Rivière Noire Sud-Ouest

The main hydrographic slopes near the Black River are:

• North side: Noire River, Petit Saguenay River, rivière Noire du Milieu, Saguenay River;
• East side: Noire River, St. Lawrence River;
• South side: Port au Persil River, Port au Saumon River, Comporté River, Malbaie River, Jacob River;
• West side: American Creek, Castors Creek, Malbaie River, Snigole River.

The "rivière Noire Sud-Ouest" originates at the mouth of Julie Lake (length: 0.3 km (0.19 mi); altitude: 729 m (2,392 ft)). This source is located at:

• 14.7 km (9.1 mi) south-west of its mouth (confluence with Black River);
• 25.2 km (15.7 mi) south-west of the mouth of the Black River with the Gulf of St. Lawrence;
• 4.7 km (2.9 mi) southeast of the head lake of the Petit Saguenay River;
• 10.4 km (6.5 mi) north-east of the hamlet Mont-Grand-Fonds.

From its source (Lake Julie), the course of the "rivière Noire Sud-Ouest" descends on 27.9 km (17.3 mi) according to the following segments:

Upper South-West Black River (segment: 18.4 km (11.4 mi))

• 0.5 km (0.31 mi) south, crossing the Cure Lake (length: 0.5 km (0.31 mi); altitude: 728 m (2,388 ft)) on 0.4 km (0.25 mi) to its mouth;
• 3.6 km (2.2 mi) east to the Hydro-Québec high-voltage lines;
• 4.7 km (2.9 mi) northeasterly along the west side of a forest road and passing south-east of the hamlet "Les Jardins" to a creek (coming from the west);
• 1.1 km (0.68 mi) northeasterly to the forest road bridge;
• 3.4 km (2.1 mi) northeasterly, passing southeast of Lac au Plongeon, to the bridge of the forest road;
• 2.8 km (1.7 mi) northeasterly to a bend in the river;
• 2.3 km (1.4 mi) south-east approaching the foot of the Mountain at Meniche, to a bend of river;

Lower South-West Black River (segment: 9.5 km (5.9 mi))

• 1.9 km (1.2 mi) north to a creek (coming from the west);
• 4.5 km (2.8 mi) snaking north, collecting the discharge (coming from the southwest) of McLeod Lake and the discharge (coming from the west) of a set of small lakes, up to a stream (coming from the west);
• 3.1 km (1.9 mi) first forming a hook to the east, then successively to the north, to the west, and to the north where it descends from 100 m (330 ft) to its mouth.[4]

The mouth of the Black Southwest River empties onto the south shore of the Black River in Mont-Élie. This confluence is located at:

• 13.9 km (8.6 mi) east of the mouth of the Noire River with the Gulf of St. Lawrence;
• 30.6 km (19.0 mi) south of the Saguenay River;
• 15.25 km (9.48 mi) north of the hamlet Mont-Grand-Fonds.

The origin of the name "Rivière Noire Sud-Ouest" is derived from the name of the Noire River in which it flows.

The toponym "rivière Noire Sud-Ouest" was formalized on December 5, 1968 at the Bank of place names of the Commission de toponymie du Quebec.[2]

• Mont-Élie, an unorganized territory
• St. Lawrence River
• Noire River, a watercourse
• List of rivers of Quebec