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Region
- Southern States4
- ColoradoDenver Region2
- Florida2
- Floridan Aquifer2
- Louisiana2
- Minnesota2
- Nevada2
- New MexicoAlbuquerque2
- PennsylvaniaBucks County2
- South Dakota2
- Tennessee, West2
- Yucca Mountain (Nev.)2
- Arikaree Formation1
- ArizonaAvra Valley1
- ArizonaTucson Basin1
- Arkansas1
- Big Sioux Aquifer (S.D.)1
- CaliforniaAntelope Valley1
- CaliforniaEdwards Air Force Base1
- CaliforniaSan Bernardino County1