DRASTIC COVERAGE OF INTERMEDIATE AQUIFER SYSTEM

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Florida Department of Environmental Protection (FDEP)

Publication_Date: 19980707

Title: DRASTIC COVERAGE OF INTERMEDIATE AQUIFER SYSTEM

Geospatial_Data_Presentation_Form: Shapefile

Other_Citation_Details:

The following Florida counties: Hamilton, Suwannee, Colombia, Union, Bradford, Polk, Manatee, Hillsborough, Hardee, Sarasota, DeSoto, and Charlotte.

Online_Linkage: <http://www.dep.state.fl.us/gis/>

Description:

Abstract:

This dataset contains DRASTIC coverage for the Intermediate Aquifer System. DRASTIC is a system developed jointly by the U.S. Environmental Protection Agency (USEPA) and the National Water Well Association (NWWA) to map potential aquifer vulnerability. The methodology utilizes existing hydrogeological information to produce color-coded maps which display areas that are more or less likely to be affected by pollution introduced on the ground's surface. These maps depict areas that are sensitive to land use changes which may affect ground water quality. Drastic maps are composites made up of eight individually mapped hydrogeological parameters. Seven of these parameters (depth to water - Dw, net recharge - Nr, aquifer media - Am, soil media - Sm, topography - T, impact of the vadose zone - Iv and hydraulic conductivity - Hc) are used to derive the DRASTIC summary index score. The eighth, hydrogeologic setting, is useful for general map interpretation but, it is not included in the summary index.

Purpose: To map potential aquifer vulnerability.

Supplemental_Information: Polygon

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19980707

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -87.429040

East_Bounding_Coordinate: -79.872251

North_Bounding_Coordinate: 30.983191

South_Bounding_Coordinate: 24.492815

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: DRASTIC

Theme_Keyword: Aquifer

Theme_Keyword: U.S Environmental Protection Agency

Theme_Keyword: USEPA

Theme_Keyword: Nation Water Well Association

Theme_Keyword: NWWA

Theme_Keyword: Hydrogeological

Theme_Keyword: Pollution

Theme_Keyword: Land use

Theme_Keyword: Ground water

Theme_Keyword: Florida Department of Environmental Protection

Theme_Keyword: FDEP

Access_Constraints: None

Use_Constraints: None

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Florida Geographic Data Library (FGDL)

Contact_Address:

Address_Type: mailing and physical address

Address: 431 Architecture PO Box 115706

City: Gainesville

State_or_Province: Fl

Postal_Code: 32611

Country: USA

Contact_Electronic_Mail_Address: Web site: <http://www.fgdl.org>

Contact_Electronic_Mail_Address: Technical Support: <http://www.fgdl.org/fgdlfeed.html>

Contact_Electronic_Mail_Address:

FGDL Frequently Asked Questions: <http://www.fgdl.org/fgdlfaq.html>

Contact_Electronic_Mail_Address: FGDL Mailing Lists: <http://www.fgdl.org/fgdl-l.html>

Contact_Electronic_Mail_Address: For FGDL Software: <http://www.fgdl.org/software.html>

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.2.0.700

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Relied on the integrity of the attribute information within the original data layer.

Quantitative_Attribute_Accuracy_Assessment:

Attribute_Accuracy_Explanation:

Drastic maps are most useful as a generalized tool to assess regional potential aquifer vulnerability. Except for soils and topography layers, the source maps used were regional, water management district or statewide in scale and scope of coverage. This precludes the use of DRASTIC maps as a site-specific tool for assessing potential aquifer vulnerability. The dataset provides location and attribute information for use in national and regional cartographic and network analysis applications.

Quantitative_Attribute_Accuracy_Assessment:

Attribute_Accuracy_Explanation:

Scale is an important factor in data usage. Certain scale datasets are not suitable for some project, analysis, or modelling purposes. Please be sure you are using the best available data.

1:24000 scale datasets are recommended for projects that are at the county level. 1:24000 data should NOT be used for high accuracy base mapping such as property parcel boundaries.

1:100000 scale datasets are recommended for projects that are at the multi-county or regional level. 1:125000 scale datasets are recommended for projects that are at the regional or state level or larger.

Vector datasets with no defined scale or accuracy should be considered suspect. Make sure you are familiar with your data before using it for projects or analysis. Every effort has been made to supply the user with data documentation. For additional information, see the References section and the Data Source Contact section of this documentation. For more information regarding scale and accuracy, see our webpage at: <http://geoplan.ufl.edu/education.html>. These data are based on interpretation of available information and should not be construed as legally binding.

Logical_Consistency_Report:

Relied on the integrity of the attribute information within the original data layer.

Completeness_Report:

Relied on the integrity of the attribute information within the original data layer.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Florida Department of Environmental Protection (FDEP)

Publication_Date: 19980707

Title: DRASTIC COVERAGE OF INTERMEDIATE AQUIFER SYSTEM

Source_Scale_Denominator: 1:100,000

Type_of_Source_Media: map

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19980707

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: FDEP

Source_Contribution: Spatial and attribute information

Process_Step:

Process_Description:

Geoplan downloaded this dataset from the Florida DEP website: <http://www.dep.state.fl.us/gis/datadir.asp> The dataset's prior history from FDEP is as follows: A separate polygon coverage was built for each parameter (depth to water - Dw, net recharge - Nr, aquifer media - Am, soil media - Sm, topography - T, impact of the vadose zone - Iv, hydraulic conductivity - Hc, hydrogeologic setting). Then, the eight coverages were composited into a single coverage with all of the information from the originals for the FASTCAD drawings. These drawings were then converted to ARC/INFO coverages which were edited by county. The county coverages were then edgematched and mapjoined into a statewide coverage. The statewide coverages, for each aquifer, were then dissolved for the individual DRASTIC parameters for further error checking of the composite coverages. Once all errors were corrected, the composite attributes were recalculated for the final statewide DRASTIC coverages.

Process_Date: 2002

Process_Step:

Process_Description:

EXPLANATION OF PROCEDURES USED TO TRANSFORM THE DATA The original county CAD DRASTIC drawings were converted to ARC/INFO files, built as point, line and polygon coverages and edited for digitizing errors. The Dbase files containing the attribute data were then joined to polygon attribute tables in ARC/INFO. County coverages were then edgematched and mapjoined to create a statewide coverage. The statewide coverage was then projected to Albers HPGN and dissolved on the individual DRASTIC parameters and edited for county boundary discrepancies. The dissolved layers were intersected back together, the weighted fields were calculated and summed to produce the final DRASTIC Index values which were then used to color, according to prescribed ranges, the final coverage.

Process_Step:

Process_Description:

GeoPlan, during the QA/QC process included the following aspects: 1.) Added DESCRIPT item based on SETTING

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: 1173

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Albers Conical Equal Area

Albers_Conical_Equal_Area:

Standard_Parallel: 24 0 0.000

Standard_Parallel: 31 30 0.000

Longitude_of_Central_Meridian: -84 0 0.000

Latitude_of_Projection_Origin: 24 0 0.000

False_Easting: 400000.00000

False_Northing: 0.000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.002048

Ordinate_Resolution: 0.002048

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: D_North_American_1983_HARN

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: aqdrin

Entity_Type_Definition: .DBF

Entity_Type_Definition_Source: FGDL

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:

Data attribute inherent to the ESRI shapefile format, which defines the data as a point, polyline, or polygon.

Attribute_Definition_Source: FGDL

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: AREA

Attribute_Definition: Area of the polygon feature (meters)

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: PERIMETER

Attribute_Definition: Perimeter of polygon feature (meters)

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: SETTING

Attribute_Definition:

Hydrogeologic setting, reflects general geomorphology and varies nationally by region. Florida lies within region 11, the Southeast Coastal Plain, of the Ground water region of the United States as described by Heath in USGS Water Supply Paper 2242.

Attribute_Definition_Source: FDEP

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 11A

Enumerated_Domain_Value_Definition: Karst limestone areas ( limestone near the surface)

Enumerated_Domain_Value_Definition_Source: FDEP

Enumerated_Domain:

Enumerated_Domain_Value: 11B

Enumerated_Domain_Value_Definition: Coastal Deposits (thick clastic marine sediments)

Enumerated_Domain_Value_Definition_Source: FDEP

Enumerated_Domain:

Enumerated_Domain_Value: 11C

Enumerated_Domain_Value_Definition: Swamps and Wetlands

Enumerated_Domain_Value_Definition_Source: FDEP

Enumerated_Domain:

Enumerated_Domain_Value: 11D

Enumerated_Domain_Value_Definition: Beaches and Bars (sandy coastal areas and relict beach ridges)

Enumerated_Domain_Value_Definition_Source: FDEP

Attribute:

Attribute_Label: DW

Attribute_Definition: depth to water 5

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: NR

Attribute_Definition: net recharge 4

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: AM

Attribute_Definition: aquifer media 3

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: SM

Attribute_Definition: soil media 2

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: T

Attribute_Definition: topography 1

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: IV

Attribute_Definition: impact of vadose zone 5

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: HC

Attribute_Definition: hydraulic conductivity 3

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: DWV

Attribute_Definition: Dw depth to water multiplied by 5

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: NRV

Attribute_Definition: Nr net recharge multiplied by 4

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: AMV

Attribute_Definition: Am aquifer media multiplied by 3

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: SMV

Attribute_Definition: Sm soil media multiplied by 2

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: TV

Attribute_Definition: T topography multiplied by 1

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: IVV

Attribute_Definition: Iv impact of vadose zone multiplied by 5

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: HCV

Attribute_Definition: Hc hydraulic conductivity multiplied by 3

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: INDEX_X

Attribute_Definition: (Drv+ Nrv + Amv + Smv + Tv + Ivv + Hcv)

Attribute_Definition_Source: FDEP

Attribute:

Attribute_Label: DESCRIPT

Attribute_Definition: FGDL added item based on SETTING.

Attribute_Definition_Source: FGDL

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Florida Geographic Data Library (FGDL)

Contact_Address:

Address_Type: mailing and physical address

Address: 431 Architecture PO Box 115706

City: Gainesville

State_or_Province: Fl

Postal_Code: 32611

Country: USA

Contact_Electronic_Mail_Address: Web site: <http://www.fgdl.org>

Contact_Electronic_Mail_Address: Technical Support: <http://www.fgdl.org/fgdlfeed.html>

Contact_Electronic_Mail_Address:

FGDL Frequently Asked Questions: <http://www.fgdl.org/fgdlfaq.html>

Contact_Electronic_Mail_Address: FGDL Mailing Lists: <http://www.fgdl.org/fgdl-l.html>

Contact_Electronic_Mail_Address: For FGDL Software: <http://www.fgdl.org/software.html>

Resource_Description: Downloadable Data or CD ROM

Distribution_Liability:

THE FGDL DATA AS PROVIDED BY CONTRIBUTING ORGANIZATIONS AND ANY PROGRAMMING SOFTWARE CREATED BY THE UNIVERSITY OF FLORIDA GEOPLAN CENTER (COLLECTIVELY THE "MATERIALS") ARE COPYRIGHTED BY THE UNIVERSITY OF FLORIDA GEOPLAN CENTER FOR THE FGDL CONTRIBUTING AGENCIES AND ORGANIZATIONS (THE "DATA PROVIDERS"). DO NOT REPRODUCE, REDISTRIBUTE OR RESELL THE MATERIALS, OR PROVIDE THE MATERIALS FOR FREE TO CUSTOMERS OR CLIENTS, OR PLACE THE MATERIALS FOR DOWNLOAD ON A WEBSITE. ADDITIONALLY, WHEN USING FGDL DATA OR SOFTWARE IN PROJECTS, MAPS, ETC.; YOU AGREE TO ACKNOWLEDGE THE FGDL AS A DATA SOURCE. THE MATERIALS ARE PROVIDED "AS IS". THE UNIVERSITY OF FLORIDA GEOPLAN CENTER MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE QUALITY OR SUITABILITY OF THE MATERIALS, EITHER EXPRESSLY OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. THE UNIVERSITY OF FLORIDA GEOPLAN CENTER MAKES NO WARRANTIES, GUARANTIES OR REPRESENTATIONS AS TO THE TRUTH, ACCURACY OR COMPLETENESS OF THE DATA PROVIDED BY THE FGDL CONTRIBUTING ORGANIZATIONS. THE UNIVERSITY OF FLORIDA GEOPLAN CENTER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED AS A RESULT OF USING, MODIFYING, CONTRIBUTING OR DISTRIBUTING THE MATERIALS.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 3.400

Metadata_Reference_Information:

Metadata_Date: 20020930

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Florida Department of Environmental Protection (FDEP)

Contact_Address:

Address_Type: mailing address

Address: 3900 Commonwealth Blvd.

City: Tallahassee

State_or_Province: FL

Postal_Code: 32399

Contact_Voice_Telephone: 850/921-9745

Contact_Electronic_Mail_Address: <http://www.dep.state.fl.us/gis/>

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile