Region
Animas River Watershed (Colo. and N.M.)
2
Colorado
2
Illinois River Watershed
2
Washington (State)
2
Wyoming
2
Yakima River Watershed
2
Boulder Reservoir
1
Colorado River Watershed (Colo.-Mexico)
1
Kansas
1
Kansas River Watershed
1
Monmouth County
1
Montana
1
Nebraska
1
New Jersey
1
Teton County
1
United States
1
Yampa River Watershed
1