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Region
- MontanaNorthern Cheyenne Indian Reservation2
- Black Creek Aquifer (S.C. and N.C.)1
- Erie, Lake, Region1
- LouisianaMermentau River Watershed1
- MontanaBig Horn County1
- MontanaFort Peck Indian Reservation1
- MontanaLame Deer Creek1
- MontanaPorcupine Creek (Valley County)1
- MontanaValley County1
- New JerseyGreat Egg Harbor River Region1
- New Mexico1
- North CarolinaBladen County1
- North CarolinaRobeson County1
- Northern Cheyenne Indian Reservation (Mont.)1
- Rhineland (Germany)1
- Saint Clair, Lake, Region (Mich. and Ont.)1
- TexasEdwards Aquifer1
- TexasSan Antonio Region1