Ground Water Mapping & Technical Services

Hydrogeology, Geology, & Environmental Issues

The focus of the program is to collect data and create maps that show groundwater availability in Ohio. The water well database and groundwater maps are all available online. The groundwater program also has authority to help resolve conflicts between groundwater users by conducting technical investigations and preparing reports to help all groundwater users understand impacts to the resource. In areas where groundwater withdrawals exceed natural recharge, program staff can designate groundwater stress areas with special reporting requirements for all groundwater users. Staff can also hold public meetings or hearings upon request from local governments and boards to help disseminate groundwater information in conflict areas.

Water is the most important commodity for life. Approximately 42% of Ohioans rely on groundwater for their source of water. Knowing where groundwater can be obtained and how it can be managed is important for economic development. Businesses and industries will be more apt to locate and expand in Ohio if they know they will have a good water supply. Knowing how groundwater withdrawals may impact base flow in streams is also an important environmental aspect.