Groundwater Inventory and Mapping Project, a cooperative effort between the Water Bureau - Michigan Department of Environmental Quality, USGS - Michigan Water Science Center and Michigan State University - Institute of Water Research, RS&GIS and Biosystems and Agricultural Engineering. This project was mandated by P.A. 148 (Michigan Acts of 2003). Major funding was provided by MDEQ, supplemented with additional funds from the USGS Cooperative Water Program. vector digital data Lansing, Michigan MDEQ http://gwmap.rsgis.msu.edu/ The data in this file was obtained from Wellogic, the Michigan Department of Environmental Quality Statewide Ground Water Database (SGWD). Wellogic contains approximately 425,000 water well records found within the State of Michigan, and although it represents the best available data, it cannot be considered a complete database of all the wells or well records in existence. The well files were downloaded by county and merged together to create a statewide file. In the merge process any well that fell outside of its designated county boundary was removed from the original data set. Approximately 325,000 records were used in this file after the inconsistent point locations were removed. A series of additional attributes were added to the database, this is a brief overview of how the well locations were processed: A GIS data update utility created at MSU was used to process and merge the county wells; this also added many glacial drift and rock well fields, and percentages for aquifer drift material based on the existing Wellogic and lithology database information. Next the percentages of aquifer material and trend information were calculated for the drift index. These fields were used by the USGS to further calculate the wells transmissivity and yield values. A detailed account of these processes can be found later on in this document. The Wellogic data base is the richest source of well data available in the State of Michigan. From this well data much information can be derived about the groundwater characteristics. This shape files was downloaded from the Wellogic database on 5/24/2005 and serves as the master well file for the Groundwater Inventory and Mapping project. See attached data dictionary for full field descriptions. Complete Unknown -90.460467 -82.175863 47.486476 41.636310 None Wellogic wells None Michigan None No restrictions on access No restrictions on use Remote Sensing and GIS Research and Outreach Services, Michigan State University Justin M Booth Info Tech Professional Michigan State University: Remote Sensing & GIS Research and Outreach Services - Department of Geography; Institute of Water Research; Biosystems and Agricultural Engineering Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.1.5686 MDNR, RMAP 19980101 2.0 vector digital data Lansing, MI MDNR-MIRIS None Section Grids Michigan Center for Geograpahic Information unknown v4b vector digital data Framework Lansing, Mi State of Michigan www.mi.gov/cgi None Framework Michigan Department of Environmental Quality vector digital data Well location points Lansing, Michigan MDEQ None Wellogic RSGIS - Michigan State University vector digital data East Lansing, MI RSGIS None NED DEM polygons Many calculations were made to facilitate mapping and to allow for spatial interpolation between water well log glacial aquifer properties. The creation and analysis of this data involved complex processes that are described in the technical report that is available at http://gwmap.rsgis.msu.edu/. Please refer to attached data dictionary for full field descriptions. Remote Sensing & GIS Research and Outreach Services Justin M Booth Well data by county was downloaded from the Michigan Geographic Data Library on May 24, 2005 using a download tool created by Bill Enslin at Michigan State University. All county files were renamed and processed to remove wells that fell outside of the county boundaries. This application uses MapObjects Lite code to process the spatial analyzes and the field calculations. Framework V4b county boundaries were used to clip out bad point locations and the MDNR public land survey section shape file was used to flag points that were outside of there survey sections. Other attributes were added such as elevation information, rock and drift well types, and drift aquifer percentages. Next all counties and associated lithology information were merged into a single statewide shape file. Remote Sensing & GIS Research and Outreach Services Bill Enslin Senior Research Specialist Vector Entity point 271278 NAD 1983 Michigan GeoRef Meters 0.9996 337.255555555556 -86.0 45.30916666666666 2546731.496 -4354009.816 coordinate pair 0.0001 0.0001 meter D North American 1983 GRS 1980 6378137.0 298.257222101 Reference.CSS_SDE_ADMIN.Wells_Hydraulic_Property_Database OBJECTID Internal feature number. Esri Sequential unique whole numbers that are automatically generated. PCT_AQ SCREEN_FRM DI1 A_SC_LPCT2 A_SC_LMAQ1 AQ_CODE TEST_RATE DRILLER_ID DI6 PCT_AQ_R DI2 ROCK_TOP DI5 AQ_FLAG A_THICKNES CONST_DATE TEST_METHD A_SC_LITH1 A_HIT_SWL OWNER_NAME WELL_TYPE SWL ELEV_DEM DI11 DI10 COUNTY TEST_HOURS DI7 SPC_CPCITY D_R_TYPE SCREEN_TO DEPTH_FLAG PMP_CPCITY A_SC_LITH2 DI3 A_HIT_TOP DID TEST_DEPTH A_THICKNS2 DIAQ2 SW_ELEV Trend14_Up Trend14 Trend_All Trend9_Dn DIAQ DI13 Trend14_Dn Trend9_Up Trend9 A_SC_LPCT1 WELL_DEPTH DI9 WELLID A_SC_LMAQ2 A_SC_LMOD2 DI8 SWL_FLAG Shape Feature geometry. ESRI Coordinates defining the features. PCT_AQ_D A_SC_LMOD1 WITHIN_SEC DI4 LDSYSTEM Landsys DI12 Remote Sensing & GIS Research and Outreach Services Justin M Booth Information Technology Professional mailing

1405 South Harrison, Room 308

East Lansing MI 48823 United States of America boothj@msu.edu The State of Michigan or the Ground Water Inventory and Mapping Project partnership assumes no liability for results or conclusions drawn from use of this data. 20170915 Remote Sensing & GIS Research and Outreach Services Justin M Booth Information Technology Professional mailing

1405 South Harrison, Room 308

East Lansing MI 48823 United States of America 517-432-0446 517-353-1821 boothj@msu.edu FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time