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Region
- Arkansas2
- Mississippi2
- TexasBuffalo Bayou Watershed2
- British Columbia1
- Florida1
- Floridan Aquifer1
- Mississippi River Valley1
- NebraskaBuffalo County1
- NebraskaPlatte River Watershed1
- New York (State)Batavia1
- New York (State)Cortland County1
- New York (State)Croton River Watershed1
- New York (State)Putnam County1
- Sabine River Watershed (Tex. and La.)1
- Washington (State)Puget Sound Region1