1. Building a Water Well Database for GIS Analysis By A. Wayne Jones, Kelly A. Barrett Ohio Department of Natural Resources Division of Water

2. Objectives Transfer of well log data from paper to database Transfer of well log data from paper to database Edit well log database Edit well log database Convert flatline files to GIS dataset Convert flatline files to GIS dataset TIN Modeling TIN Modeling Create and support Division of Water products Create and support Division of Water products

3. Software Used Microsoft Access and Excel (2002) Microsoft Access and Excel (2002) Oracle 10G Release 1 Oracle 10G Release 1 Flotiva from Workiviti (8-1-6) Flotiva from Workiviti (8-1-6) Arc Map, Arc Catalog, Arc Toolbox (9.1) (Spatial Analyst, 3-D Analyst) Arc Map, Arc Catalog, Arc Toolbox (9.1) (Spatial Analyst, 3-D Analyst) Arc Workstation (9.1) Arc Workstation (9.1)

5. Well log locations from field locating Well log locations from field locating Over 800,000 well log records Over 800,000 well log records –Less than 200,000 have coordinates Geocoded 3 counties with excellent results Geocoded 3 counties with excellent results Building a Water Well Database for GIS Analysis

6. Digitized point files on CD for each county Digitized point files on CD for each county Verify with well log database Verify with well log database –location map year –township code –location number –location area

11. Building a Water Well Database for GIS Analysis Microsoft Access 2000 is the front end to Oracle database Microsoft Access 2000 is the front end to Oracle database

12. Digital Line Graphs USGS Digital Line Graph –Downloaded from Ohio Center for Mapping –1:24,000 scale –Hypsography layer During AML dlg file recodes major and minor codes (Elevation items are defined) During AML dlg file recodes major and minor codes (Elevation items are defined)

13. Building a Water Well Database for GIS Analysis AML Menu for Recoding DLG items

14. Building a Water Well Database for GIS Analysis

15. Converting DLG to TIN

16. Building a Water Well Database for GIS Analysis TINSPOT defines surface elevation at each well location TINSPOT defines surface elevation at each well location –Arc TINSPOT Command in Arc Workstation –TINSPOT uses the interpolated elevation from the TIN model to define the elevation at the location of the point coverage Water table elevation is calculated by subtracting static water level from surface elevation Water table elevation is calculated by subtracting static water level from surface elevation

17. Applications for Digital Data Potentiometric surface mapping Potentiometric surface mapping Shapefiles of XY well log data with query capacity Shapefiles of XY well log data with query capacity Grid modelling Grid modelling

19. Building a Water Well Database for GIS Analysis

20. Microsoft Access table as a.DBF4 export to create shapefile Microsoft Access table as a.DBF4 export to create shapefile Multiple Query Options on shapefile Multiple Query Options on shapefile –All sand and gravel wells (left) –All bedrock wells –All wells in particular quadrangle Franklin County

21. Create a spatial query around a feature Create a spatial query around a feature Select by attribute or select by location Select by attribute or select by location All the sand and gravel wells within 1 mile of the Darby Creek (left) All the sand and gravel wells within 1 mile of the Darby Creek (left) All bedrock wells within 10 miles of US 71 All bedrock wells within 10 miles of US 71 Building a Water Well Database for GIS Analysis

22. Create a buffer “1 mile radius” from the intersections of 2 streets or any point location (right) Popular query from environmental consulting firms

23. Building a Water Well Database for GIS Analysis Potentiometric Surface contours Potentiometric Surface contours –Converted to a TIN Model TIN converted to raster TIN converted to raster Raster calculator to subtract grids Raster calculator to subtract grids Darby Creek watershed poster Darby Creek watershed poster

24. Thanks!! Ken Pendley, Rick Archer, Jim Raab, Mike Angle, ODNR, Division of Water Ken Pendley, Rick Archer, Jim Raab, Mike Angle, ODNR, Division of Water Shashi Srivastava, Oracle Database Administrator, ODNR, Office of Information Technology Shashi Srivastava, Oracle Database Administrator, ODNR, Office of Information Technology Mark Anstaett, GIMS programmer, Office of Information Technology Mark Anstaett, GIMS programmer, Office of Information Technology Financial Support provided by the Ohio Department of Transportation Financial Support provided by the Ohio Department of Transportation