Tanana River

Tanana River
Tanana River
Data
Water code	US :  1416408
location	Alaska (USA)
River system	Yukon River
Drain over	Yukon River  → Bering Sea
Confluence of	Chisana River and Nabesna River 63 ° 2 ′ 57 "  N , 141 ° 51 ′ 52"  W
Source height	516  m
muzzle	at Tanana in the Yukon River coordinates: 65 ° 8 ′ 31 "  N , 151 ° 58 ′ 36"  W 65 ° 8 ′ 31 "  N , 151 ° 58 ′ 36"  W
Mouth height	61  m
Height difference	455 m
Bottom slope	0.43 ‰
length	1060 km
Catchment area	114,000 km²
Outflow at the level at the mouth	MQ	3800 m³ / s
Left tributaries	Johnson River , Delta River , Nenana River , Kantishna River , Cosna River , Chitanana River
Right tributaries	Salcha River , Chena River
Medium-sized cities	Fairbanks
Small towns	North Pole
Communities	Nenana
Course of the Tanana River with source rivers Chisana River (right) and Nabesna River (left)
The Trans-Alaska Pipeline crosses the Tanana River

The Tanana River ( 'tænənɑː ) is a 1060 kilometer long left tributary of the Yukon River in the US state of Alaska , which flows into the Yukon River at Tanana . The word Tanana means “mountain river” in the Athapaskan language .

The river forms north of the Wrangell Mountains in the Interior from the confluence of the Chisana and Nabesna Rivers . It flows northeast first and then makes a turn northwest through Tetlin National Wildlife Refuge . There the Alaska Highway runs along the shore. In central Alaska , the river forms a swamp region known as the Tanana Valley . In this region the Nenana River and Kantishna River flow into the river.

Ice bet "Nenana Ice Classics"

The Tanana River with the wooden frame for the Nenana Ice Classics 2008

Since 1917 an "ice bet", the "Nenana Ice Classics", has been held on the Tanana River every winter. To do this, a wooden frame is frozen on the river and connected to a tower clock with a rope. As soon as the ice breaks and the frame floats away, the clock stops and marks the time when the ice melted. The earliest date for the ice melt to date was April 14, 2019. The previous record date was April 20 and was only hit twice in 1940 and 1998. The latest date was May 20th.

The Tanana ice is melting at the level of the town of Nenana on the 64th parallel, an average of 5.5 days earlier than it was in 1917. The ice bet thus provides important evidence of global warming .

Tributaries

Kalutna River Tok River Robertson River Johnson River Little Gerstle River Healy River Volkmar River Gerstle River Clearwater Creek Goodpaster River

Delta River Delta Creek Little Delta River Salcha River Little Salcha River Chena River North Fork South Fork Wood River Tatlanika River

Nenana River Teklanika River Seventeen Mile Slough Tolovana River Chatanika River Tatalina River Kantishna River Zitziana River Cosna River Chitanana River

Web links

Commons : Tanana River  - Collection of Images, Videos and Audio Files

• Tanana River in the United States Geological Survey's Geographic Names Information System

Individual evidence

1. ↑ Chisana River in the Geographic Names Information System of the United States Geological Survey
2. ^ Tanana River in the United States Geological Survey's Geographic Names Information System
3. ↑ ^{a b c} USGS - Water Fact Sheet - Largest Rivers in the United States (PDF file; 648 kB)
4. ↑ Centenary betting game in Alaska: The ice on the Tahana never broke this early . In: Spiegel Online . May 5, 2019 ( spiegel.de [accessed May 5, 2019]).
5. ↑ Alaska: Eiswette reveals global warming . Spiegel-online October 27, 2001