The Montreal River is a river in Timiskaming District, Ontario, Canada. It travels 220 kilometres from its source at Smoothwater Lake to its mouth at Lake Timiskaming on the Ottawa River. The river is a significant source of hydroelectricity.
Country: Canada
Province: Ontario
District: Timiskaming
Source: Smoothwater Lake
Mouth: Lake Timiskaming
Length: 220 km (140 mi)
Progression: Lake Timiskaming→ Ottawa River→ St. Lawrence River→ Gulf of St. Lawrence