Region
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Inland Empire
1
Islands of the Pacific
1
Jefferson Parish
1
Jefferson Parish (La.)
1
Los Angeles River
1
Los Angeles River (Calif.)
1
Lynnhaven River Watershed
1
Lynnhaven River Watershed (Va.)
1
Mancos Shale
1
Mediterranean Region
1
Miami-Dade County
1
Middle Atlantic States
1
Mississippi River Valey
1
Mississippi Sound
1
Murfree Spring (Murfreesboro, Tenn.)
1
Murfreesboro
1
Neuse River Watershed
1
Neuse River Watershed (N.C.)
1
New Mexico
1
New York (State)
1
Nickajack Trace (Murfreesboro, Tenn.)
1
North Carolina
1
North Slope
1
North Slope (Alaska)
1
Northeastern States
1
Northwest, Pacific
1
Oakland Spring (Murfreesboro, Tenn.)
1
Phoenix
1
Pilbara (W.A.)
1
Pima County
1
Pitchfork Ranch
1
Pitchfork Ranch (N.M.)
1
Prince William Sound
1
Prince William Sound (Alaska)
1
Rio Grande Watershed (Colo.-Mexico and Tex.)
1
Russia (Federation)
1
Rutherford County
1
Saint Bernard Parish
1
Saint Bernard Parish (La.)
1
Saint Louis River (Minn. and Wis.)
1
Saint Vincent National Wildlife Refuge
1
Saint Vincent National Wildlife Refuge (Fla.)
1
Salt River (Gila County and Maricopa County, Ariz.)
1
San Francisco Bay (Calif.)
1
Santa Cruz River (Ariz. and Mexico)
1
Santa Rosa County
1
Santa Rosa County (Fla.)
1
Savannah River Site
1
Scotland
1
Sierra National Forest
1
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