Ivishak River

The Ivishak River is a 95-mile (153 km) tributary of the Sagavanirktok River in the North Slope Borough of the U.S. state of Alaska.[1] Fed by glaciers at the headwaters, the Ivishak flows northeast, then northwest, through the Philip Smith Mountains and the northern foothills of the Arctic National Wildlife Refuge. It enters the Sagavanirktok River on the coastal plain south of Prudhoe Bay.[3]

Ivishak River
Upper Ivishak River Valley
Location of the mouth of the Ivishak River in Alaska
Location
CountryUnited States
StateAlaska
BoroughNorth Slope
Physical characteristics
SourcePhilip Smith Mountains
  locationBrooks Range
  coordinates68°34′25″N 147°16′43″W[1]
  elevation5,258 ft (1,603 m)[2]
MouthSagavanirktok River
  location
55 miles (89 km) south of Prudhoe Bay[1]
  coordinates
69°29′55″N 148°30′22″W[1]
  elevation
538 ft (164 m)[1]
Length95 mi (153 km)[1]
TypeWild
DesignatedDecember 2, 1980

On December 2, 1980, 80 miles (129 km) of the Ivishak was designated a National Wild and Scenic River. The protected segments, including the headwaters, an unnamed tributary from Porcupine Lake, and all but the lowermost part of the main stem, lie within the wildlife refuge.[3]

See also

References

  1. "Ivishak River". Geographic Names Information System. United States Geological Survey. January 1, 2000. Retrieved September 3, 2013.
  2. Source elevation derived from Google Earth search using GNIS source coordinates.
  3. "Ivishak River, Alaska". National Wild and Scenic Rivers System. Retrieved September 3, 2013.


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