Region
Florida
82
California
78
Colorado
66
Minnesota
51
New York (State)
51
Wisconsin
48
Kansas
45
Oregon
44
United States
39
Texas
37
Pennsylvania
35
Washington (State)
35
Ohio
31
North Carolina
30
Idaho
29
Missouri
29
New Jersey
28
Louisiana
27
Arizona
25
Georgia
25
Montana
23
Wyoming
23
Virginia
22
Arkansas
21
Indiana
21
Massachusetts
21
Illinois
20
North Dakota
20
New Mexico
19
South Carolina
17
Kentucky
15
Nebraska
15
Utah
15
Connecticut
14
Nevada
14
South Dakota
14
Floridan Aquifer
13
Maryland
13
Michigan
13
Southern States
13
Clark Fork Watershed (Mont. and Idaho)
11
Hawaii
11
Oklahoma
11
Tennessee
11
Alaska
10
Illinois River Watershed
10
Iowa
10
Willamette River
10
Alabama
9
Idaho National Laboratory Region
9
more ...