3.1.2 Groundwater Availability by Aquifer (table)
| Aquifer | Sustain-able Yield Minimum | Sustain-able Yield Maximum | Projected Demand with 75% Agricult-ural Use in 2010 | Projected Demand with 75% Agricult-ural Use in 2050 | Projected Demand in 2009 |
|---|---|---|---|---|---|
| Paleozoic-rock Aquifer Study Basin | 27 | 70 | 4 | 5 | none |
| Crystalline-rock Aquifer Study Basins (Piedmont Region) | 3 | 9 | none | none | 1 |
| Crystalline-rock Aquifer Study Basins (Blue Ridge Region) | 19 | 99 | none | none | 2 |
| Cretaceous Aquifer in Georgia's Coastal Plain | 347 | 445 | 247 | 303 | none |
| Claiborne Aquifer in Georgia's Coastal Plain | 144 | 640 | 148 | 174 | none |
| Upper Floridan Aquifer: South Central Georgia and Eastern Coastal Plain (Modeled Together) | 880 | 992 | 580 | 739 | none |
| Upper Floridan Aquifer: Dougherty Plain | 235 | 330 | 587 | 681 | none |
| Upper Floridan Aquifer: South Central Georgia | 615 | 832 | 366 | 471 | none |
Coastal Area
The Upper Floridan aquifer along the coast was intensively studied before regional water planning began. EPD's 7-year study of coastal groundwater has shown that, in some parts of the region, availability is limited by movement of saltwater into the aquifer.