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Ottawa River drainage basin

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Ottawa sewer after a rainstorm.mp4

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Long-term hydrological dynamics of Canada’s largest watershed: The Mackenzie River Basin

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Only rain goes down the drain

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The Bonnechere River, ON, Canada

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River of Dreams - Red River Basin 2016

The Ottawa River drainage basin is the drainage basin in northern North America where surface water empties into the Ottawa River and adjoining waters. Spanning an area of about 146,300 km2 (56,500 sq mi), it is the 12th largest drainage basin in Canada, occupying the Canadian provinces of Ontario and Quebec. It accounts for about 11% of the total Saint Lawrence River drainage area.
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