How will global warming affect Lake Michigan?

Climate change will exacerbate a range of risks to the Great Lakes, including changes in the range and distribution of some species, increases in invasive species and harmful blooms of algae, and declines in beach health. Ice cover declines will lengthen the commercial navigation season.



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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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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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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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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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As of February 14, 2023, ice covered only 6.6 percent of the five freshwater lakes, which is significantly less than the 35-40 percent ice cover that is typical for mid-February, according to data published by the National Oceanic and Atmospheric Administration's (NOAA) Great Lakes Environmental Research Laboratory ( ...

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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.

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In winter, the precipitation amounts decline in the colder air. A loss of water level basically comes down to more water flowing out and evaporating than falling as precipitation.

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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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The primary driver of water levels are precipitation, evaporation, and river flow into the lakes, also referred to as net basin supply. The long term trend for both precipitation and evaporation has been upward over the last several decades.

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It is just one of the Great Lakes experiencing warming temperatures. All of the Great Lakes—Superior, Michigan, Huron, Erie and Ontario—have been warming for the past several decades. Scientists put this mainly down to climate change.

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The water level on Lake Michigan fell one inch from July 11, 2023 to Aug. 11, 2023. The current lake level is just under 580 feet, which is still about 5 inches above the long-term average for the month and approximately 4 inches below the lake level at the same time last year.

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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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The outflows of Lake Superior and Lake Ontario are controlled to keep the lake levels within a specific range, near their long-term averages. Levels of Lake Superior have been regulated since 1921. Levels of Lake Ontario have been regulated since 1958.

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Lake Erie is Dead Of all of the Great Lakes, Lake Erie had become predominantly polluted by the 1960s, largely due to the heavy industrial presence along its shores.

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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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The Great Lakes are more than capable of generating waves over 10 feet high, despite being smaller than our oceans. This lack in size actually increases the danger over the water. This is because the wave period in the Great Lakes (the time between two wave crests) is much shorter than in the ocean.

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Lake Erie averages the highest ice cover Of the five Great Lakes, Lake Erie typically reaches the highest annual maximum ice cover, often exceeding 80 percent.

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Freezing temperatures force the lake to develop an ice shelf. On windy days, waves are driven toward the shore. As these waves crash into the shoreline, they also hit the ice shelf. This pushes the water up through the air.

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