Ottawa Valley

The Ottawa Valley is the valley surrounding the Ottawa River for the west-east portion of its path through the Canadian Shield from Mattawa to Hawkesbury. Because of the surrounding shield, the valley is narrow at its western end, then becomes increasingly wide (mainly on the southern Ontario side of the river) as it progresses eastward. Approximately 1.3 million people reside in the valley (and along its tributaries), of these the majority, around 80% reside in Ottawa, the remainder on the north side of the Ottawa river, in Quebec. The  National Capital Region area has just over 1.1 million inhabitants in both provinces.
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