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The normal high-water mark is 1.17 feet (0.36 m) above the datum (601.1 ft or 183.2 m). In the summer of 1985, Lake Superior reached its highest recorded level at 2.33 feet (0.71 m) above the datum. [25] 2019 and 2020 set new high-water records in nearly every month. [25] Historic low water The lake's lowest levels occur in March and April. The ...
The persistence and strength of the storm's westerly winds also piled the waters of Lake Michigan along the Michigan shoreline leading to declines in lake levels on the Illinois and Wisconsin side of the lake. Based on NOAA lake level sensors, an updated analysis of Wednesday, October 27, 2010, water levels on Lake Michigan revealed a two-day ...
Lake Superior agate. The Lake Superior agate is a type of agate stained by iron and found on the shores of Lake Superior. Its wide distribution and iron-rich bands of color reflect the gemstone's geologic history in Minnesota, Wisconsin, Nebraska, Iowa, Kansas, and Michigan. In 1969 the Lake Superior agate was designated by the Minnesota ...
The water level of Lake Michigan–Huron had remained fairly constant over the 20th century. [36] Recent lake levels include record low levels in 2013 in Lakes Superior, Erie, and Michigan-Huron, [37] followed by record high levels in 2020 [38] in the same lakes. The water level in Lake Ontario has remained relatively constant in the same time ...
A cold northwesterly to westerly wind over all the Great Lakes created the lake-effect snowfall of January 10, 2022. Lake-effect snow is produced during cooler atmospheric conditions when a cold air mass moves across long expanses of warmer lake water. The lower layer of air, heated by the lake water, picks up water vapor from the lake and ...
The waterway connects to Lake Superior at its north and south entries (upper and lower portage entry lighthouses), with sections known as Portage Lake and Torch Lake in between. The primary tributary to Portage Lake is the Sturgeon River. The Keweenaw Waterway in winter, looking west toward the Portage Lake Lift Bridge.
SS Edmund Fitzgerald was an American Great Lakes freighter that sank in Lake Superior during a storm on November 10, 1975, with the loss of the entire crew of 29 men. When launched on June 7, 1958, she was the largest ship on North America's Great Lakes and remains the largest to have sunk there.
Great Lakes Waterway. The Soo Locks between Lake Superior and the St. Marys River. The Great Lakes Waterway (GLW) is a system of natural channels and artificial locks and canals which enable navigation between the North American Great Lakes. [1] Though all of the lakes are naturally connected as a chain, water travel between the lakes was ...