Ohio Level 4 Ecoregions Map
| er55a - Clayey High Lime Till Plains |
| er55b - Loamy High Lime Till Plains |
| er55c - Mad River Interlobate Area |
| er55d - Pre-Wisconsinan Drift Plains |
| er55e - Darby Plains |
| er55f - Whitewater Interlobate Area |
| er56a - Lake Country |
| er57a - Maumee Lake Plains |
| er57b - Oak Openings |
| er57c - Paulding Plains |
| er57d - Marblehead Drift/Limestone Plain |
| er61b - Mosquito Creek/Pymatuning Lowlands |
| er61c - Low Lime Drift Plain |
| er61d - Erie Gorges |
| er61e - Summit Interlobate Area |
| er70a - Permian Hills |
| er70b - Monongahela Transition Zone |
| er70c - Pittsburgh Low Plateau |
| er70d - Knobs-Lower Scioto Dissected Plateau |
| er70e - Unglaciated Upper Muskingum Basin | er70e - Ohio/Kentucky Carboniferous Plateau |
| er70h - Carter Hills | er70h - Outer Bluegrass |
| er83a - Erie Lake Plain |
Based on Ecoregions developed by the EPA this map describe areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources, as well as similarity of climate that can assist Ohio gardenders.
