Bob Reszka
Center for Shared Solutions, Michigan Dept of Technology, Management, and Budget
Resource Analyst
517-373-7910
517-373-2939
P.O. Box 30026
Lansing
MI
48933
Reszkar@michigan.gov
http://www.Michigan.gov/cgi
20130424
ArcGIS Metadata
1.0
Brant Fisher
Drinking Water and Environmental Health Section, Resource Management Division
Environmental Engineer Specialist
517-241-1415
fisherb@mi.gov
Feature Class
Wellhead Protection Areas
Andrew LeBaron, Environmetnal Quality Analyst, Surface Water Assessment Section, Water Resources Division
Michigan Department of Environmental Quality
Lansing, MI
vector digital data
2013-10-10T00:00:00
2013-10-10T00:00:00
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>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.</SPAN></P></DIV></DIV></DIV>
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.
Brant Fisher
Drinking Water and Environmental Health Section, Resource Management Division
Environmental Engineer Specialist
517-241-1415
fisherb@mi.gov
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.
FIPS Pub 199
Standard Technical Controls
<DIV STYLE="text-align:Left;"><DIV><P><SPAN>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.</SPAN></P></DIV></DIV>
ESRI ArcGIS 10.0.3.3600
Publication date
1995-01-01
2012-01-01
-90.229749
-82.525244
41.715149
47.467648
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.
1
-90.229749
-82.525244
47.467648
41.715149
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.
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.
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.
Digitized WHPA delineation received from hydrogeo consultant
Update the attribute information
Merged with existing shapefile of WHPAs
0
dataset
ESRI
10.0.0
Simple
FALSE
0
TRUE
FALSE
michigan.WEBMERC.ENV_PY_DEQ_WELLHEAD_PROTECTION_AREAS
Feature Class
0
Shape.STLength()
Shape.STLength()
Double
0
0
0
EgleSde.EGLESDEADMIN.WellheadProtectionAreas.AREA
EgleSde.EGLESDEADMIN.WellheadProtectionAreas.AREA
Double
8
16
2
WSSN
the water supply serial number, a unique numeric identifier assigned to every public water supply in the state.
DEQ
WSSN
String
16
0
0
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
OBJECTID
OID
4
10
0
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Shape
Geometry
8
0
0
Shape.STArea()
Shape.STArea()
Double
0
0
0
CreatedUser
CreatedUser
String
50
0
0
CreatedDate
CreatedDate
Date
8
0
0
LastEditedUser
LastEditedUser
String
50
0
0
LastEditedDate
LastEditedDate
Date
8
0
0
TYPE
the type of wellhead protection area in large part attributed to its manner of creation.
DEQ
Type 1 Provisional Wellhead Protection Area
The water supply in question provides service to a Type I, community public water supply system.
DEQ
Type 2 Provisional Wellhead Protection Area
The water supply in question provides service to a Type II, non-community public water supply system.
DEQ
Wellhead Protection Area delineation
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.
DEQ
Low Vulnerability Wellhead Area
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.
DEQ
TYPE
String
60
0
0
APPROVAL_DATE
APPROVAL_DATE
String
12
0
0
SYSTEM
the owner of the public water supply system.
DEQ
SYSTEM
String
60
0
0
WellheadProtectionAreas
002
-10044328.892500
-9186667.648200
5118403.941400
6018741.515400
1
Projected
GCS_WGS_1984_Major_Auxiliary_Sphere
Linear Unit: Meter (1.000000)
WGS_1984_Web_Mercator
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20220815
11272900
20220815
11272900
20220630
11451400
1.0
FALSE