Generalized water-table elevation map for Bayfield County, Wisconsin: groundwater divides (2017; 1:100,000 scale)

Metadata:

• Identification_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Title:

Generalized water-table elevation map for Bayfield County, Wisconsin: groundwater divides (2017; 1:100,000 scale)

Geospatial_Data_Presentation_Form: vector digital data

Description:

Abstract:

This polyline feature represents major groundwater divides in Bayfield County, Wisconsin. Groundwater moves away from groundwater divides, as shown on the map. A groundwater divide is analogous to a ridgetop on a topographic map—just as the land surface slopes away on either side of a ridgetop, so does the water table slope away from a groundwater divide. Although not illustrated by a water-table map, groundwater also flows vertically, or downward, through the flow system.

Purpose:

These data accompany the Wisconsin Geological and Natural History Survey Open-File Report 2017-02. Plate 1 of this report, "Generalized water-table elevation map for Bayfield County, Wisconsin," was developed using information from wells in Bayfield County, previously published maps of surficial and bedrock geology, and an existing groundwater flow model. Well information was also used to evaluate characteristics that can influence the well’s susceptibility to contamination originating at or near the land surface. The compilation and interpretation of data was intended to support discussions and decisions surrounding land use in Bayfield County.
Four datasets accompany the report: water-table contours, groundwater divides, groundwater flow lines, and well points. This dataset consists of the groundwater divides.

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -91.566815

East_Bounding_Coordinate: -90.793312

North_Bounding_Coordinate: 46.921597

South_Bounding_Coordinate: 46.205895

Keywords:

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Bayfield County

Theme_Keyword: Wisconsin

Theme_Keyword: groundwater

Theme_Keyword: hydrogeology

Theme_Keyword: water-table elevation

Access_Constraints: None

Use_Constraints:

This dataset was developed from sources of varying map scales and may not be accurate for site-specific applications without verification. These data represent work performed by the Wisconsin Geological and Natural History Survey. Please contact gis@wgnhs.uwex.edu with any questions or comments.THESE DATA ARE PROVIDED BY THE WISCONSIN GEOLOGICAL AND NATURAL HISTORY SURVEY (WGNHS) ON AN "AS IS" BASIS. WGNHS WILL NOT BE LIABLE FOR ANY DAMAGES OF ANY KIND ARISING FROM THE USE OF THESE DATA, INCLUDING, BUT NOT LIMITED TO DIRECT, INDIRECT, PUNITIVE, AND CONSEQUENTIAL. WGNHS MAKES NO WARRANTIES ON THESE DATA, EXPRESS, IMPLIED, STATUTORY, OR IN ANY OTHER PROVISION OF ANY AGREEMENT OR COMMUNICATION, AND SPECIFICALLY DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

Data_Set_Credit:

This project was completed by the Wisconsin Geological and Natural History Survey (WGNHS), UW-Extension, with support from the Bayfield County Health Department.
The well database compilation, used in the report and to help develop the water table map, was completed by Stephen Mauel, GISP, a GIS Specialist at the Wisconsin Geological and Natural History Survey (WGNHS): Mauel, S.W., Pederson, E., Schoephoester, P.R., 2010, Geodatabase of water wells in Bayfield County, Wisconsin: Wisconsin Geological and Natural History Survey geodatabase.
Well data are from Well Construction Reports (WCRs) submitted to the Wisconsin Department of Natural Resources mainly between 1988 and 2010.
Water table contours were developed using a groundwater model from the following report: Fehling, A.C., Bradbury, K.R., Schoephoester, P.R., Mauel, S., Leaf, A.T., Hunt, R.J., Juckem, P.F., and Pruitt, A., In Review, Characterization of groundwater resources in the Washburn/Great Divide Unit of the Chequamegon-Nicolet National Forest, Wisconsin: Wisconsin Geological and Natural History Survey Technical Report X.
Water table contours for two agricultural regions of Bayfield County were completed for a previous project: Gotkowitz, M.B., and Li, Y., 2016, Groundwater and wells in agricultural regions of Bayfield County, Wisconsin – Report to the Large-Scale Livestock Study Committee: Wisconsin Geological and Natural History Survey Technical Report 2, 13 p.
Elevation data from 2015 LIDAR provided by Bayfield County, available from: <http://www.bayfieldcounty.org/892/GIS-and-Parcel-Data>.

Native_Data_Set_Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.3.1.4959

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: String

Point_and_Vector_Object_Count: 2

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: NAD 1983 HARN Wisconsin TM

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.9996

Longitude_of_Central_Meridian: -90.0

Latitude_of_Projection_Origin: 0.0

False_Easting: 520000.0

False_Northing: -4480000.0

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 HARN

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: ba_gw_divide_2017

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: SHAPE_Length

Attribute_Definition: Length of feature in internal units.

Attribute_Definition_Source: Esri

Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated.

Metadata_Reference_Information:

Metadata_Date: 20170602

Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time