Region
New York (State)
56
Oswego County
29
Arizona
28
Mississippi
26
Louisiana
24
Florida
23
High Plains Aquifer
21
Arkansas
15
California
14
Maryland
12
Floridan Aquifer
11
Kansas
10
Chester County
9
Magothy Aquifer
9
Pennsylvania
9
Chesapeake Bay Region (Md. and Va.)
8
New Mexico
8
Southern States
8
Maryland, Southern
7
Maricopa County
6
Montana
6
Nevada
6
Puerto Rico
6
Albuquerque Region
5
Idaho
5
Minnesota
5
Mississippi River Valley
5
Navajo County
5
Nebraska
5
North Carolina
5
Oklahoma
5
Wisconsin
5
Wyoming
5
Yuma County
5
Coconino County
4
Colorado
4
Hudson River Watershed
4
Long Island
4
South Carolina
4
Steuben County
4
Annapolis Region
3
Apache County
3
Duval County
3
Gila River Watershed (N.M. and Ariz.)
3
Mississippi River
3
Mojave River Watershed
3
Ohio
3
Oneida County
3
Pima County
3
Tennessee
3
more ...