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United States and Canada · Great Lakes region

Lake Superior

A cold, deep inland sea that holds a major share of North America’s freshwater story.

North AmericaCanadaUnited StatesFreshwater · glacial Great Lake

Why this lake matters

An inland sea at the top of the Great Lakes

Lake Superior is not just a large lake. It behaves like an inland freshwater sea: cold, deep, storm-shaped, and powerful enough to influence weather, shoreline ecosystems, shipping history, and regional culture. It borders Minnesota, Wisconsin, Michigan, and Ontario, then sends water toward Lake Huron through the St. Marys River.

What makes Lake Superior educational

Lake Superior is a clean example of how size, depth, temperature, geology, and watershed shape a lake. Its great volume gives it a long retention time, meaning water remains in the lake for many decades before flowing out. Its cold, nutrient-poor water helps explain the lake’s clarity and its cold-water fish habitat.

Why people remember it

Superior feels more like a northern ocean than a typical inland lake. It has cliffed shorelines, forested islands, powerful storms, historic shipping routes, shipwreck stories, and protected public shorelines. For LakesOnEarth, it is a model landmark profile because it combines science, maps, history, recreation, beauty, and strong public sources.

Lake media overview

Lake-specific visual checks

A finished lake profile needs lake-relevant media, useful map context, source notes, and any fishing information tied to the exact lake.

Lake-specific media

Profile image

A lake-specific visual should match the actual lake instead of repeating a generic lake placeholder.

Map context

Map context

Map context should stay connected to the exact lake profile and help visitors understand the surrounding region.

Fishing notes

Fishing notes

Fishing notes should list species for this lake only and remind visitors to verify current local regulations.

Trust trail

Sources and image trail

Source cards explain where facts, images, and guide visuals came from before the profile is treated as complete.

Fishing notes

Top game species for this lake

  • Lake trout
  • Coho salmon
  • Chinook salmon
  • Steelhead / rainbow trout
  • Brown trout
  • Walleye

These species are listed to orient visitors. Fishing rules, seasons, harvest limits, and local access can change; always check current local regulations before fishing.

Map context

Community review

Share lake knowledge or photos

Use one place to add local knowledge, corrections, memories, field notes, or lake photos. Everything is reviewed before it becomes part of the public atlas.

Add lake knowledge

Share corrections, local observations, history, fishing or recreation notes, water-level observations, wildlife sightings, or useful context about this specific lake. Comments are moderated before publication.

Upload a lake photo

Send a photo, caption, or location note for review. Approved images can be added to this lake page with attribution.

Trust trail

Sources and image credit

Every lake profile should show where its facts and media came from.

U.S. Environmental Protection Agency — Lake Superior

Used for water area, depth, volume, retention time, shoreline context, and environmental overview.

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NOAA National Marine Ecosystem Status — Lake Superior

Used for Great Lakes ranking, depth context, population context, and outflow reference.

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NASA / Wikimedia Commons

Public domain NASA image; review NASA trademark/insignia restrictions separately when using NASA marks.

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