Lake Superior: North America's largest freshwater lake
Lake Superior is the largest freshwater lake by surface area, straddling Canada and the United States; this article covers its geography, ecology, human use, and cultural and historical significance.
Overview
Lake Superior is the largest freshwater lake in the world by surface area and one of the Earth’s major inland seas. It lies along the international border between Canada and the United States. Indigenous peoples have long known and named the lake; the Ojibwe call it Gitchigume, a term often translated as "great water" or "big sea." The lake drains eastward via the St. Marys River into Lake Huron, forming an important link in the Great Lakes system.
Image gallery
10 Images
Geography and physical features
Superior sits between the Canadian province of Ontario and the U.S. states of Minnesota, Wisconsin and Michigan. Its shoreline alternates between rocky cliffs, pebble beaches and forested headlands. The lake is unusually cold and deep for its latitude, with large open-water areas that moderate regional climate. Its primary outflow is the St. Marys River, and human-built structures such as the Great Lakes navigation system and the Soo Locks permit ships to move between Superior and the downstream lakes for commercial shipping.
Ecology and wildlife
Lake Superior supports a diverse aquatic ecosystem. More than eighty fish species inhabit its cold, oxygen-rich waters. Native and important species include lake trout and whitefish; other common species include walleye and various others, and some salmon species have been introduced. The lake faces ecological pressures from invasive species and changing conditions that affect fisheries and coastal habitats.
- Representative fish: lake trout, whitefish, walleye, introduced salmon.
- Threats: invasive species and pollution impacting food webs and shoreline habitat.
Human history and uses
For millennia the lake has been central to the lives of Indigenous peoples such as the Ojibwe. European exploration and settlement in the region grew around fur trade routes, mining and later large-scale industrial shipping. The lake carries bulk commodities—timber, iron ore and grain—through the Soo Locks and the wider Great Lakes shipping corridor. Recreation, including fishing, boating and shoreline tourism, is also important to local economies.
Climate, hazards and notable facts
Lake Superior’s weather can change rapidly: strong winds and sudden storms have long posed hazards to mariners, contributing to a history of notable shipwrecks and dramatic rescues. The lake’s cold temperatures and large fetch also influence lake-effect snowfall and local microclimates. Culturally and scientifically, Superior is significant for its scale and clarity, its glacial origins and its role in continental water circulation.
Where to learn more
Readers seeking further information can consult regional parks, university research programs and governmental lake-management agencies in both the United States and Canada. For general reference and regional guides, see resources about the lake’s geography and history at Canada, United States, and provincial and state pages linked to the region.
Additional practical and visitor information can be found through regional tourism and conservation organizations that describe access points, safety guidance and current ecological studies. For navigation and shipping history see materials related to the Soo Locks and the broader St. Marys River corridor.
Name
In the language of the Anishinabe (also Ojibwa or Chippewa Indians) the lake is called "Gichigami" ("big water"). It is further known as the "Gitche Gumee", as for example in Henry Wadsworth Longfellow's 1855 epic, The Song of Hiawatha and Gordon Lightfoot's ballad "The Wreck of the Edmund Fitzgerald", which is about the sinking of the Edmund Fitzgerald on Lake Superior in November 1975. The lake was named "le lac supérieur" (Lake Superior) by French explorers in the 17th century because it is located above Lake Huron.
History
Lake Superior was already an important transportation route for the native Indian population; the Pigeon River and the Kaministiquia River, two rivers that served as routes into the interior of what is now Canada, flow into it on the northwest shore. The first whites were French fur traders who were shown these connections by the Indians. The so-called Grand Portage on the Pigeon River was developed into a trading post, and the North West Company, founded by French traders in 1783, established a fortified camp there, where they moved their headquarters during the summer months. The reconstructed base is now designated as Grand Portage National Monument.
In the 19th century mining settlements developed around the lake, especially iron ore was mined and transported by ship across the lake. Today, Duluth is the inland port with the highest turnover in the United States; hard coal and iron ore are the most important goods.
Related articles
Author
AlegsaOnline.com Lake Superior: North America's largest freshwater lake Leandro Alegsa
URL: https://en.alegsaonline.com/art/55565