Region
California
107
New Mexico
76
New York (State)
73
Wyoming
65
Arizona
62
United States
62
Colorado
59
Nevada
53
Florida
52
Texas
47
Minnesota
43
Oregon
38
Washington (State)
37
Idaho
33
Utah
31
Montana
29
Ohio
28
South Dakota
27
Tennessee
27
Arkansas
26
Nebraska
25
Mississippi
24
Pennsylvania
24
Kentucky
23
North Carolina
23
Hawaii
22
Kansas
22
High Plains Aquifer
20
Alabama
18
South Carolina
17
Southern States
17
Wisconsin
17
Georgia
16
Massachusetts
15
New Jersey
15
Long Island
14
Maryland
14
High Plains (U.S.)
13
Louisiana
13
North Dakota
12
San Joaquin Valley
12
Virginia
12
Alaska
11
Columbia Plateau
11
Floridan Aquifer
11
Illinois
11
Indiana
10
New Hampshire
10
Puerto Rico
10
West Virginia
10
more ...