The Water Inventory Program continually compiles and stores precipitation, water storage, and streamflow data.
Staff hydrologists are responsible for monitoring ground water levels in Ohio and compiling other hydrologic data. A network of 110 observation wells plus many "Special Project" wells are continually monitored and reported on each month. The "Monthly Water Inventory Report for Ohio" summarizes rainfall, trends in ground water, streamflow, and surface water storage in Ohio as well as evaluating the current overall water supply situation. This is a free publication. To learn more about the observation well network, ask for a copy of the fact sheet "Ground Water Level Monitoring in Ohio"