Pahsimeroi River

The Pahsimeroi River is a 58.7-mile-long (94.5 km)[4] river in Idaho in the United States. It is a tributary of the Salmon River, which in turn is tributary to the Snake River and Columbia River.

Pahsimeroi River
Pahsimeroi River is located in Idaho
Pahsimeroi River
Location of the mouth of the Pahsimeroi River in Idaho
Pahsimeroi River is located in the United States
Pahsimeroi River
Pahsimeroi River (the United States)
Location
CountryUnited States
StateIdaho
CountiesLemhi, Custer
Physical characteristics
Source 
  coordinates44°4′22″N 113°40′14″W[1]
  elevation7,745 ft (2,361 m)[2]
MouthSalmon River
  coordinates
44°41′31″N 114°2′55″W[1]
  elevation
4,640 ft (1,410 m)[2]
Length59 mi (95 km)
Basin size827 sq mi (2,140 km2)[3]
Discharge 
  locationat mouth[3]
  average230 cu ft/s (6.5 m3/s)[3]
  minimum87 cu ft/s (2.5 m3/s)
  maximum710 cu ft/s (20 m3/s)

Course

From its source in Custer County, at the confluence of the West Fork and East Fork headwaters, the Pahsimeroi River flows generally northwest, through the Pahsimeroi Valley, between the Lemhi Range to the east, and the Lost River Range and to the west.

The Pahsimeroi River joins the Salmon River near Ellis, Idaho, upriver from Salmon, Idaho.

River modification

The water of the Pahsimeroi River and its tributaries is used for irrigation agriculture. All of the river's mainstem tributaries are wholly diverted and totally disconnected year round due to diversion for irrigation.[5]

See also

References

  1. U.S. Geological Survey Geographic Names Information System: Pahsimeroi River, USGS, GNIS
  2. Google Earth elevation for GNIS coordinates.
  3. Water Resource Data, Idaho, 2005, USGS.
  4. U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data. The National Map, accessed May 3, 2011
  5. Salmon Subbasin Plan, Northwest Power and Conservation Council



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