Geography
United States
7,539 results
Texas
2,542 results
China
373 results
Edwards Aquifer (Tex.)
232 results
Japan
125 results
North America
97 results
Appalachian Region
94 results
Taiwan
94 results
California
83 results
Canada
82 results
Mexico
82 results
Pennsylvania
81 results
Europe
80 results
New York (State)
75 results
Russia (Federation)
74 results
Brazil
64 results
Illinois
60 results
Spain
60 results
Florida
58 results
Tennessee
52 results
San Antonio
51 results
Korea (South)
48 results
France
46 results
Virginia
45 results
Nevada
44 results
Washington (State)
41 results
Bexar County
40 results
Michigan
40 results
South Carolina
38 results
Hays County
36 results
Italy
36 results
North Carolina
36 results
Travis County
35 results
Alabama
33 results
Arizona
33 results
Minnesota
33 results
Georgia
31 results
Ukraine
31 results
Wisconsin
31 results
India
30 results
Alaska
29 results
Colorado
29 results
Louisiana
29 results
Maryland
27 results
Yucca Mountain
27 results
Mexico, Gulf of
26 results
Turkey
26 results
Ohio
25 results
Germany
24 results
Mississippi River
24 results
more…