The Big Wood River is a 137-mile-long (220 km)[3] 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).

Big Wood River
Big Wood River and Boulder Mountains,July 2009
Location of the mouth of the Big Wood River in Idaho Show map of Idaho Big Wood River (the United States) Show map of the United States
Location
Country	United States
State	Idaho
Region	Blaine County, Lincoln County, Gooding County
Cities	Sun Valley, Ketchum
Physical characteristics
Source	Sawtooth Range
• location	Galena Summit, Blaine County
• coordinates	43°51′38″N 114°42′48″W[1]
• elevation	9,100 ft (2,800 m)[2]
Mouth	Malad River
• location	Gooding County
• coordinates	42°56′42″N 114°47′44″W[1]
• elevation	3,460 ft (1,050 m)[2]
Length	137 mi (220 km)[3]
Discharge
• location	below Magic Reservoir[4]
• average	464 cu ft/s (13.1 m3/s)[4]
• minimum	0 cu ft/s (0 m3/s)
• maximum	9,800 cu ft/s (280 m3/s)
Basin features
Tributaries
• left	North Fork Big Wood River, East Fork Wood River
• right	Camas Creek (Big Wood 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.^{[citation needed]} Here, it carved Black Magic Canyon.[5]

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,[Note 1] 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.[1]

See also

• List of Idaho rivers
• List of longest streams of Idaho

Notes

References

External links

Media related to Big Wood River at Wikimedia Commons

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