Lake, western Manitoba, Canada.
Located west of Lake Winnipeg , it is a remnant of glacial Lake Agassiz. Numerous streams feed the 2,075-sq-mi (5,374-sq-km) lake, which drains southeastward into Lake Manitoba . It is more than 150 mi (240 km) long, up to 32 mi (51 km) wide, and has a maximum depth of 833 ft (254 m). It was explored in 1739 by Pierre La Verendrye and later served as part of a fur-trading route. It now is important for commercial fishing.