Chena River

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Coordinates: 64°47′44″N 147°54′43″W / 64.79556°N 147.91194°W / 64.79556; -147.91194
Chena River
Chena River paddle-wheeler.jpg
A paddle-wheel steamer on the Chena River near Fairbanks
Country United States
State Alaska
Borough Fairbanks North Star
Source confluence of the river's north and west forks
 - location near Chena Hot Springs
 - elevation 1,024 ft (312 m) [1]
 - coordinates 65°03′18″N 146°10′45″W / 65.05500°N 146.17917°W / 65.05500; -146.17917 [2]
Mouth Tanana River [2]
 - location 6.5 miles (10.5 km) west-southwest of Fairbanks
 - elevation 423 ft (129 m) [2]
 - coordinates 64°47′44″N 147°54′43″W / 64.79556°N 147.91194°W / 64.79556; -147.91194 [2]
Length 100 mi (161 km) [2]
Basin 1,980 sq mi (5,128 km2) [3]
Discharge for Fairbanks
 - average 1,336 cu ft/s (37.8 m3/s) [4]
 - max 74,400 cu ft/s (2,106.8 m3/s)
 - min 120 cu ft/s (3.4 m3/s)
Location of the mouth of the Chena River in Alaska

The Chena River /ˈi.nə/ is a 100-mile (160 km) tributary of the Tanana River in the Interior region of the U.S. state of Alaska. It flows generally west from the White Mountains to the Tanana River near the city of Fairbanks, which is built on both sides of the river.[5] The Tanana empties into the 2,300-mile (3,700 km) long Yukon River.

Named tributaries of the Chena River include the North Fork, South Fork, West Fork, Middle (East) Fork and the Little Chena River.[5] The Chena River State Recreation Area surrounds much of the upper half of the main stem.[5] The Chena River is used for recreational fishing and boating.[3] During the winter months, it is also traveled by snowmachines and mushers (sled dogs).

The Chena River Lakes Flood Control Project dam is about 40 miles (64 km) up the Chena River from Fairbanks. The dam was built in response to the 1967 Fairbanks flood, which inundated much of the city. When closed, the dam impounds water and, when the inflow is high enough, diverts it about 8 miles (13 km) to the Tanana River near North Pole, upstream of Fairbanks and the natural mouth of the Chena.[6]

Fish[edit]

The Chena River supports populations of many fish species, including Arctic grayling, burbot, chum salmon, humpback whitefish, king salmon, least cisco, longnose suckers, northern pike, round whitefish, and sheefish. Easily accessible from Fairbanks, the Chena is the most popular sport-fishing river in interior Alaska.[3]

Overfishing for grayling reduced their number in the Chena to "dangerous levels" by the mid-1980s. In the 21st century, sport fishing for grayling, which grow in length to 18 inches (46 cm) in the upper river, is limited to catch and release.[3]

Boating[edit]

Easy access to the river from Chena Hot Springs Road, the Chena River Recreation Area, four bridges, and elsewhere make a wide variety of float trips possible. Most of the river is rated Class I (easy) on the International Scale of River Difficulty; however, the upper reaches along the North Fork near Chena Hot Springs are "extremely swift" with few safe eddies and are rated Class II (medium). High water increases these difficulty ratings.[3]

Dangers on the North Fork include a much narrower channel than that of the main stem, possible logjams, overhanging vegetation, and shallows, any of which may require a portage. Dangers below that include possible overhangs, logjams, and channel braiding. In the early season (June), boaters may encounter ice jams anywhere along the river.[3]

A panorama from the banks of the Chena River in Fairbanks

See also[edit]

References[edit]

  1. ^ Derived by entering source coordinates in Google Earth.
  2. ^ a b c d e "Chena River". Geographic Names Information System. United States Geological Survey. January 1, 2000. Retrieved October 25, 2013. 
  3. ^ a b c d e f Jettmar, Karen (2008) [1993]. The Alaska River Guide: Canoeing, Kayaking, and Rafting in the Last Frontier (3rd ed.). Birmingham, Alabama: Menasha Ridge Press. pp. 105–07. ISBN 978-0-89732-957-6. 
  4. ^ "USGS Gage #15514000 on the Chena River at Fairbanks, AK". National Water Information System. U.S. Geological Survey. 1948–2012. Retrieved 2013-11-02. 
  5. ^ a b c Alaska Atlas & Gazetteer (7th ed.). Yarmouth, Maine: DeLorme. 2010. pp. 115–16, 126, 145. ISBN 978-0-89933-289-5. 
  6. ^ Rozell, Ned (September 11, 2003). "Fixing the Fatal Flaw of Fairbanks". Alaska Science Forum. University of Alaska Fairbanks. Retrieved October 25, 2013.