Willow Creek (Snake River tributary)

Willow Creek
Willow Creek, Bonneville County, Idaho, USA
Location of the mouth of Willow Creek in Idaho
Location
CountryUnited States
StateIdaho
CountiesBonneville County, Idaho, Bingham County, Idaho
Physical characteristics
Source 
  locationeast of the Blackfoot Mountains, Bingham County, Idaho
  coordinates43°05′40″N 111°42′52″W / 43.09444°N 111.71444°W / 43.09444; -111.71444
  elevation6,568 ft (2,002 m)
MouthSnake River
  location
north of Idaho Falls, Bonneville County, Idaho
  coordinates
43°33′10″N 111°59′17″W / 43.55278°N 111.98806°W / 43.55278; -111.98806
  elevation
4,777 ft (1,456 m)
Length84 mi (135 km)

Willow Creek is a 84-mile (135 km) long tributary of the Snake River in the U.S. state of Idaho. Beginning at an elevation of 6,568 feet (2,002 m) east of the Blackfoot Mountains in southeastern Bingham County, it flows generally north into Bonneville County and past Bone. South of the town of Ririe, the creek is impounded by Ririe Dam, forming Ririe Reservoir. It then turns southwest, passing between Iona and Ucon, before bifurcating into two distributaries, North Fork Willow Creek and South Fork Willow Creek, at an elevation of 4,777 feet (1,456 m). Both forks reach the Snake River north of Idaho Falls.

Willow Creek has significant populations of brown trout.