Lake Superior the largest freshwater lake in the world by surface area is deep enough to submerge most of New York’s iconic Empire State Building. At its deepest point the lake reaches approximately 1,332 feet meaning the building roof would sit 82 feet underwater while the top 122 feet of its antenna would remain above the surface.
The comparison offers a striking way to understand the lake’s depth which is difficult to visualise using measurements alone.
The Empire State Building stands 1,250 feet tall to its roof and reaches 1,454 feet when its antenna is included. Lake Superior’s deepest point therefore extends beyond the building’s roof height but falls short of its total height.
The deepest section lies in the lake’s eastern basin, approximately 40 miles north of Munising, Michigan. The lake floor varies considerably across the region. Areas near Duluth, Minnesota and the Apostle Islands are much shallower with depths generally ranging from 200 to 600 feet.
At Lake Superior’s average depth of around 483 feet, the water would reach approximately the 39th floor of the 102 storey Empire State Building. This means most of the structure would remain above water in an area of average depth.
The building’s famous observation decks would be submerged at the lake deepest point. The 86th floor observatory located around 1,050 feet above the building’s base, would lie approximately 282 feet underwater. The roof level observation area would be around 82 feet below the surface.
Lake Superior’s depth also creates an unusual geographical feature. Its surface sits approximately 600 feet above sea level, while its deepest lakebed reaches roughly 733 feet below sea level. This makes the lakebed lower than Death Valley, whose lowest point lies about 282 feet below sea level.
However, Lake Superior is not the deepest lake in the United States. Oregon’s Crater Lake reaches approximately 1,949 feet in depth. Despite being considerably deeper, its lakebed remains well above sea level because the lake sits high in the Cascade Mountains.
Lake Superior’s importance extends beyond its depth. It contains approximately 2,900 cubic miles of water and covers about 31,700 square miles, making it the world’s largest freshwater lake by surface area. Its enormous volume also makes it a major component of the Great Lakes system.
Despite its size, the lake offers limited underwater visibility compared with its total depth. Average visibility is around 27 feet, although it can reach approximately 100 feet under favourable conditions. Even in exceptionally clear water, only a small fraction of the lake’s deepest waters would be visible from the surface.
The Empire State Building comparison makes Lake Superior’s scale easier to grasp. At its deepest point, the lake could submerge nearly the entire building, leaving only part of its antenna above water. At its average depth, however, the water would reach roughly the 39th floor.
These measurements highlight the remarkable depth and volume of Lake Superior whose underwater landscape extends far below sea level.