What is the level of Lake Michigan in 2023?

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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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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You can read more about this as well as other myths about water level fluctuations in this blog. Over the next 6 months, Lake Michigan water levels are predicted to be below last year's levels, but remain above long term average water levels indicated by the dashed blue line in the image below.

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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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Over the past two years, the water level declines have been a little more than average and the water level increases have been less than average. This is especially true on Lakes Michigan and Huron.

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The lowest monthly average lake level for the representative network of gages on Lake Michigan/Huron, 576.02 feet IGLD 1985 International Great Lakes Datum, occurred in January 2013. The highest monthly average lake level for the network of gages, 582.35 feet IGLD 1985, occurred in October 1986.

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While the Great Lakes will freeze over partially during the winter, they almost never freeze completely. This is mainly due to their size. The Great Lakes are too large to freeze over entirely on a regular basis.

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The Great Lakes shoreline is an actively eroding coast. Some shorelines erode more quickly than others. These are high risk erosion areas (HREAs). The HREAs are eroding at an average rate of one foot or greater per year over at least 15 years.

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Every fall, the lake experiences a 'turnover' — a mixing of the layers that results in similar temperatures throughout.

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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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Those findings are consistent with a study from Michigan Technological University. That study found Lake Superior is expected to rise on average by 7.5 inches while levels on the Lake Michigan-Huron system is projected to increase 17 inches by 2050 due to climate change.

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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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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.

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Climate change is fueling more extreme Lake Michigan Water levels, along with stronger winds and heavier storms. These conditions exacerbate erosion, beach loss, and damage along the shore.

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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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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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Current pressures on the Lake Michigan ecosystem include increasing use of groundwater by a growing basin population, disruption of the aquatic food web, and habitat alteration.

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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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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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