Duncan River
| Duncan River | ||
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| Data | ||
| location | British Columbia ( Canada ) | |
| River system | Columbia River | |
| Drain over | Kootenay River → Columbia River → Pacific | |
| Headwaters | Southeast slope of Mount Duncan 51 ° 2 ′ 21 ″ N , 117 ° 17 ′ 20 ″ W |
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| Source height | approx. 2300 m | |
| muzzle | in the north arm of Kootenay Lake coordinates: 50 ° 10 ′ 24 " N , 116 ° 55 ′ 40" W 50 ° 10 ′ 24 " N , 116 ° 55 ′ 40" W |
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| Mouth height | 532 m | |
| Height difference | approx. 1768 m | |
| Bottom slope | approx. 15 ‰ | |
| length | approx. 115 km | |
| Catchment area | approx. 4760 km² | |
| Discharge at level 08NH118 A Eo : 4080 km² Location: 11 km above the mouth |
MQ 1964/2016 Mq 1964/2016 |
163 m³ / s 40 l / (s km²) |
| Right tributaries | Westfall River, Lardeau River | |
| Reservoirs flowed through | Duncan Lake | |
 Location of the Duncan River in the Kootenay River system |
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The Duncan River is an approximately 115 kilometers long river in the Canadian province of British Columbia . It is part of the Columbia River Basin, to which it is connected by Kootenay Lake and the Kootenay River . It delimits the Selkirk Mountains in the west from the Purcell Mountains in the east.
course
The Duncan River rises east of Mount Duncan at an altitude of about 2300 m . It flows south through the Purcell Trench between the Selkirk and Purcell Mountains. It flows into Duncan Lake , a former natural lake that was enlarged by the Duncan Dam. Just below the dam, the Lardeau River , its largest tributary, flows to the right. The Duncan River finally flows further south on the north arm of Kootenay Lake into the Kootenay River.
Hydrology
The Duncan River drains an area of about 4760 km². The mean discharge below the confluence of the Lardeau River is 163 m³ / s. The highest discharges are usually measured between June and August.
history
The Duncan River was named after John ("Jack") Duncan, a prospector and candidate for the Legislative Council of the Kootenay Land District in 1866.
On some early maps, Duncan Lake was named Upper Kootenay Lake or Howser Lake , and the name Duncan has prevailed since 1912 .
Before the Duncan Dam was built, the river served as the main route into the valley, used by the mining and timber industries. The river was navigable across Kootenay Lake to Bonners Ferry in Idaho .
The Duncan Dam was completed in 1967, the first of Canada's three Columbia River Treaty dams . Its aim is to work with the Libby Dam to regulate Kootenay Lake to ensure adequate water flow for the Kootenay Canal and the Corra Linn Dam projects. The Duncan Dam does not produce electricity. Duncan Lake was originally only 25 kilometers long and now measures 45 kilometers.
Individual evidence
- ^ A b c Government of Canada: Historical Hydrometric Data Search Results: Station 08NH118
- ^ Duncan River . In: BC Geographical Names (English)
- ↑ Duncan Lake . In: BC Geographical Names (English)
- ^ Duncan Dam in the Virtual Museum ( Memento from September 17, 2008 in the Internet Archive )