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  1. Ottawa River - Wikipedia

    It is named after the Algonquin word "to trade", as it was the major trade route of Eastern Canada at the time. For most of its length, it defines the border between these two provinces. It is a …

  2. Ottawa River | Map, Tributaries, & Facts | Britannica

    Oct 17, 2025 · Overview of the Ottawa River, the chief tributary of the St. Lawrence River, located in east-central Canada.

  3. Ottawa River - The Canadian Encyclopedia

    Dec 20, 2006 · The Ottawa River is Canada’s eighth largest river and the chief tributary of the St. Lawrence. Beginning in the Laurentian Mountains, it flows west before turning southeast to …

  4. Ottawa River, Ontario | Canadian Heritage Rivers System

    The river flows through rural areas and small towns in the Upper and Lower Ottawa Valleys, and passes through the urban setting of Ottawa, Ontario. Though tamed by multiple hydroelectric …

  5. The Historic Ottawa River

    A bird s-eye-view of the Ottawa Valley illustrates its most important natural feature the Ottawa River.

  6. The Ottawa River

    Fortunately, almost all of the Ottawa River lies open to pedestrians, cyclists and paddlers. Multi-use pathways line both shorelines through the urban core, with numerous lookouts and …

  7. Ottawa River Waterway

    The Ottawa River is one of the great historic and most attractive rivers of North America. First-Nation Peoples had been living along the river for 6,000 years when the first Europeans …

  8. Ottawa River Explained

    The Ottawa River (fr|Rivière des Outaouais, Algonquin: Kichi-Sìbì/Kitchissippi) is a river in the Canadian provinces of Ontario and Quebec. It is named after the Algonquin word 'to trade', as …

  9. Watershed Facts - Ottawa Riverkeeper | Garde-rivière des ...

    Curious to learn more about the Ottawa River watershed? Find fast facts about the river here.

  10. Ottawa River - Academic Dictionaries and Encyclopedias

    Ottawa River — River, eastern central Canada, the chief tributary of the St. Lawrence River. It rises in the Laurentian plateau of western Quebec and flows west to form the Quebec Ontario …