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Big Wood River facts for kids

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Big Wood River
Outside of Ketchum, Idaho.jpg
Big Wood River and Boulder Mountains,July 2009
Big Wood River is located in Idaho
Big Wood River
Big Wood River is located in the United States
Big Wood River
Location of the mouth of the Big Wood River in Idaho
Country United States
State Idaho
Region Blaine County, Lincoln County, Gooding County
Cities Sun Valley, Ketchum
Physical characteristics
Main source Sawtooth Range
Galena Summit, Blaine County
9,100 ft (2,800 m)
River mouth Malad River
Gooding County
3,460 ft (1,050 m)
Length 137 mi (220 km)
Basin features
Tributaries
  • Left:
    North Fork Big Wood River, East Fork Wood River
  • Right:
    Camas Creek (Big Wood River)

The Big Wood River is a 137-mile-long (220 km) river in central Idaho, United States, that is a tributary of the Malad River (which in turn is tributary to the Snake River and Columbia River).

Course

From its source in the Sawtooth Range near Galena Summit in the Sawtooth National Recreation Area, the Big Wood River generally flows south, between the Boulder Mountains to the north, Pioneer Mountains to the east, and the Smoky Mountains to the west. Highway 75 accompanies the river southward from Galena Summit, to an area north of Shoshone.

The river flows by Sun Valley and Ketchum, where it receives the tributary streams of Warm Springs Creek and Trail Creek. Below Ketchum, it is joined by the East Fork Wood River at Gimlet before passing by the small cities of Hailey and Bellevue. Continuing south, the river enters the Wood River Valley, the northern part of Magic Valley, after which it flows into Magic Reservoir. A tributary stream, Camas Creek, joins the river in Magic Reservoir.

Below Magic Dam, the Big Wood River enters Lincoln County, passing by many lava beds and irrigation canals before entering Gooding County. Just west of Gooding, the Big Wood River joins the Little Wood River to form the Malad River.

Big Wood River's water flow is affected by numerous irrigation reservoirs and canals on the river itself and its tributaries.

Variant names of the Big Wood River, according to the USGS, include Malad River, Malade River, Wood River, Poisonous Beaver River, and Sickley River.

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