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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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.
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.
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.
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.
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.
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.
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.
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.
Swimmers didn't find it too appealing, but it was popular for those who wanted to fish for trout. However, an analysis of satellite images between 1998 and 2012 showed that Lake Michigan and Lake Huron are now clearer than Lake Superior, which had always been the clearest of the Great Lakes in the past.
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.
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.
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.
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.
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.
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.
When the lake is deep, and the angle of incoming light is smaller, Lake Michigan's color appears deep blue. This is because the light travels down with little obstructions and dissipates far below the surface. The light then appears darker in the visible spectrum.
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.
In records dating from the middle 1800s, even in the coldest winters, Lake Michigan has never completely frozen over. It has been as much as 90 percent or more ice-covered in 1903-04, 1976-77, 1978-79, 1998-99 and 2013-14.
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.