Rivière du Sud-Ouest (Yamaska River tributary)

Rivière du Sud-Ouest
Location
CountryCanada
ProvinceQuebec
RegionMontérégie
Regional County MunicipalityLe Haut-Richelieu Regional County Municipality, Brome-Missisquoi Regional County Municipality et Rouville Regional County Municipality
Physical characteristics
SourceVarious agricultural streams
  locationFarham
  coordinates45°23′34″N 73°00′17″W / 45.39278°N 73.00472°W / 45.39278; -73.00472
  elevation53 m (174 ft)
MouthSaint Lawrence River
  location
Saint-Césaire
  coordinates
45°23′34″N 73°00′17″W / 45.39278°N 73.00472°W / 45.39278; -73.00472
  elevation
30 m (98 ft)
Length17.7 km (11.0 mi)
Basin features
Tributaries 
  left(Upstream) Beaudry stream, Létourneau-Beaudoin stream, Martel stream, Pierre-Lalanne stream.
  right(Upstream) Écossais River, Patenaud-Robert outlet, Cirque stream, Thimothé-Martel-Giroux stream, Louis-Boulais stream, Fronteau stream.

The Rivière du Sud-Ouest (French pronunciation: [ʁivjɛʁ dy syd wɛst], "River of the South-West") is a tributary of the Yamaska River. It flows in the administrative region of Montérégie, on the South Shore of the St. Lawrence River, in Quebec, Canada. Its course towards the northeast crosses the municipalities of: