Saint-Cyr River (Ottawa River tributary)

Saint-Cyr
Watershed of Ottawa River
Location
CountryCanada
ProvinceQuebec
RegionOutaouais
Physical characteristics
SourceLa Truite Lake
  locationRapides-des-Joachims, Quebec, Pontiac Regional County Municipality (RCM), Outaouais, Quebec
  coordinates46°20′23″N 77°36′23″W / 46.33972°N 77.60639°W / 46.33972; -77.60639
  elevation362 m (1,188 ft)
MouthOttawa River
  location
Sheenboro, Quebec, Pontiac Regional County Municipality (RCM), Outaouais, Quebec
  coordinates
46°10′55″N 77°37′40″W / 46.18194°N 77.62778°W / 46.18194; -77.62778
  elevation
120 m (390 ft)
Length25.0 km (15.5 mi)
Basin features
Tributaries 
  left
  • (upstream)
  • Boom River

The Saint-Cyr River /ˌsntˈsɪər/ is a tributary of the eastern shore of the Ottawa River. The Saint-Cyr River flows into the Municipality Rapides-des-Joachims, then from Sheenboro into the Regional County Municipality (MRC) Pontiac Regional County Municipality, in Outaouais administrative region, in Quebec, in Canada.