Region
United States
29
New York (State)
26
Colorado
21
Texas
13
Kansas
11
New Jersey
11
Nevada
8
Wisconsin
8
Florida
7
Irondequoit Creek Watershed
7
California
6
Missouri
6
Arizona
5
Colorado River Watershed (Colo.-Mexico)
5
Iowa
5
Kentucky
5
South Carolina
5
Washington (State)
5
Erie, Lake
4
Louisiana
4
Minnesota
4
Monroe County
4
North Carolina
4
North Dakota
4
Rhode Island
4
Scituate Reservoir
4
Snake River Plain (Idaho and Or.)
4
Tennessee
4
Trinity River Watershed
4
Virginia
4
Animas River Watershed (Colo. and N.M.)
3
Appalachian Region
3
Champlain, Lake
3
Connecticut
3
Croton River Watershed
3
Fort Polk
3
Jefferson County
3
Johnson County
3
Massachusetts
3
Michigan
3
Michigan, Lake
3
New Mexico
3
Ohio
3
South Dakota
3
Superior, Lake
3
Alabama
2
Alamosa River Watershed
2
Arkansas River
2
Arkansas River Valley
2
Cheney Reservoir Watershed
2
more ...