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Region
- Arkansas2
- Mississippi2
- New Mexico2
- Rio Grande Valley2
- Santa Fe Group2
- High Plains Aquifer1
- Kansas1
- New JerseyCamden County1
- New JerseyGloucester County1
- PennsylvaniaDelaware County1
- PennsylvaniaPhiladelphia County1
- Puerto RicoDemajagua River Watershed1
- Puerto RicoEspíritu Santo River Watershed1
- Puerto RicoFajardo Region1
- Wilcox Group1