Lake Superior has frozen over completely just once since 1973 in 1996. Lake Michigan has frozen over completely zero times, but close (90% or more) only three times since 1973. Lake Erie has frozen over completely three times since 1973.
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Lake Superior's peak ice cover this winter was less than half of the typical long-term average peak ice. Lake Superior's ice cover peaked at only 20% on Feb. 24, 2023. The average peak ice over the years is 49%, more than double this year's ice.
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.
Lake Erie is the shallowest, warmest, and most productive of the Great Lakes. Three distinct basins provide a variety of offshore habitats. The Detroit River, Maumee River, and smaller tributaries drain into the western basin, which averages 24 feet deep and contains extremely nutrient-rich water.
Geology of Lake InferiorLake Inferior is an underground lake that is located beneath Lake Superior. It is believed to be formed by a process known as karstification, which is the dissolution of limestone and dolomite rock. This process creates sinkholes, caves, and underground rivers and lakes.
While there have been past “sightings,” most have turned out to be pranks or misidentifications. The reality is that the largest of the Great Lakes (Lake Superior and Michigan) are extremely deep lakes that are too cold for sharks.
Lake Erie averages the highest ice coverOf the five Great Lakes, Lake Erie typically reaches the highest annual maximum ice cover, often exceeding 80 percent.
The surface water temperature in Lake Superior is getting colder recently, despite some recent warm water around Duluth, Minnesota, and Superior, Wisconsin, the National Weather Service (NWS) in Duluth said Wednesday.
Lake Superior is heating up. It might not seem like it if you take a dip in its barely tolerable waters anytime except the hottest August day. But nearly every year, the 31,700-square-mile lake warms a little.
The heaviest lake-effect snow in the United States falls on the Tug Hill Plateau, south of Watertown, N.Y., at the eastern end of Lake Ontario, making this region one of the snowiest places in the United States. Syracuse, which is south of Tug Hill, is one of the snowiest bigger cities in the United States.
Threats to the Great Lakes' ecosystems, include invasive species, climate change, pollution, and habitat destruction. Climate change affects water temperatures, weather patterns, and lake levels.
Lake Superior is the largest freshwater lake in the world by surface area and the third-largest by volume, holding 10% of the world's surface fresh water.
Alligators are rarely found in the Great Lakes. Although some alligators thrive in freshwater, it's just too cold in the north for them to survive. They don't typically live farther north than North Carolina. It's unclear how the alligator arrived to Lake Michigan.
Lake Nicaragua is one of the largest freshwater lakes in the Americas and bull sharks travel up the San Juan River and through a series of eight rapids in a similar manner to salmon to reach the lake, where they may stay for several years.
Lake sturgeon are the largest fish in Lake Superior. They are among the oldest fish in the lake too. Did you know that a lake sturgeon can live to be older than 100 years? This species of fish has also been around for a long time—about 150 million years.
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.