The lac Sirois (English: Lake Sirois) is a freshwater body from the watershed of the Mauvaise River, in the territory of the town of Saint-Raymond, in the Portneuf Regional County Municipality, in the administrative region of Capitale-Nationale, in the province of Quebec, in Canada.[1]
| Sirois Lake | |
|---|---|
  Sirois Lake Location in Quebec | |
| Location | Saint-Raymond, Portneuf Regional County Municipality, Capitale-Nationale |
| Coordinates | 46°59′56″N 71°53′39″W / 46.99889°N 71.89417°W |
| Lake type | Natural |
| Primary outflows | Mauvaise River |
| Basin countries | Canada |
| Max. length | 2.4 km (1.5 mi) |
| Max. width | 0.39 km (0.24 mi) |
| Surface elevation | 475 m (1,558 ft) |
The area around the lake is served by secondary forest roads.[2] Forestry is the main economic activity in the sector; recreational tourism, second.[3]
The surface of Lake Sirois is usually frozen from the beginning of December to the end of March, however the safe circulation on the ice is generally made from mid-December to mid-March.
Geography
editThe main watersheds near Lake Sirois are:
- north side: Lac du Milieu, Bras du Nord, Delaney stream;
- east side: Bras du Nord;
- south side: Mauvaise River, lake Dubut;
- west side: Mauvaise river, lac des Soixante Arpents.[3]
Lac Sirois has three parts which are respectively separated by peninsulas attached to the east shore of the lake:
- the main part (length of 1.4 kilometres (0.87 mi)) located on the north side, which receives on the east side the outlet of Lac Mai and Lac du Milieu;
- the central part (length of 0.4 kilometres (0.25 mi)) without any tributary;
- the southern part (length of 0.5 kilometres (0.31 mi)) which receives the discharge (coming from the northeast) of Sec Lake.[3]
The mouth of Lac Sirois is located northeast of the lake, either:
- 3.7 kilometres (2.3 mi) north of the confluence of the outlet of Lake Sirois and the Bad River;
- 8.4 kilometres (5.2 mi) north-west of the confluence of the Bad river and the Bras du Nord;
- 14.6 kilometres (9.1 mi) north-west of the confluence of the Bras du Nord and the Sainte-Anne River;
- 13.6 kilometres (8.5 mi) north of the village center of Saint-Léonard-de-Portneuf.[3]
From the mouth of Lake Sirois, the current drops consecutively on:
- 5.3 kilometres (3.3 mi) the outlet of Lake Sirois, first towards the west, then the south in particular by crossing Lake Joachim;
- 12.8 kilometres (8.0 mi) towards the south-east, the course of the Mauvaise River;
- 11.7 kilometres (7.3 mi) generally towards the south the course of the Bras du Nord;
- 76.0 kilometres (47.2 mi) generally south, the course of the Sainte-Anne River.[3]
Toponymy
editThe term "Sirois" is a family name of French origin.
The toponym "Lac Sirois" was formalized on December 5, 1968, by the Commission de toponymie du Québec.[1]
See also
edit
References
edit- ^ a b Commission de toponymie du Québec - lac Sirois
- ^ Open Street Map - Accessed February 8, 2019
- ^ a b c d e "Atlas du Canada du Ministère des ressources naturelles du Canada | Characteristics extracted from the geographic map, the database and the instrumentation of the site". Retrieved 8 February 2020.