Wellhead Protection Areas

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:

Andrew LeBaron, Environmetnal Quality Analyst, Surface Water Assessment Section, Water Resources Division

Publication_Date: 20131010

Title: Wellhead Protection Areas

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Lansing, MI

Publisher: Michigan Department of Environmental Quality

Description:

Abstract:

Wellhead protection areas represent the land surface area that contributes ground water to wells serving public water supply systems throughout Michigan. The areas define a landscape in which management strategies are employed to protect public water supply wells from ground water contamination.

Purpose:

The data was published to provide regulators and the public an idea of the areas of the state that are critically important to the protection of public water supply wells. In accordance with the concept of sources water protection, wellhead protection areas have always been considered sensitive areas requiring an increased awareness and emphasis on the prevention of ground water contamination.

Supplemental_Information:

The data and depicted wellhead protection areas are reliable within the context of the uncertainty associated with characterization of ground water flow systems. Every attempt has been made to account for uncertainties in the data used to identify the wellhead protection areas and create the associated polygons.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19950101

Ending_Date: 20120101

Currentness_Reference: Publication date

Status:

Progress: In work

Maintenance_and_Update_Frequency: Quarterly

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -90.229749

East_Bounding_Coordinate: -82.525244

North_Bounding_Coordinate: 47.467648

South_Bounding_Coordinate: 41.715149

Keywords:

Theme:

Theme_Keyword_Thesaurus: ISO 19115 Topic Categories

Theme_Keyword: environment

Access_Constraints: None

Use_Constraints:

Please check sources, scale, accuracy, currentness and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the State of Michigan would be appreciated.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Drinking Water and Environmental Health Section, Resource Management Division

Contact_Person: Brant Fisher

Contact_Position: Environmental Engineer Specialist

Contact_Voice_Telephone: 517-241-1415

Contact_Electronic_Mail_Address: fisherb@mi.gov

Security_Information:

Security_Classification_System: FIPS Pub 199

Security_Handling_Description: Standard Technical Controls

Native_Data_Set_Environment:

Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.3.3600

Data_Quality_Information:

Logical_Consistency_Report:

The data and depicted wellhead protection areas are reliable within the context of the uncertainty associated with characterization of ground water flow systems. Every attempt has been made to account for uncertainties in the data used to identify the wellhead protection areas and create the associated polygons.

Completeness_Report:

This statewide dataset is not complete and work continues to identify provisional wellhead protection areas throughout the eastern half of the lower peninsula and all of the upper peninsula. Statewide data collection is projected to be complete by January of 2014 with periodic updates of individual wellhead protection areas as they occur.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The polygons labeled as a wellhead protection area delineation are located with an accuracy resulting from the rectifying of the polygon location against a USGS topography map as the base map. The polygons representing provisional wellhead protection areas and low vulnerability wellhead areas have been located based upon the positional accuracy of well point locations. Well point locations are largely based upon GPS data with an estimated positional accuracy of + or minus 3 meters. Some well point locations were established via review and placement of wells on aerial photos. The positional accuracy of this latter data set is + or minus 10 meters.

Lineage:

Process_Step:

Process_Description: Digitized WHPA delineation received from hydrogeo consultant

Process_Step:

Process_Description: Update the attribute information

Process_Step:

Process_Description: Merged with existing shapefile of WHPAs

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 2744

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD 1983 Hotine Oblique Mercator Azimuth Natural Origin

Oblique_Mercator:

Scale_Factor_at_Center_Line: 0.9996

Oblique_Line_Azimuth:

Azimuthal_Angle: 337.25556

Azimuth_Measure_Point_Longitude: -86.0

Latitude_of_Projection_Origin: 45.30916666666667

False_Easting: 2546731.496

False_Northing: -4354009.816

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.0001

Ordinate_Resolution: 0.0001

Planar_Distance_Units: meter

Geodetic_Model:

Horizontal_Datum_Name: D North American 1983

Ellipsoid_Name: GRS 1980

Semi-major_Axis: 6378137.0

Denominator_of_Flattening_Ratio: 298.257222101

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: michigan.WEBMERC.ENV_PY_DEQ_WELLHEAD_PROTECTION_AREAS

Attribute:

Attribute_Label: Shape.STLength()

Attribute:

Attribute_Label: Reference.CSS_SDE_ADMIN.Wellhead_Protection_Areas.AREA

Attribute:

Attribute_Label: WSSN

Attribute_Definition:

the water supply serial number, a unique numeric identifier assigned to every public water supply in the state.

Attribute_Definition_Source: DEQ

Attribute:

Attribute_Label: OBJECTID

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: DATE_

Attribute:

Attribute_Label: Shape.STArea()

Attribute:

Attribute_Label: TYPE

Attribute_Definition:

the type of wellhead protection area in large part attributed to its manner of creation.

Attribute_Definition_Source: DEQ

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Type 1 Provisional Wellhead Protection Area

Enumerated_Domain_Value_Definition:

The water supply in question provides service to a Type I, community public water supply system.

Enumerated_Domain_Value_Definition_Source: DEQ

Enumerated_Domain:

Enumerated_Domain_Value: Type 2 Provisional Wellhead Protection Area

Enumerated_Domain_Value_Definition:

The water supply in question provides service to a Type II, non-community public water supply system.

Enumerated_Domain_Value_Definition_Source: DEQ

Enumerated_Domain:

Enumerated_Domain_Value: Wellhead Protection Area delineation

Enumerated_Domain_Value_Definition:

the polygon has been identified via a study of the localized ground water system that included the collection and verification of field data and the incorporation of said data into a ground water flow model.

Enumerated_Domain_Value_Definition_Source: DEQ

Enumerated_Domain:

Enumerated_Domain_Value: Low Vulnerability Wellhead Area

Enumerated_Domain_Value_Definition:

The polygon has been identified as a one mile radius surrounding a public water supply system and the system has been sampled and is non-detect for tritium.

Enumerated_Domain_Value_Definition_Source: DEQ

Attribute:

Attribute_Label: SYSTEM

Attribute_Definition: the owner of the public water supply system.

Attribute_Definition_Source: DEQ

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Drinking Water and Environmental Health Section, Resource Management Division

Contact_Person: Brant Fisher

Contact_Position: Environmental Engineer Specialist

Contact_Voice_Telephone: 517-241-1415

Contact_Electronic_Mail_Address: fisherb@mi.gov

Distribution_Liability:

Although these data have been processed successfully on a computer system, no warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate data set limitations, restrictions or intended use. The State of Michigan shall not be held liable for improper or incorrect use of the data described and/or contained herein.

Metadata_Reference_Information:

Metadata_Date: 20130424

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

Center for Shared Solutions, Michigan Dept of Technology, Management, and Budget

Contact_Person: Bob Reszka

Contact_Position: Resource Analyst

Contact_Address:

Address_Type: mailing

Address: P.O. Box 30026

City: Lansing

State_or_Province: MI

Postal_Code: 48933

Contact_Voice_Telephone: 517-373-7910

Contact_Facsimile_Telephone: 517-373-2939

Contact_Electronic_Mail_Address: Reszkar@michigan.gov

Contact_Instructions: <http://www.Michigan.gov/cgi>

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time