Region
United States
155
Florida
101
Maryland, Southern
72
New York (State)
72
Mississippi
64
Texas
53
Floridan Aquifer
49
Louisiana
48
Montana
35
Arkansas
34
Southern Maryland
29
High Plains Aquifer
27
Kansas
26
New Jersey
25
Patapsco Aquifer
25
Houston Region
24
Maryland
24
Magothy Aquifer
23
Mississippi River Valley
23
Puerto Rico
21
Southern States
21
New Mexico
19
North Carolina
18
Alabama
17
Harris-Galveston Coastal Subsidence District (Tex.)
17
Pennsylvania
16
New Hampshire
15
Colorado
14
Gulf Coast
13
Minnesota
12
Aquia Formation
11
Gulf Coast (U.S.)
11
Oklahoma
11
Black Hills (S.D. and Wyo.)
10
Bucks County
10
Delaware
10
Wyoming
10
Chesapeake Bay Region (Md. and Va.)
9
Long Island
9
South Carolina
9
High Plains (U.S.)
8
Hudson River Watershed
8
North America
8
Palm Beach County
8
Albuquerque Region
7
Black Creek Aquifer (S.C. and N.C.)
7
Chesapeake Bay Region
7
Edwards Aquifer (Tex.)
7
Middle West
7
Oneida County
7
more ...