Rivière à Mars

Rivière à Mars
Location
CountryCanada
ProvinceQuebec
RegionCapitale-Nationale and Saguenay-Lac-Saint-Jean
Regional County MunicipalityCharlevoix Regional County Municipality, Le Fjord-du-Saguenay Regional County Municipality
Unorganized territory, municipality and cityLac-Pikauba, Saguenay (city)
Physical characteristics
SourceLittle unidentified lake
  locationLac-Pikauba
  coordinates47°44′42″N 70°57′45″W / 47.74512°N 70.962582°W / 47.74512; -70.962582
  elevation869 m (2,851 ft)
MouthSaguenay River
  location
Saguenay (ville)
  coordinates
48°20′09″N 70°52′47″W / 48.33583°N 70.87972°W / 48.33583; -70.87972
  elevation
72 m (236 ft)
Length104.1 km (64.7 mi)
Discharge 
  locationSaguenay (city)
Basin features
Tributaries 
  left(from the mouth) Ruisseau Bluteau, ruisseau Rouge, outlet of lac Gravel, outlet of lac Donald, La Grosse Décharge, discharge of a set of lakes such "lac Isaïe", discharge of "Lac du Portage", bras d'Isaïe, discharge of "lac De Léry", bras de l'Enfer, coulée des Larmes, rivière à Mars North-West, discharge of lac Dun, ruisseau au Goéland, ruisseau non identifié.
  right(from the mouth) "Décharge à Paul-Dufour", "décharge du lac Côme", bras du Coco, "décharge du Petit lac Castule" and "du Grand lac Castule", "décharge du lac Vert", outlet of some unidentified lakes, outlet of lac Girard, outlet of lac Colon, outlet of lac Stymphale, outlet of lac Dusette.

The Rivière à Mars is a tributary of the Baie des Ha! Ha! Crossing the borough La Baie, in Saguenay (city), in the administrative region of Saguenay–Lac-Saint-Jean, in Quebec, in Canada. The "rivière à Mars" is a tributary of the Saguenay River and has its source in the Laurentides Wildlife Reserve. This river to salmons was badly affected by the Saguenay Flood which occurred from July 19 to 21, 1996.

From the mouth of the river, the "rivière à Mars" valley is served by the route 381 which cuts the river at La Baie, "chemin des Chutes" (north shore) and "Chemin Saint-Louis" (south shore), as well as by rail. Upstream, this valley is served by the Consol Paper road and a few other secondary forest roads for forestry and recreational tourism activities.

Forestry is the main economic activity in this valley; industrial and port activities, second; recreational tourism activities, third.

The surface of the Mars river is usually frozen from the beginning of December to the end of March, however the safe circulation on the ice is generally done from mid-December to mid-March.