GIS Projects Summary Page

Dam Inventory Coverages

   The Division of Water has created an Arc/Info coverage of the inventory of regulated dams in Ohio. This coverage contains an enormous amount of data and is currently being manipulated to provide an organized presentation of the information. For more information please contact (614-265-6731).

ERIN An On-line Interactive Soils Mapping and Site Assessment Tool

   Earth Resources Information Network (ERIN) is an evolving network of tools that facilitate inclusion of Ohio’s soil, water and natural resource data into private and public land use decisions. ERIN provides this data in a single location, with a simple format and in conjunction with powerful analysis tools.

   The Division of Water is currently using a GIS interface to incorporate the various data sources associated with floodplain management. This GIS application provides an organized, comprehensive method of obtaining floodplain information in an Arcview environment. Future goals associated with this project focus on using the available information to enhance the level of floodplain management provided by the Division of Water.

Sources of Flood Map Data
  The FEMA Map Store is now open for all customers. Please click on the below link to enter the store. Persons requiring assistance can still call MSC Customer Service aat 1-800-358-9616.

   For a fact sheet on ordering Floodplain Maps & Flood Insurance Studies please click below:
Fact Sheet No. 92-21 as (PDF File 41k).

   The Division of Water has created pollution potential maps for 73 of the 88 Ohio counties. The shape files were created on a county basis.

NOTE:  Shape files available for download may be found by searching the ODNR GIS central archives. Links to download the shape files are provided within the metadata reports that are returned as the result of archive queries.
Click here to go to the archives now

Ground Water Potentiometric Surface Maps 

    Ohio's potentiometric surface mapping program began in the late 1990's under the direction of the Ohio Department of Natural Resources, Division of Water. This program was initiated by the Ohio EPA for use in their Source Water Assessment Program.  The Division has created potentiometric surface maps for 37 counties in Ohio, most located in the Lake Erie basin.  To view a map showing the availability go to www.dnr.state.oh.us/water/gwpsurface/Psurface_Status/tabid/3626/Default.aspx

    Potentiometric surface (or water table) maps indicate the elevation and horizontal direction of ground water flow. Potentiometric surface maps are being created for bedrock (consolidated formations) and sand & gravel (unconsolidated formations) aquifers.

NOTE: Shape files available for download may be found by searching the ODNR GIS central archives. Links to download shape files are provided within the metadata reports that are returned as the result of archive queries.
Click here to go to the archives now.

Ground Water Resource Coverages

   The Division has completed the mapping of the ground water resources for every county in Ohio. Although all of the ground water resource maps have been created, only a portion of them have been converted to a digital Arc/Info format. These coverages were created on a county basis and are in various stages of completion.  PDF versions of all 88 counties can be viewed/downloaded from the Ground Water Mapping and technical Services web page.

NOTE: Coverages available for download may be found by searching the ODNR GIS central archives. Links to download coverages are provided within the metadata reports that are returned as the result of archive queries.
Click here to go to the archives now.

Water Well Data 

There are several on-line location-dependent searches that can be completed depending on the required shape of your study area. These searches include radius, area, polygon and a map based tool hosted in ERIN. To conduct a search of the water well record database, go to http://www.dnr.state.oh.us/water/maptechs/wellogs/appNEW/ .  

The results of search list can be downloaded into a spreadsheet to create a shape file of located water well records. It should be noted that less than 50% of the water well records in the ODNR database have locational data (latitude/longitude or state plane).   We are continually trying to geocode as many records as we can but a majority of the older records have an incomplete address. If you desire all the records for a county or township, a Custom Data Search can be conducted that will return all the records that meet your search criteria. 

For questions regarding this project please contact Jim Raab at:
Phone: (614) 265-6747
E-mail: jim.raab@dnr.state.oh.us

Address:

Ohio Department of Natural Resources
Division of Soil and Water Resources
2045 Morse Road, Bldg. B-2
Columbus, Ohio 43229-6693