La Petite Décharge

La Petite Décharge is the name of one of the two emissaries of lac Saint-Jean, the other being the La Grande Décharge. This river flows south of Alma Island, on the northwest shore of St. Lawrence River, in the town of Alma, in the Lac-Saint-Jean-Est Regional County Municipality, in the administrative region of Saguenay-Lac-Saint-Jean, in the Province of Quebec, in Canada.

La Petite Décharge
Location
CountryCanada
ProvinceQuebec
RegionSaguenay-Lac-Saint-Jean
Regional County MunicipalityLe Fjord-du-Saguenay Regional County Municipality
CityAlma
Physical characteristics
SourceLac Saint-Jean
 ⁃ locationAlma
 ⁃ coordinates48.565113°N 71.759434°E / 48.565113; 71.759434
 ⁃ elevation101
MouthSaguenay River
 ⁃ location
Alma
 ⁃ coordinates
48.538936°N 71.616268°E / 48.538936; 71.616268
 ⁃ elevation
68 m (223 ft)
Length16.2 km (10.1 mi)
Discharge 
 ⁃ locationLarouche
Basin features
Tributaries 
 ⁃ left(from the mouth) Ruisseau Rouge, Bédard River.

La Petite Décharge marks the southern limit of Alma Island. To the east of this island, the two emissaries meet and form the Saguenay River at their confluence.

The main economic activities are urban (ie the city of Alma), industrial and recreational tourism.

La Petite Décharge is served on the north side by Mélançon-Ouest and Maurice boulevards. Paradis, as well as by the streets built on Alma Island; on the south side by Chemin du Golf, Scott Street West, Boulevard des Cascades, Rue Sacré-Coeur East and Boulevard Auger East.

The surface of La Petite Décharge is usually frozen from the end of November to the beginning of April, however the safe circulation on the ice is generally done from mid-December to the end of March.

Geography

With a length of 16.2 kilometers, the Petite Décharge is dotted with rapids all along its route.

The main watersheds neighboring the Petite Décharge are:

  • North side: La Grande Décharge, Rivière aux Chicots, Rivière aux Harts, Mistouk River;
  • East side: Saguenay River;
  • South side: Bédard River;
  • West side: lac Saint-Jean[1].

La Petite Décharge is the second emissary of lac Saint-Jean whose mouth is located in the town of Alma, at:

  • 11.0 km (6.8 mi) West of the mouth of La Petite Décharge;
  • 8.8 km (5.5 mi) West of downtown Alma[1] · [2].

From its source, the Little Landfill flows over 16.2 km (10.1 mi) in a forest, then an urban area, according to the following segments:

  • 3.2 km (2.0 mi) towards the East, then the North in a widening of the river, up to a bend of the river corresponding to the outlet of Lake Sophie (coming from the North);
  • 3.2 km (2.0 mi) towards the South-East, until the confluence of the Bédard River (Saguenay River) (coming from the South);
  • 7.6 km (4.7 mi) towards the east passing in the town of Alma passing under a first road bridge, under the railway bridge, a second road bridge, up to at the bridge at route 169;
  • 2.2 km (1.4 mi) to the east, crossing the Alma Hydrobase area to the mouth of the river.[1]

La Petite Décharge spills out at the eastern tip of Alma Island, coinciding with the confluence of La Grande Décharge (coming from the North-West). The latter is crossed to the east by the Saguenay River. This mouth is located at:

  • 2.1 km (1.3 mi) east of downtown Alma;
  • 4.4 km (2.7 mi) South-East of the Maligne Island hydroelectric plant;
  • 35.3 km (21.9 mi) West of downtown Saguenay (city);
  • 63.0 km (39.1 mi) West of the mouth of the Saguenay River[1].
  • Passerelle du centenaire
  • Les paliers de la Petite Décharge
  • Barrage sur la rivière la Petite-Décharge

Toponymy

This toponym is pointed out by the surveyor Edmond Duberger in a report of April 29, 1861 in Quebec, probably dates from the 18th century[3] · [4].

The toponym of "La Petite Décharge" was formalized on December 5, 1968 at the Place Names Bank of the Commission de toponymie du Québec[5].

Notes and references
  1. "Atlas of Canada from the Department of Natural Resources Canada - Characteristics extracted from the geographic map, the database and the instrumentation of the site". Retrieved 21 December 2019.
  2. JDMGÉO.COM - Province of Quebec - Maps of Quebec at scale 1: 250,000
  3. Book: Goudreau, Serge. "The Aboriginal presence in the land of Charlevoix", Revue d'histoire de Charlevoix, June 2012, p. 5.
  4. Tremblay, Victor. Alma au Lac Saint-Jean: son histoire, Chicoutimi, Centennial Edition, 1967, pages 9, 10.
  5. Commission de toponymie du Québec - Bank of Place Names - Toponym "La Grande Décharge".

Appendices

Bibliography
  • Template:The memory of Quebec
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