source for the municipal public supply well attribute information

Attribute_Domain_Values: Character

Enumerated_Domain: Enumerated_Domain:

Value: WHP99 Enumerated_Domain:

Value Definition: Documentation Report 97-09 Enumerated_Domain_Value:

MPSW93 Enumerated_Domain_Value:

Definition: Documentation Report 00-13 Enumerated_Domain_Value: GSB

Enumerated_Domain_Value: Definition: unpublished data collected by GSB personnel

Entity_and_Attribute_Detail_Citation: none

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Geologic Survey Branch

Contact_Position: Senior Geologist Contact_Address:

Address_Type: mailing and physical address Address: 19 MLK Jr. Dr. SW, Rm. 400, Agriculture Bldg.

City: Atlanta

State_or_Province: Georgia

Postal_Code: 30334

Country: USA

Contact_Voice_Telephone: 404_656_3214 Contact_Instructions: Contact via email

Contact_Electronic_Mail_Address: info.geologist@dnr.state.ga.us

Distribution_Liability:

The user is encouraged to read Part A and Part B of the Documentation Report accompanying the database. The documentation report describes the database and how it was developed, and includes statements regarding accuracy and factors that may affect accuracy of the database. This database is publicly available and copies of the database are subject to being altered by parties outside of EPD and then distributed. EPD recommends that the user verify the source of the database and/or obtain confirmation that it has not been altered.

Metadata_Reference_Information:

Metadata_Date: 20000615 Metadata_Review_Date: 20000701

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Geologic Survey Branch Contact_Person: Victoria P. Trent

Contact_Position: Senior Geologist Contact_Address:

Address_Type: mailing and physical address Address: 19 MLK Jr. Dr. SW, Rm. 400, Agriculture Bldg.

City: Atlanta

State_or_Province: Georgia

Postal_Code: 30334

Country: USA

Contact_Voice_Telephone: 404_656_3214 Contact_Facsimile_Telephone: 404_657_8379

Contact_Electronic_Mail_Address: info.geologist@dnr.state.ga.us

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC_STD_001_1998

PART C - THE DIGITAL FILES CONTAINING THE GIS DATABASE:

MUNICIPAL PUBLIC SUPPLY WELLS WITHIN THE STATE OF GEORGIA,
PERMITTED THROUGH DECEMBER 1999

Summary statement/description of the contents of part c The digital files are written on the enclosed 1.44 megabyte high density diskette. The disk is in DOS format and contains the following:

1. README.TXT _ an ASCII file which is a digital copy of this summary.

2. WELLS-GA.TXT – an ASCII file which is a digital copy of this publication.

3. WELLS-GA.RTF _ a digital copy of this publication, a series of files in Rich Text File format.

4. WELLS-GA.E00 _ the GIS database of permitted municipal public supply wells in ARC/INFO export format