Region
United States
127
Canada
16
Europe
7
India
7
Columbia River Watershed
6
Northwest, Pacific
6
California
5
Developing countries
4
Korea (South)
4
Tennessee
4
Germany
3
Pacific Northwest
3
Pakistan
3
Africa
2
Brazil
2
Chornobylʹ
2
Foreign countries
2
New England
2
OECD countries
2
Russia (Federation)
2
Santa Clara County
2
Tennessee River Region
2
Ukraine
2
Yukon
2
Zimbabwe
2
Argentina
1
Asia
1
Austria
1
Bonneville Dam (Or. and Wash.)
1
Cherokee Lake
1
China
1
Chixoy River Watershed
1
Chixoy River Watershed (Guatemala and Mexico)
1
Columbia River
1
Congo (Democratic Republic)
1
Connecticut
1
Costa Rica
1
Egypt
1
Energy industries
1
European Economic Community countries
1
Fort Loudoun Lake (Tenn.)
1
France
1
Gambia
1
Guatemala
1
Henan Sheng
1
Holston River Watershed
1
Holston River Watershed (Tenn.)
1
India, Northeastern
1
Indonesia
1
Japan
1
more ...