What is the most pristine Great Lake?

The greatest of the Great Lakes is Lake Superior, the northernmost and westernmost Great Lake — and the biggest, the deepest, the coldest and the most pristine.



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Lake Superior is the world's largest freshwater lake by area (31,700 mi2 /82,100 km2). It is also the coldest and deepest of the Great Lakes, with a maximum depth of 406 meters (1,332 feet). By most measures, it is the healthiest of all the Great Lakes.

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The pollution process was exacerbated by water flowing into the lake from various industrial cities. Detroit was home to factories that dumped acids, iron and oil wastes into the river that flowed into Lake Erie at its Western end. Runoffs from Cleveland farms carried wastes into the lake from its Southern end.

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Currents in Lake Erie can be dangerous! Any current flowing faster than 2 mph is considered dangerous. Dangerous currents can exceed 5 mph — faster than an Olympic swimmer can swim.

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as the warmest Great Lake, the average water temperature on Lake Erie is almost 76 degrees.

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According to the analysis, Lake Superior and Lake Huron were given “good” grades for ecosystems. Lake Michigan and Lake Ontario are considered “fair,” while Lake Erie's ecosystem is considered “poor.”

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Lake Michigan's riptide and longshore tides are unparalleled when it comes to danger among all the Great Lakes. In fact, due to its unnaturally strong winds, it's not unusual for this lake to have strong rip currents that can be dangerous for swimmers.

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11 Most Beautiful Beaches In The Great Lakes
  • Saugatuck, Michigan (Lake Michigan) ...
  • Long Point Provincial Park, Ontario (Lake Erie) ...
  • Beach Park/Illinois Beach State Park, Illinois (Lake Michigan) ...
  • Port Stanley, Ontario (Lake Erie) ...
  • Indiana Dunes National Lakeshore, Indiana (Lake Michigan) ...
  • Marathon, Ontario (Lake Superior)


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Lake Superior is the largest of the Great Lakes by surface area and volume. It is like a mini-freshwater ocean, you can't even see the other side from the Wisconsin shoreline.

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Lake Michigan in particular is the roughest of the Great Lakes, and poses a major risk to those thinking of taking a dip.

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Lake Erie is a bastion of beach glass. A couple of reasons for the multitude of glass here: -- Lake Erie has more than 2,000 shipwrecks, all of which cold have been carrying ceramic dishes and glasses, not to mention marbles in the ballast. -- For decades, Cleveland dumped its trash in the lake.

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Lake Superior is the world's largest freshwater lake by area (31,700 mi2 /82,100 km2). It is also the coldest and deepest of the Great Lakes, with a maximum depth of 406 meters (1,332 feet).

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Everything You Need to Know About the Lake Mead Drought Water levels have been steadily declining since 2000, leading to the current drought of the popular Lake Mead. In June of 2022, Lake Mead faced a unique situation. Many people were trying to access the lake beyond the usual holiday crowds.

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The clean, clear waters of Lake Superior are beautiful and inviting, though the water is typically cold even for the hardiest swimmers. Shoreline water temperatures in summer usually range from the upper 50s to the upper 60s. Some years it can reach 70 degrees by mid-August in Munising Bay.

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Lake Michigan is generally clean and safe for swimming but it can become contaminated with harmful bacteria.

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The first recorded swimmer to cross Lake Erie was Pennsylvania teenager Pat Budney in 1975. He swam from Long Point to Presque Isle in Pennsylvania, a distance of 26 miles that took him 26 ½ hours. The state park beach where he finished now bears his name.

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Lake Erie has an astonishing 2,000-plus shipwrecks which is among the highest concentration of shipwrecks in the world. Only about 400 of Lake Erie's wrecks have ever been found. There are schooners, freighters, steamships, tugs and fishing boats among them.

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The blue in Lake Michigan and Lake Huron is sediment brought to the surface when strong winds churned the lakes. The green in Lake Erie and in Lake Huron's Saginaw Bay is algae, which builds on the surface when winds are calm.

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Lake Erie occupies a basin that was carved out of Earth's crust over millions of years by rivers and glaciers. The oldest rocks from which the basin was carved are about 400 million years old and formed in a tropical ocean reef environment.

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