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Region
- Appalachian Region1
- Central Oklahoma Aquifer (Okla.)1
- FloridaHillsborough County1
- FloridaPalm Beach County1
- GeorgiaRichmond County1
- Hillsborough County (Fla.)1
- Indiana1
- KentuckyJefferson County1
- Lake Tahoe Basin National Forest (Calif. and Nev.)1
- LouisianaVernon Parish1
- Minnesota3
- MinnesotaMinneapolis Region1
- Mississippi1
- Monument Valley (Ariz. and Utah)1
- Naval Ordnance Station Louisville (Ky.)1
- New JerseyCumberland County1
- New JerseyGloucester County2
- New JerseyKettle Creek Watershed1
- New JerseyMaurice River1
- New JerseyMetedeconk River Watershed1