Why is Lake Michigan so deep?

The lake's formation began 1.2 billion years ago when two tectonic plates moving in opposite directions left a giant scar—an event now known as the Midcontinent Rift. Less than 15,000 years ago, melting glaciers filled the giant basin, and Lake Michigan came to be. The lake's maximum depth is 925 feet.



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Not only is this lake massive - spanning 307 miles in either direction - but its shores also run parallel, causing unique wave shapes. The shapes of these waves are what contribute to rip tides, which are one of the most dangerous things swimmers can encounter in the water.

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At the bottom of Lake Michigan, you will find non-fish inhabitants of the lake, such as worms, mollusks, amphipods, and insect larvae. These small creatures provide food for non-native fish such as whitefish, round goby, and perch.

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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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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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The Lake Sturgeon - Michigan's Biggest Creature You may be a little startled if it decides to swim past your feet, as the Lake Sturgeon is rather big in size. On average, they can be anywhere between six and three feet in length. They will also weigh anywhere between 30-100lbs.

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There are some odd geological finds at the bottom, including a 2007 archeological find that was described as Stonehenge-like, although it was actually more in a V-shape. One of the stones is said to have a mastodon image on it (although it's not fully clear if it was man-made or just a natural formation).

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The deepest part of Lake Michigan is over 990 feet. The water at the bottom of that deep pocket is still 39 degrees to 40 degrees.

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The average underwater visibility of Lake Superior is about 8 metres or 27 feet, making it the cleanest and clearest of the Great Lakes.

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Lake Michigan Tunnels The solution was to intake water further offshore through a system of cribs that connected to the water supply via tunnels under the lake. The first tunnel was completed in 1867, connecting to an intake crib two miles offshore to the pumping station at Chicago and Michigan Avenues.

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The Great Lakes are freshwater ecosystems. Traditionally, Lake Michigan, for example, has been a very low-salt lake, with levels around one milligram of chloride per liter of water.

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Two Coho fishermen pulled a 29-inch shark from Lake Michigan about two miles off the Milwaukee shore on April 25, 1969. The shark was dead, but for several days fishermen in the area were uneasy.

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Named the “Most Beautiful Place in the United States,” Sleeping Bear Dunes National Lakeshore is a must-on any Lake Michigan travel bucket list. You'll find 26 miles of pristine, sandy beach; towering dunes; wooded trails through lofty hardwood forests and an aqua-blue lake.

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Torch Lake, a glacier-carved gem set into the lush land of northwest lower Michigan, is often compared to the Caribbean, thanks to its incredibly clear (albeit quite cold) blue-green waters.

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