SOUTH CHIPPEWA BASINIt is so named because it is the main site of the former Lake Chippewa. Depths in excess of 275m, deepest of Lake Michigan, are reached near the southern end of this basin, where a large segment of the floor of Lake Michigan extends below sea level.
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Lake Michigan is one of the five Great Lakes of North America. It is the second-largest of the Great Lakes by volume and the third-largest by surface area, after Lake Superior and Lake Huron.
In 2007, a row of stones paralleling an ancient shoreline was discovered by Mark Holley, professor of underwater archeology at Northwestern Michigan College. This formation lies 40 feet (12 m) below the surface of the lake. One of the stones is said to have a carving resembling a mastodon.
At 1,943 feet (592 meters), Crater Lake is the deepest lake in the United States and one of the deepest in the world. The depths were first explored thoroughly in 1886 by a party from the U.S. Geological Survey.
Lake Michigan TunnelsThe 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.
Singapore's demiseWithout the protective tree cover, the winds and sands coming off Lake Michigan quickly eroded the town into ruins and within four years had completely covered it. The town was vacated by 1875. Today, Singapore lives on only in the name of the Singapore Yacht Club, which is at one end of town.
As of Aug. 15, 2023, 24 people have died in Lake Michigan, which is frequently the lake where the most drownings occur. Across the Great Lakes 56 drownings have occurred.
Lake Michigan wrecks: the oldest and the mostestLake Michigan contains more shipwrecks than any of the other Great Lakes, as well as the oldest recorded one: the French ship Griffon, the first European vessel to sail the Lakes.
Dreyer is the only person who has swum the width of Lake Michigan between Wisconsin and Michigan, having swum from Two Rivers, Wisconsin, to Ludington, Michigan, in 1998. In the 2023 swim, he was attempting to beat his own record by swimming 25 miles further in the route from Milwaukee to Grand Haven.
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).
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.
The solution was to bore a tunnel 134-mi long tunnel about 200 ft below the bed of Lake Michigan to provide water to cool and recycle steam from the power plant's turbines.
Lake Michigan, the third largest by surface area (22,300 square miles) and second largest by volume (1,180 cubic miles), is the only Great Lake located entirely within the United States.
Situated in south-east Siberia, the 3.15-million-ha Lake Baikal is the oldest (25 million years) and deepest (1,700 m) lake in the world. It contains 20% of the world's total unfrozen freshwater reserve.