Thompson River (Fraser River)

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Thompson River
Thompson River catchment area

Thompson River catchment area

Data
location British Columbia ( Canada )
River system Fraser River
Drain over Fraser River  → Pacific Ocean
confluence from North and South Thompson Rivers at Kamloops
50 ° 40 ′ 52 ″  N , 120 ° 20 ′ 23 ″  W
Source height 1113  m
muzzle near Lytton in the Fraser River Coordinates: 50 ° 14 '8 "  N , 121 ° 35' 0"  W 50 ° 14 '8 "  N , 121 ° 35' 0"  W.
Mouth height 472  m
Height difference 641 m
Bottom slope 4.2 ‰
length 151 km
Catchment area 55,400 km²
Discharge at the gauge near Spences Bridge
A Eo : 55,400 km²
Location: 27 km above the mouth 		MQ 1952/2015
Mq 1952/2015
 		776 m³ / s
14 l / (s km²)
Left tributaries Nicola River
Right tributaries Deadman River , Bonaparte River
Flowing lakes Kamloops Lake
Medium-sized cities Kamloops
Thompson River

Thompson River

The Thompson River is a major orographic left tributary of the Fraser River in the southern Canadian province of British Columbia .

It was named in 1808 by Simon Fraser after the explorer David Thompson , who was the first to explore the entire length of the Columbia River . The upper reaches consists of two main rivers, the South Thompson River and the North Thompson River. Together with its headwaters, the North Thompson River, it reaches a length of 489 km.

The South Thompson River (332 km length measured from the source of the tributary Shuswap River , 17,800 km² catchment area) begins at the outlet from Little Shuswap Lake and flows in a south-westerly direction through a wide valley to Kamloops , where it joins the North Thompson River . The Highway 1 , the Trans-Canada Highway and the main line of the Canadian Pacific Railway running along the river. Shuswap Lake is fed by the Shuswap River in the south, the Seymour River in the northeast and the Adams River in the north.

The North Thompson River (338 km length, 20,700 km² catchment area, 425 m³ / s mean discharge) rises in the mountains west of Valemount and flows south to Kamloops and into the South Thompson. Highway 5 and the Canadian National Railway run along the river . The North Thompson Valley forms the main access from the south of the province to Yellowhead Pass , the lowest pass crossing over the Rocky Mountains .

Just west of Kamloops is Kamloops Lake . At Savona , the river emerges from the approximately 30-kilometer-long lake. The Thompson River flows through a canyon between Ashcroft and Lytton . The river joins the Fraser River near Lytton .

North Thompson River
Bridge over the North Thompson River at Kamloops

Bridge over the North Thompson River at Kamloops

Data
River system Fraser River
Drain over Thompson River → Fraser River
Headwaters Cariboo Mountains
52 ° 38 ′ 39 "  N , 119 ° 42 ′ 36"  W.
Association with South Thompson River to Thompson River
50 ° 40 ′ 59 ″  N , 120 ° 20 ′ 30 ″  W

length 338 km
Catchment area 20,700 km²
Discharge at the McLure
A Eo gauge : 19,600 km²
Location: 47 km above the estuary 		MQ 1959/2015
Mq 1959/2015
 		429 m³ / s
21.9 l / (s km²)
Right tributaries Blue River , Clearwater River
South Thompson River
River system Fraser River
Drain over Thompson River → Fraser River
origin Little Shuswap Lake
50 ° 49 ′ 43 "  N , 119 ° 41 ′ 50"  W.
Association with North Thompson River to Thompson River
50 ° 40 ′ 59 ″  N , 120 ° 19 ′ 59 ″  W

length 332 km (to the source of the Shuswap River)
Catchment area 17,800 km²
Discharge at the Monte Creek
A Eo gauge : 16,600 km²
Location: 29 km above the mouth 		MQ 1959/1970
Mq 1959/1970
 		299 m³ / s
18 l / (s km²)

Web links

Commons : Thompson River  - collection of images, videos, and audio files

Individual evidence

  1. ↑ a b c d e f g h The Atlas of Canada - Rivers
  2. ^ Government of Canada: Historical Hydrometric Data Search Results: Station 08LF051
  3. ^ Government of Canada: Historical Hydrometric Data Search Results: Station 08LB064
  4. ^ Government of Canada: Historical Hydrometric Data Search Results: Station 08LE069