Did you know? After the arrival of European settlers in North America, the first major industry of the Ottawa Valley was fur trading. The valley was part of the major cross-country route for French-Canadian Voyageurs, who would paddle canoes up the Ottawa River as far as Mattawa and then portage west through various rivers and lakes to Georgian Bay on Lake Huron. Later, lumber became the valley's major industry, and it is still important in the far western part where the valley is narrow and little farmland is available.