Are the Great Lakes getting deeper?

Water levels in the Great Lakes have fluctuated since 1860. Over the last few decades, water levels have declined slightly for most of the Great Lakes (see Figure 1). The past few years, however, have shown notable increases toward the top of the historical range.



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The loss of water in December is therefore to be expected. Lake Superior declined 2 inches from November 30, 2022 to December 30, 2022. This is a fairly typical amount of water decline for December. It represents what sounds like a bunch of water: one inch of water on Lake Superior equally 550 billion gallons of water.

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According to the average of their simulation ensemble, by 2040–2049, the average annual water levels of Lake Superior, Michigan-Huron, and Erie are projected to increase by 0.19, 0.44, and 0.28 m, respectively, relative to 2010–2019 under the Representative Concentration Pathway (RCP) 8.5 scenario.

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Water levels in the Great Lakes have fluctuated since 1860. Over the last few decades, water levels have declined slightly for most of the Great Lakes (see Figure 1).

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The Great Lakes are struggling under the combined weight of many ailments, from invasive species and toxic chemicals to the nutrient runoffs that fuel Lake Erie's chronic algae problem. And in many cases, climate change is making it worse.

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The water that replenishes the Great Lakes comes from precipitation, which is driven by the region's climate.

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10% of the entire planet's fresh water are contained in one inland sea. The amount of snow that gets melted and runs into the Great Lakes each year is so vast, that there is zero chance of running low. Droughts don't exist up there. Here in Perth Western Australia we have a dam, little rain and treated water.

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These lake surface temperatures are projected to rise by as much as 7°F by 2050 and 12.1°F by 2100. Higher temperatures, increased precipitation, and lengthened growing seasons are likely to result in increased production of blue-green and toxic algae in the lakes.

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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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Pollution from over a century of intensive development remains in the sediment of many Great Lakes tributaries, harming fish and wildlife and leaving water unsafe for people. These sites are being cleaned up through the Great Lakes Legacy Act by the U.S. EPA in partnership with local, state, and private organizations.

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The most dangerous predator in the Great Lakes is the sea lamprey, which was actually introduced as an invasive species. Primarily, it goes after a sports fish called the lake trout, often wounding them as they kill them off. It is also attracted to the blood and bodily fluids of any creature.

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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 Erie drains into Lake Ontario via the Niagara River. The entire system flows to the Atlantic Ocean via the St. Lawrence River. As it flows from its westernmost point in Duluth, Minnesota to the Atlantic Ocean, the waterway drops in elevation approximately 600 feet.

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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 Erie has a lake retention time of 2.6 years, the shortest of all the Great Lakes. The lake's surface area is 9,910 square miles (25,667 km2). Lake Erie's water level fluctuates with the seasons as in the other Great Lakes.

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In the first half of 2023, Lake Erie's water levels are expected to be lower than in 2022 by anywhere from six to 14 inches, according to predictions from the U.S. Army Corps of Engineers. The lake's levels should be 22 inches to 28 inches below the record-high levels.

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In the first half of 2023, Lake Erie's water levels are expected to be lower than in 2022 by anywhere from 6 inches to 14 inches, according to predictions from the U.S. Army Corps of Engineers included in its December 2022 water level summary.

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