Michigan Dept. of Environment, Great Lakes, and EnergyThis Regional Water Table Surface Contours Upper Glacial Drift Lower Peninsula is a generalized water table surface created by using the existing Wellogic water well database as of March 2021 and using just wells screened in the upper portion of the glacial drift. The elevation of the reported static water level (SWL field) reported on the well logs was calculated by subtracting it from the elevation at each well which was based on a 10-meter DEM. The data also incorporated the elevations of the Great Lakes Shorelines and the elevation of hydraulically appropriate surface water bodies (NHD Plus) that appear to be connected to the regional aquifer system and not perched above the regional water table surface. Contours were derived at a 10 feet contour interval. The original data was mapped for the entire lower peninsula. This Kent County data was clipped out of the peninsula data. The fields found in this dataset are: Field Name Description Id Unique integer in long integer format Contour Groundwater elevation value (feet above mean sea level) in double precision format Contour1 Groundwater elevation value (feet above mean sea level) in long integer format INDEX Values in long integer format that allow different index contours to be flagged, labeled, queried, and/or symbolized. INDEX10 Values in long integer format that allow different index contours to be flagged, labeled, queried, and/or symbolized. INDEX5 Values in long integer format that allow different index contours to be flagged, labeled, queried, and/or symbolized. Shape_Length Length of line in feet in double precision format This data is used in the North Kent Study Area Data Summary Web App ( Item Details ). You can find more information about the North Kent Study Area by visiting the House Street Disposal Area webpage or the Rockford Tannery webpage on the Michigan PFAS Action Response Team (MPART) website . For questions about this content, reach out to Leah Gies, GiesL1@Michigan.gov . :)ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/6231b45af4ef4bc59db375a38fb992c1_1engState of Michigan Open Data PortalPublicKent County Regional Water Table Surface Contours Upper Glacial Drift [Michigan]Web servicesMichiganLast Modified: 2025-09-04