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Region
- Gulf Coast (U.S.)9
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- Texas7
- Mississippi3
- PennsylvaniaBucks County2
- Sunbelt States2
- TexasEdwards Plateau Region2
- TexasTrinity River Watershed2
- Arkansas1
- Black Creek Aquifer (S.C. and N.C.)1
- FloridaOrange County1
- FloridaOrlando Region1
- Michie, Lake (N.C.)1
- Middle West1
- Mississippi Embayment1
- MontanaFort Peck Indian Reservation1
- MontanaPorcupine Creek (Valley County)1
- MontanaValley County1
- South Carolina1
- Springfield (Bucks County, Pa. : Township)1