Lake Winnipegosis

Lake Winnipegosis is a large (5,370 km) lake in central North America, in Manitoba, Canada, some 300 km northwest of Winnipeg. It is Canada's eleventh-largest lake.

The lake's name derives from that of Lake Winnipeg, with a diminutive suffix. Winnipeg means 'big muddy waters' and Winnipegosis means 'little muddy waters'., both characterized by coastal wetlands.

It appears as Winipgassish on the Fidler map of 1820, while modern spelling dates from as early as 1811.