Ugashik Lakes

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Upper Ugashik Lake
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Upper Ugashik Lake
Geographical location Alaska (USA)
Drain → Lower Ugashik Lake
Data
Coordinates 57 ° 40 ′  N , 156 ° 42 ′  W.
Ugashik Lakes (Alaska)
Ugashik Lakes
Altitude above sea level 4  m
surface 199.4 km²
length 27 km
width 9.2 km
Maximum depth 150 m
Middle deep 28.6 m
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Lower Ugashik Lake
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Geographical location Alaska (USA)
Tributaries from Upper Ugashik Lake
Drain Ugashik River
Data
Coordinates 57 ° 30 '  N , 156 ° 53'  W
Altitude above sea level 4  m
surface 182.3 km²
length 20 km
width 11.7 km
Maximum depth 120 m
Middle deep 35.7 m
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The Ugashik Lakes or Ugashik Lakes form a lake system on the Alaska Peninsula in the US state of Alaska .

The two lakes, Upper Ugashik Lake and Lower Ugashik Lake , are located approximately 120 km southwest of King Salmon in the Alaska Peninsula National Wildlife Refuge . The Lake Becharof is located 15 km northeast of the Upper Ugashik Lake . The Ugashik Narrows form a short narrow channel between the two lakes. Most of the tributaries of the lakes located at a height of 4  m arise on the northwest flank of the Aleutian chain .

Upper Ugashik Lake

The Upper Ugashik Lake is the northeastern and slightly higher lake. It covers an area of ​​199.4 km³. The mean water depth is 28.6 m. The maximum water depth is 150 m. The Mount Peulik volcano rises 10 km east of Upper Ugashik Lake and the Ugashik Caldera to the south .

Lower Ugashik Lake

The 182.3 km² Lower Ugashik Lake is 35.7 m deep on average. The maximum water depth is 120 m. The Ugashik River drains Lower Ugashik Lake north to Ugashik Bay and the Bering Sea . The village of Ugashik is located 25 km west of Lower Ugashik Lake .

Fish fauna

Of the five salmon species found in the lake system , sockeye salmon ( Oncorhynchus nerka ) and silver salmon ( Oncorhynchus kisutch ) are the most common. Freshwater fish native to the lakes are arctic grayling ( Thymallus arcticus ), dolly varden trout ( Salvelinus malma ), arctic char ( Salvelinus alpinus ), American arctic char ( Salvelinus namaycush ), pike ( Esox lucius ) and Prosopium cylindraceum ("round whitefish") . Both lakes are considered a good grayling area by anglers .

Individual evidence

  1. ^ Upper Ugashik Lake in the Geographic Names Information System of the United States Geological Survey
  2. ^ Lower Ugashik Lake in the United States Geological Survey's Geographic Names Information System
  3. ↑ a b c d e Michael R. Edwards, James P. Larson: Estimation of Coho Salmon Escapement in the Ugashik Lakes, Alaska Peninsula National Wildlife Refuge, Alaska, 2001-2003 (PDF, 74.0 KB) US Fish & Wildlife Service . April 2004. Retrieved December 9, 2017.