1911 Encyclopædia Britannica/Winnipegosis

WINNIPEGOSIS, a lake of Manitoba and Saskatchewan, Canada, between 51° 34′ and 53° 11′ N. and 99° 37′ and 101° 06′ W. Its greatest length is 122 m., greatest width 17 m.; shoreline 570 m., and area, exclusive of islands, 2000 sq. m. Its greatest ascertained depth is 38 ft., and mean altitude 828 ft. above the sea. Mossy river from the south, draining Lake Dauphin, Swan, and Red Deer rivers are the only considerable streams that fall into it. It drains by the Waterhen river through Waterhen lake into Lake Manitoba, and thence by the Little Saskatchewan into Lake Winnipeg. It was discovered by the chevalier de la Verendrye in 1739.