Region
United States
961
Colorado
42
Iraq
13
Afghanistan
11
California
8
Florida
8
Pakistan
7
Texas
7
Foreign countries
6
Iran
6
New Mexico
6
Wisconsin
6
Louisiana
5
Mexican-American Border Region
5
Utah
5
Washington (D.C.)
5
Alaska
4
China
4
Greece
4
Guam
4
Idaho
4
Massachusetts
4
Nevada
4
Oklahoma
4
Arizona
3
Arkansas River Valley
3
Asia
3
Atlantic Coast (U.S.)
3
Cache la Poudre River
3
Canada
3
Chesapeake Bay Watershed
3
Colorado River Watershed (Colo.-Mexico)
3
Cyprus
3
Europe
3
France
3
Gaza Strip
3
Gulf Coast (U.S.)
3
Hawaii
3
India
3
Mexico
3
Mexico, Gulf of
3
Middle East
3
Montana
3
New Jersey
3
New Orleans
3
New York
3
New York (State)
3
North Carolina
3
Puerto Rico
3
West Bank
3
more ...