Region
Arizona
4
White Mountain Apache Tribe of the Fort Apache Reservation, Arizona
3
Blackfeet Indian Reservation
2
Blackfeet Tribe of the Blackfeet Indian Reservation of Montana
2
California
2
Montana
2
Pechanga Reservation
2
United States
2
Bill Williams River Watershed (Ariz.)
1
Colorado
1
Colorado River Indian Tribes of the Colorado River Indian Reservation, Arizona and California
1
Hualapai Indian Tribe of the Hualapai Indian Reservation, Arizona
1
Navajo Nation, Arizona, New Mexico & Utah
1
Nevada
1
Pyramid Lake Paiute Tribe of the Pyramid Lake Reservation, Nevada
1
West (U.S.)
1