Detailed information about geology of all principal aquifers is available from the USGS Ground Water Atlas
| Primary Lithologies |
Aquifers
|
| Sand and Gravel |
- Basin and Range basin-fill aquifers
- California Coastal Basin aquifers
- Central Valley aquifer system
- Columbia Plateau basin-fill aquifers
- Glacial aquifer system
- High Plains aquifer
- Rio Grande aquifer system
- Snake River Plain basin-fill aquifers
- Surficial aquifer system overlying the Floridan
|
| Semiconsolidated Sand |
- Coastal Lowlands aquifer system
- Mississippi Embayment aquifer system
- Northern Atlantic Coastal Plain aquifer system
- Texas Coastal Uplands aquifer system
|
| Sandstone Rock |
- Cambrian-Ordovician aquifer system
- Denver Basin aquifer system
- Early Mesozoic basin aquifers
- Valley and Ridge non-carbonate-rock aquifers
|
| Carbonate Rock |
- Basin and Range carbonate-rock aquifers
- Biscayne aquifer
- Floridan aquifer system
- Piedmont and Blue Ridge carbonate-rock aquifers
- Valley and Ridge carbonate-rock aquifers
|
| Crystalline Rock |
- Piedmont and Blue Ridge crystalline-rock aquifers
- New England crystalline-rock aquifers
|
| Basaltic Rock |
- Columbia Plateau basaltic-rock aquifers
- Hawaiian volcanic-rock aquifers
- Snake River Plain basaltic-rock aquifers
|
| Sandstone and Carbonate Rock |
- Edwards-Trinity aquifer system
|