Cayoosh Creek

from Wikipedia, the free encyclopedia
Cayoosh Creek
Cayoosh-creek.jpg
Data
location British Columbia ( Canada )
River system Fraser River
Drain over Seton River  → Fraser River  → Pacific Ocean
Headwaters Cayoosh Range ( Pacific Ranges )
50 ° 23 ′ 16 ″  N , 122 ° 31 ′ 18 ″  W.
Source height approx.  2030  m
muzzle south of Lillooet in the Seton River Coordinates: 50 ° 40 ′ 7 "  N , 121 ° 57 ′ 43"  W 50 ° 40 ′ 7 "  N , 121 ° 57 ′ 43"  W
Mouth height approx.  200  m
Height difference approx. 1830 m
Bottom slope approx. 28 ‰
length 66 km
Catchment area 885 km²
Discharge at gauge 08ME002
A Eo : 885 km²
at the mouth 		MQ 2000/2014
Mq 2000/2014
 		7.6 m³ / s
8.6 l / (s km²)
Flowing lakes Duffey Lake
Diverting part of the river water to Seton Lake
Duffey Lake

Duffey Lake

The Cayoosh Creek is a 66 km long right tributary of the Seton River in the Canadian province of British Columbia .

River course

The Cayoosh Creek rises at an altitude of about 2030  m on the southeast slope of the 2561  m high Cayoosh Mountain in the Cayoosh Range , a part of the Pacific Ranges . Cayoosh Creek initially flows in an easterly direction. After 16 km it reaches the western end of Duffey Lake , which it flows through in an easterly direction. Then the Cayoosh Creek turns to the northeast and after another 44 km reaches the Seton River, 3 km above its confluence with the Fraser River . The British Columbia Highway 99 (Duffey Lake Road) runs along the river.

Walden North Hydroelectric Power Station

2.5 km above the mouth there is a dam above Pix Falls on Cayoosh Creek. Most of the river water is directed to the downstream Walden North hydropower station . This was put into operation in 1992. A 250 m long pipe and a 100 m long pressure tunnel feed the water to the power plant. This has 5 Francis turbines with a total output of 16 MW. Below the hydroelectric power station, some of the water is fed to Seton Lake via an underground pipeline . The rest of the water is returned to nearby Cayoosh Creek. How much water goes where depends, among other things, on the season and serves to maintain the salmon migration into Seton Lake and its tributaries. For the last 2.5 km of Cayoosh Creek, the remaining amount of water remains in the river bed. About 700 m above the mouth, the river crosses the Seton Canal by means of a culvert .

Hydrology

The catchment area of ​​Cayoosh Creek covers 885 km². The mean discharge at the mouth is approximately 7.6 m³ / s.

Others

The Seton River was previously considered a tributary of Cayoosh Creek. The Cayoosh Creek Indian Reservation is located at the mouth of the Seton River south of the small town of Lillooet .

Web links

Commons : Cayoosh Creek  - Collection of Images, Videos, and Audio Files

Individual evidence

  1. ^ A b c Government of Canada: Historical Hydrometric Data Search Results: Station 08ME002
  2. ↑ a b c Walden North . Innergex. Retrieved February 23, 2018.
  3. ↑ a b Seton River Instream Flow Study (PDF, 6.7 MB) Triton Environmental Consultants Ltd. for BC Hydro. January 1996. Retrieved February 23, 2018.
  4. ↑ Seton River . In: BC Geographical Names (English)