Lake, south-central Manitoba, Canada.
Fed by many rivers, including the Saskatchewan , Red River of the North , and Winnipeg , it is drained to the northeast by the Nelson River . It is 264 mi (425 km) long, up to 68 mi (109 km) wide, and has an area of 9,416 sq mi (24,387 sq km). The Canadian explorer Pierre La Verendrye visited the lake in 1733. With an average depth of 50 ft (15 m), it is important for shipping, commercial fishing, and recreation.