Thomsen River

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Thomsen River
Data
location Banks Island , Northwest Territories ( Canada )
River system Thomsen River
origin nameless lake in the central east of Banksinsel
72 ° 16 ′ 40 ″  N , 120 ° 46 ′ 20 ″  W
Source height approx.  270  m
muzzle Castel Bay, McClure Strait Coordinates: 74 ° 8 '2 "  N , 119 ° 45' 11"  W 74 ° 8 '2 "  N , 119 ° 45' 11"  W.
Mouth height 0  m
Height difference approx. 270 m
Bottom slope approx. 0.81 ‰
length approx. 335 km
Catchment area approx. 10,800 km²
Left tributaries Muskox River
Right tributaries Dissection River, White Sand River
Bird sanctuary Banks Iceland Migratory Bird Sanctuary No. 2 , Aulavik National Park

The Thomsen River is an approximately 335 km long river in the north of Banks Island in the Northwest Territories belonging to Canada .

River course

The Thomsen River has its origin in a 270  m high nameless lake in the central east of the Banksinsel, about 20 km from the east coast. The Thomsen River flows in a predominantly northerly direction. There is a lake area on the upper reaches. The Thomsen River has three major tributaries: the mouth of the Dissection River is at river 130, that of the White Sand River at 110 (both from right) and that of the Muskox River (from left) at 40. The Thomsen River finally flows into the 14 km long and up to 6 km wide Castel Bay on the north coast of Banks Island, which opens north to McClure Strait . The catchment area covers an estimated 10,800 km². In the winter months the river is frozen. The Thomsen River can be canoeed in summer.

Toponym

Vilhjálmur Stefánsson named the river after Karl Thompsen, a member of his Canadian Arctic Expedition , who starved to death on Banks Island in 1916.

fauna

The Banks Island Migratory Bird Sanctuary No. 2 covers the lower 73 kilometers of the Thomsen River including the estuary. The bird sanctuary is now part of the Aulavik National Park . The lower 185 kilometers of the Thomsen River lie within the national park. It is estimated that 25,000 birds of the little snow goose ( Anser caerulescens caerulescens ) can be found in the lower reaches and in the mouth of the Thomsen River during the summer months. These do not use the area for breeding, but for changing plumage .

In the Thomsen River six types of fish: lake trout , Arctic char , Coregonus sardinella (least cisco), American vendace , nine-spined stickleback and fourhorn sculpin . The American Arctic char can only be found in fresh water, while the other five species also spend a part of their life in salt water.

Web links

Individual evidence

  1. ^ Gazetteer of the Northwest Territories . NWT Cultural Places Program, Prince of Wales Northern Heritage Center 2017, accessed November 9, 2018.
  2. ↑ a b c Banks Island Migratory Bird Sanctuary No. 2 . Government of Canada. Retrieved November 6, 2018.
  3. ↑ Aulavik National Park . Government of Canada. Retrieved November 6, 2018.