Geography
United States
1,036 results
Texas
472 results
Edwards Aquifer (Tex.)
230 results
California
105 results
Great Lakes (North America)
65 results
Florida
50 results
San Antonio
50 results
Bexar County
39 results
Hays County
36 results
Travis County
32 results
Chesapeake Bay (Md. and Va.)
30 results
Massachusetts
30 results
Canada
28 results
Chesapeake Bay Watershed
26 results
North Carolina
26 results
Wisconsin
23 results
New York (State)
21 results
West (U.S.)
20 results
Ohio
19 results
Washington (D.C.)
18 results
Galveston Bay
17 results
Michigan
17 results
Arizona
16 results
Idaho
16 results
Kansas
16 results
Medina County
16 results
Netherlands
16 results
Oregon
16 results
Washington (State)
16 results
Great Lakes Region (North America)
15 results
Long Island Sound (N.Y. and Conn.)
15 results
New Jersey
15 results
Galveston Bay (Tex.)
14 results
Minnesota
14 results
Nebraska
14 results
Australia
13 results
Hawaii
13 results
Virginia
13 results
Alaska
12 results
Everglades
12 results
Louisiana
12 results
Mississippi
12 results
Montana
12 results
Pennsylvania
12 results
Colorado
11 results
Comal County
11 results
Europe
11 results
Indiana
11 results
Iowa
11 results
Missouri
11 results
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