Yamaska River

Geobox River
name = Yamaska River
native_name = Rivière Yamaska
other_name =
other_name1 =


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country = flagicon|Canada Canada
country1 =
state_type = Province
state = flagicon|Quebec Quebec
state1 =
region = Montérégie
region1 =
Centre-du-Québec
region2 =
district =
district1 =
city = Saint-Hyacinthe
city1 =
city2 =
city3 =
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city5 =
city6 =
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length = 160
watershed = 4784
discharge_location = Lac Saint-Pierre
discharge_average = 83
discharge_max =
discharge_min =
discharge1_location =
discharge1_average =
source_name = Lac Brome
source_location = Lac-Brome
source_district =
source_region = Montérégie
source_state =
Quebec
source_country = Canada
source_lat_d = 45
source_lat_m = 15
source_lat_s =
source_lat_NS = N
source_long_d = 72
source_long_m = 31
source_long_s =
source_long_EW = W
source_elevation = 194
source_length = 6
mouth_name =
mouth_location = Saint-François-du-Lac
mouth_district =
mouth_region =
Centre-du-Québec
mouth_state =
Quebec
mouth_country = Canada
mouth_lat_d = 46
mouth_lat_m = 06
mouth_lat_s = 50
mouth_lat_NS = N
mouth_long_d = 72
mouth_long_m = 56
mouth_long_s = 13
mouth_long_EW = W
mouth_elevation =
tributary_left =
tributary_left1 =
tributary_right =
tributary_right1 =
free_name =
free_value =


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The Yamaska River is a river in southern Quebec, Canada. Its name comes from the Abenaki language meaning "where rushes grow", referring to the marsh at river's mouth (Lavallière Bay).

Its source is the Sutton Mountains region of the Eastern Townships of Quebec. It flows north-west to Farnham and from there north to the Saint Lawrence River at Sorel-Tracy. Altogether it is 177 km (110 mile) long with a drainage basin of 4784 square kilometres.

Among its main tributaries are the Centre Yamaska and North Yamaska Rivers.