Why is climate change a big concern for the Great Lakes?

Climate change is already taking a significant toll on the Great Lakes region. Rising temperatures exacerbate algal blooms in Lake Erie, leading to bacteria-polluted drinking water in Toledo, Ohio, potentially causing a number of harmful health conditions for half a million residents.



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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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Climate change's hotter temperatures and society's diversion of water have been shrinking the world's lakes by trillions of litres of water a year since the early 1990s. A close examination of nearly 2,000 of the world's largest lakes found they are losing about 21.5 trillion litres a year.

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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. Pollutants from residential, agricultural, and industrial areas reduce water quality.

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Climate change isn't only causing wildfires and massive heat waves, but it's drying up vital bodies of water such as the Great Salt Lake bordering the Salt Lake Valley.

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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 following are some of the most important basic factors that give unique character to each lake ecosystem. Climate: Temperature, wind, precipitation, and solar radiation all critically affect the lake's hydrologic and chemical characteristics, and indirectly affect the composition of the biological community.

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The net volume loss in natural lakes is largely attributable to climate warming, increasing evaporative demand, and human water consumption, whereas sedimentation dominates storage losses in reservoirs.

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According to a recent study by Brigham Young University, it's possible that Great Salt Lake could dry up completely in the next five years.

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Lake Superior is the Cleanest and Clearest Great Lake Because of its somewhat isolated location and long cold winters, not much farming is done along Superior's shores. This means lower amounts of nutrients, sediments, and organic material are floating around the lake.

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More than 30 million people rely on the Great Lakes for drinking water—10 percent of the U.S. population and 30 percent of the Canadian population.

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