Thompson River (Clark Fork)

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Thompson River
Data
Water code US :  792103
location Montana (USA)
River system Columbia River
Drain over Clark Fork  → Pend Oreille River  → Columbia River  → Pacific Ocean
origin Lower Thompson Lake
48 ° 0 ′ 51 "  N , 115 ° 1 ′ 28"  W.
Source height 1016  m
muzzle Clark Fork Coordinates: 47 ° 34 ′ 37 "  N , 115 ° 14 ′ 25"  W 47 ° 34 ′ 37 "  N , 115 ° 14 ′ 25"  W.
Mouth height 730  m
Height difference 286 m
Bottom slope approx. 4.1 ‰
length approx. 70 km
Catchment area 1652 km²
Discharge
A Eo : 1652 km²
Location: 1.8 km above the mouth 		MQ 1957/2017
Mq 1957/2017
 		12.3 m³ / s
7.4 l / (s km²)
Right tributaries Fishtrap Creek
Location of the Thompson River in the Pend Oreille River basin

Location of the Thompson River in the Pend Oreille River basin

The Thompson River is an approximately 70 km long right tributary of the Clark Fork in the northwest of the US state Montana . The river was named after the Canadian cartographer David Thompson .

River course

The Thompson River forms the outflow of the 1,016  m high Lower Thompson Lake . It flows mainly south through Sanders County . Initially, he briefly crossed the border with Flathead County to the east . The Thompson River forms the eastern boundary of the Cabinet Mountains . In the lower reaches the river crosses the Lolo National Forest . The Thompson River finally flows 8 km east of the small town of Thompson Falls into the Clark Fork. The Montana Highway 200 crosses the river just above its mouth.

Hydrology

The Thompson River drains an area of ​​1,652 km². The mean discharge is 12.3 m³ / s. The highest monthly discharge occurs in May with an average of 36 m³ / s.

Web links

Individual evidence

  1. ^ Lower Thompson Lake in the Geographic Names Information System of the United States Geological Survey
  2. ↑ Thompson River in the United States Geological Survey's Geographic Names Information System
  3. ↑ a b c USGS 12389500 Thompson River near Thompson Falls MT