Which Great Lake is the cleanest to swim in?

Watershed's surface: 209,000 square kms. Lake Superior is the largest, cleanest, and wildest of all the Great Lakes.



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Lake Michigan The Great Lakes are all water bodies that swimmers should think twice about entering. Lake Michigan in particular is the roughest of the Great Lakes, and poses a major risk to those thinking of taking a dip. This body of water is often named the most dangerous lake in the United States.

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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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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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Erie is the most southerly, shallow, and biologically diverse of all of the Great Lakes. Its shallow depth makes it the warmest Great Lake and a favourite destination for summer recreationists and migrating birds.

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Lake Erie is the fourth-largest lake in North America (by surface area) and the eleventh-largest worldwide. It is the Great Lakes' southernmost, shallowest, and smallest by volume. By the 1960s, Lake Erie had become the most polluted of the Great Lakes, owing to the substantial industrial presence along its coasts.

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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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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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Lake Huron, the second-largest of the Great Lakes, tops the list for its pristine turquoise waters, unparalleled shoreline sunrises, numerous lakeside parks, gorgeous beaches, and historic lighthouses. French explorers proclaimed it La Mer Douce, “the freshwater sea.” What's more, Lake Huron is home to 30,000 islands!

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The State of the Great Lakes 2022 Report by the Michigan Department of Environment, Great Lakes and Energy have analyzed and reported that Lake Superior and Lake Huron are rated as “good” ecosystems as Lake Michigan and Lake Ontario are rated “fair” and Lake Erie was ranked as “poor.”

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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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Yes, Lake Superior is safe for swimming. Lake Superior has the lowest drowning rate among all the Great Lakes. The statistics provided by the Great Lakes Surf Rescue Project support the safety of swimming in Lake Superior.

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The Great Lakes are more than capable of generating waves over 10 feet high, despite being smaller than our oceans. This lack in size actually increases the danger over the water. This is because the wave period in the Great Lakes (the time between two wave crests) is much shorter than in the ocean.

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Lake Superior's beaches are open and safe for swimming over 90% of the time, and the water is extremely clear, with an average underwater visibility of 8.3 m (27 ft).

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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 is the shallowest and warmest of the five Great Lakes, and the basin is also intensively developed with agriculture, urban areas, industries and sewage treatment plants. For decades, pollution filled Lake Erie with far more nutrients than the lake could handle.

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The opposite of Lake Superior in almost every way, Lake Ontario is the easternmost, lowest in elevation, smallest in surface area and perhaps the most polluted Great Lake.

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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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A north-northeast wind has pushed the warmer surface water along the Michigan shore back toward the middle of Lake Michigan and brought up colder water from well beneath the surface. This process is called upwelling.

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