Ottawa River

Ottawa River

A river, about 1,126 km (700 mi) long, rising in the Laurentian Plateau of southwest Quebec, Canada, and flowing west and southeast in a V-shaped course to the St. Lawrence River near Montreal. It was an important waterway for early fur traders and missionaries.

Thesaurus

Noun

1.

Ottawa river - a river in southeastern Canada that flows along the boundary between Quebec and Ontario to the Saint Lawrence River near Montreal Outaouais, Ottawa Canada - a nation in northern North America; the French were the first Europeans to settle in mainland Canada; "the border between the United States and Canada is the longest unguarded border in the world"