Which lake is the largest of the Great Lakes by volume?
Answer
Lake Superior
Answer
Lake Superior
Which lake is the largest of the Great Lakes by volume? Lake Superior.
Lake Superior is the largest of the Great Lakes by volume, containing about 2,900 cubic miles (12,100 cubic kilometres) of freshwater. It holds more water than the other four Great Lakes combined, although its enormous surface area can make its depth less obvious at a glance.
The lake's basin was shaped by repeated glaciation, which excavated deep rock troughs across the Canadian Shield. Superior reaches roughly 1,333 feet (406 metres) at its deepest point, and its average depth is about 483 feet. Water exits through the St. Marys River into Lake Huron, beginning the Great Lakes' route toward the Atlantic Ocean.
Surface area and volume produce different rankings. Superior is also the world's largest freshwater lake by surface area, but Lake Baikal and Lake Tanganyika contain more freshwater by volume because they are considerably deeper. Lake Huron has the second-largest Great Lakes volume, while Lake Michigan is second in depth among the Great Lakes but not in volume.
Source: Wikipedia · fact-checked Sept. 2026