17 counties
Counties in Idaho
- Ada County1 water
- Bannock County1 water
- Blaine County4 waters
- Boise County3 waters
- Bonner County1 water
- Bonneville County1 water
- Clearwater County1 water
- Custer County1 water
- Elmore County1 water
- Fremont County1 water
- Gem County1 water
- Gooding County1 water
- Lemhi County1 water
- Nez Perce County1 water
- Owyhee County1 water
- Twin Falls County2 waters
- Valley County1 water