Thompson River
Location
CountryCanada
ProvinceQuebec
RegionAbitibi-Témiscamingue
MRCLa Vallée-de-l'Or Regional County Municipality
Physical characteristics
SourceLemoine Lake
  locationVal-d'Or
  coordinates48°03′56″N 77°52′34″W / 48.06556°N 77.87611°W / 48.06556; -77.87611
  elevation296 m (971 ft)
MouthDe Montigny Lake
  location
Val-d'Or
  coordinates
48°05′14″N 77°52′41″W / 48.08722°N 77.87806°W / 48.08722; -77.87806
  elevation
294 m (965 ft)
Length4.9 km (3.0 mi)
Basin features
Tributaries 
  left(upstream)
  right(upstream)

The Thompson River is a tributary of the south shore of De Montigny Lake, flowing in the town of Val-d'Or, in the La Vallée-de-l'Or Regional County Municipality, in the administrative region of Abitibi-Témiscamingue, in Quebec, in Canada.

Recreational tourism is the sector's primary economic activity, including pleasure boating on De Montigny lakes, Blouin and Lemoine Lake. This strait includes a marina.[1] (at south of the strait) and a seaplane base (in the middle of the strait). In addition, a railway bridge and a road bridge cross this strait which is located on the west side of the city of Val-d'Or.[2]

The surface of the Thompson River is generally frozen from mid-December to mid-April.

Geography

The neighboring watersheds of the Thompson River are:

  • north side: Harricana River, Lac De Montigny, Milky River;
  • east side: Sabourin Lake, Marrias River, Sabourin River;
  • south side: Lemoine lake, Mourier Lake;
  • west side: Piché River, Fournière Lake.[2]

The source of the Thompson River is located at the mouth of Lemoine Lake (Val-d'Or) which is mainly fed by a strait (from the southwest) connecting it to Mourier Lake.

From its source, the Thompson River flows 4.9 km (3.0 mi) northward forming a navigable strait and collects the waters of the Piché River (coming from the west).[2]

The Thompson River flows on the south shore of Lac De Montigny to:

  • 20.2 km (12.6 mi) south-east of the outlet of the Harricana River in Malartic Lake;
  • 7.8 km (4.8 mi) south of the mouth of Lac De Montigny;
  • 5.8 km (3.6 mi) west of downtown Val-d'Or;
  • 10.2 km (6.3 mi) north-east of Lac Fournière;
  • 1.8 km (1.1 mi) north of the hamlet of Rivière-Thompson.[2]

Toponymy

The toponym Thompson river was formalized on December 21, 1982 at the Commission de toponymie du Québec.[3]

See also

Notes and references

  1. Marina Thompson de Val-d'Or
  2. 1 2 3 4 "Atlas of Canada by the Department of Natural Resources Canada". Retrieved 12 July 2020. Characteristics extracted from the geographic map, database and instrumentation of the site
  3. Commission de toponymie du Québec - Rivière Thompson
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