Yaak River
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Yaak River Yahk River |
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 Yaak River at Yaak in Montana |
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| Data | ||
| Water code | US : 793580 | |
| location |
British Columbia (Canada), Montana (USA) |
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| River system | Columbia River | |
| Drain over | Kootenay River → Columbia River → Pacific Ocean | |
| source | on Yahk Mountain in the Purcell Mountains 49 ° 12 '35 " N , 115 ° 42' 41" W |
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| Source height | 1498 m | |
| muzzle |
Kootenay River near Troy (Montana) Coordinates: 48 ° 33 ′ 40 " N , 115 ° 58 ′ 37" W 48 ° 33 ′ 40 " N , 115 ° 58 ′ 37" W. |
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| Mouth height | 561 m | |
| Height difference | 937 m
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| Catchment area | 1983 km² | |
| Outflow at the level at the mouth |
MQ MHQ |
24 m³ / s 328 m³ / s |
| Left tributaries | East Fork Yaak River , South Fork Yaak River | |
| Right tributaries | West Fork Yaak River | |
 Upper Yaak Falls |
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 Lower Yaak Falls |
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 Location of the Yaak River in the Kootenay River system |
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The Yaak River or Yahk River in Canada is a tributary of the Kootenai River in the US state of Montana and in the Canadian province of British Columbia .
Course of the river
The river has its origins in southeastern British Columbia near the the Purcell Mountains belonging Yahk Mountain . The river crosses the border into Montana and then receives the East Fork Yaak River first and then the West Fork Yaak River . Also known as the West Yahk River , it rises near Rock Candy Mountain , then flows northeast into British Columbia before returning southeast to Montana and merging with the Yaak River.
The South Fork Yaak River flows below the confluence , before the river makes a wide curve to the west and later to the south again. Numerous creeks flow into it , including Spread Creek, Hellroaring Creek and Burnt Creek (this is also known as Burnt Grizzly Bear Creek ). At Troy , the Yaak River finally flows into the Kootenai River.
Hydrography
The United States Geological Survey operates a gauge at the estuary near Troy . The annual mean flow rate of the river between 1957 and 2004 was 24 m³ / s. On May 16, 1997, the highest observed discharge rate of 330 24 m³ / s was measured, the lowest value on September 19, 2007 was around 1.4 m³ / s.
The catchment area covers a total of 1983 km² and most of it is in Montana within the Kootenai National Forest . Across the Kootenay River, the Yaak River is part of the Columbia River system .
Name of the river
According to the British Columbia Geographical Names Information System, the river name "Yahk" probably comes from the word "a'k" from the Kutenai and means either "arrow" or "bow" and refers to either the Yaak River or the Kootenay River. This is not entirely clear. The southward curve of the Kootenay River from Canada to the United States and back is understood as an arc and the yaak is therefore probably the "arrow".
According to the United States Geological Survey, there are several variants of the name, including A'ak, Yaac, Yahk, Yahkh, and Yak.
See also
- Yahk (place northwest of the river)
Individual evidence
- ^ A b Yaak River in the Geographic Names Information System of the United States Geological Survey , USGS , GNIS
- ↑ a b Yahk River . In: BC Geographical Names (English)
- ↑ The name of this river is spelled "Kootenai River" in the United States.
- ↑ Montana Water Resources Data, 2004 (PDF; 1.5 MB). Page 329f USGS