| La Grosse Décharge | |
| Pushpin Map: | Quebec |
| Subdivision Type1: | Country |
| Subdivision Name1: | Canada |
| Subdivision Type2: | Province |
| Subdivision Name2: | Quebec |
| Subdivision Type3: | Region |
| Subdivision Type4: | Regional County Municipality |
| Subdivision Name4: | Le Fjord-du-Saguenay Regional County Municipality |
| Subdivision Type5: | Unorganized territory |
| Subdivision Name5: | Lac-Ministuk |
| Length: | 9.8km (06.1miles)[1] |
| Discharge1 Location: | Lac-Ministuk |
| Source1: | Lac de la Grosse Décharge |
| Source1 Location: | Lac-Ministuk |
| Source1 Coordinates: | 48.2733°N -71.0808°W |
| Source1 Elevation: | 239m (784feet) |
| Mouth: | Rivière à Mars |
| Mouth Location: | Lac-Ministuk |
| Mouth Coordinates: | 48.2758°N -70.9739°W |
| Mouth Elevation: | 170m (560feet) |
| Tributaries Left: | (from the mouth) Discharge of "lac aux Bleuets", discharge of lac Hamel. |
| Tributaries Right: | (from the mouth) La Petite Décharge, discharge of lac Xavier. |
La Grosse Décharge is a tributary of the rivière à Mars, flowing in the unorganized territory of Lac-Ministuk, in the Le Fjord-du-Saguenay Regional County Municipality, in the administrative region of Saguenay–Lac-Saint-Jean, in the province of Quebec, in Canada. The course of "La Grosse Décharge" crosses the northern part of the zec Mars-Moulin.
This small valley is served by the "Chemin de la Consol Paper" and the "Chemin des Lac des Maltais". A few other secondary forest roads serve the "La Grosse Décharge" valley, mainly for forestry and recreational tourism activities.[2]
Forestry is the main economic activity in this valley; recreational tourism, second.
The surface of "La Grosse Décharge" 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.
The main neighboring watersheds of La Grosse Décharge are:
The "La Grosse Décharge" rises at the mouth of the "Lac de la Grosse Décharge" (length: 0.6km (00.4miles); altitude: 239m (784feet)). This lake has a marsh area on the east side. The mouth of this lake is located at:
From its source, "La Grosse Décharge" flows over 9.8km (06.1miles) with a drop of 69m (226feet) entirely in the forest zone, according to the following segments:
The Grosse Décharge pours on the west bank of the rivière à Mars. This confluence is located at:
From the confluence of "La Grosse Décharge" with the rivière à Mars, the current follows the course of the rivière à Mars on 14.5km (09miles) towards the northwest then towards the northeast, crosses the bay Ha! Ha! on 11km (07miles) towards the northeast, then the course of the Saguenay River on 99.5km (61.8miles) towards the east until Tadoussac where it merges with the Saint Lawrence Estuary.[3]
The toponym "La Grosse Décharge" was formalized on December 5, 1968, at the Place Names Bank of the Commission de toponymie du Québec.[4]