| er45a - Southern Inner Piedmont |
| er45b - Southern Outer Piedmont |
| er45d - Talladega Upland |
| er65a - Blackland Prairie |
| er65b - Flatwoods/Blackland Prairie Margins |
| er65d - Southern Hilly Gulf Coastal Plain |
| er65f - Southern Pine Plains and Hills |
| er65g - Dougherty Plain |
| er65i - Fall Line Hills |
| er65j - Transition Hills |
| er65p - Southeastern Floodplains and Low Terraces |
| er65q - Buhrstone/Lime Hills |
| er67f - Southern Limestone/Dolomite Valleys and Low Rolling Hills |
| er67g - Southern Shale Valleys |
| er67h - Southern Sandstone Ridges |
| er67i - Southern Dissected Ridges and Knobs |
| er68a - Cumberland Plateau |
| er68b - Sequatchie Valley |
| er68c - Plateau Escarpment |
