Slave
Related Category: Canadian Physical Geography
river, c.310 mi (500 km) long, Northwest Territories, Canada. It comprises the middle sections of the
Mackenzie River system. The river channels the waters of Lake Athabasca and the Peace River into
Great Slave Lake at Fort Resolution. It is navigable for steamers except for the rapids between Fort Fitzgerald and Fort Smith, where it breaks through the Cariboo Hills. There is a wagon road portage (16 mi/26 km long) around the rapids.