Is Lake Erie still biologically dead?

Lake Erie is the smallest of the Great Lakes by volume and also the shallowest. It warms quickly in the spring and summer and cools quickly in the fall. The shallowness of the basin and the warmer temperatures make it the most biologically productive of 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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The water is drinkable and the amount of toxic chemicals has declined. “There's good news, but it is coupled with the sobering reality that we have significant problems that linger,” said Brian Smith, associate executive director of Citizens Campaign for the Environment.

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Dead Zones This stratification of lake water is due to the different densities of water with temperature change. The bacterial activity increases as dead algae and other materials settle to the bottom of the lake. Since the hypolimnion is much smaller than the upper layers, the oxygen can be depleted during the summer.

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Because of the phosphorus reductions, our Lake became much more clear and clean. Fish flourished and Lake Erie became known as the “Walleye Capital of the World.” Tourists once again flocked to Lake Erie. Lake Erie became the greatest ecosystem recovery in the world.

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Lake Erie is one of the smallest of the Great Lakes and is relatively shallow and warm. Walleye, yellow perch, lake sturgeon, brook trout, lake whitefish, muskellunge, and introduced salmon species are among the many kinds of fish in the Great Lakes.

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The average underwater visibility of Lake Superior is about 8 metres or 27 feet, making it the cleanest and clearest of the Great Lakes.

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The cause of the algae blooms Lake Erie's algae blooms are caused by runoff pollution. This type of pollution occurs when rainfall washes fertilizer and manure spread on large farm fields into streams that flow into Lake Erie.

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Things improved for the lake with the passage of environmental legislation in the 1970s. Bihn believes that Lake Erie is one of the great success stories of the Clean Water Act of 1972, leading some to dub it the comeback lake.

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While it is doubtful the lake will face as drastic changes as it did during the Pleistocene Epoch, it is in fact likely that Niagara Falls will, in time, migrate up stream causing it to converge with Lake Erie waters. However by the time that takes place, the basin of Lake Erie will have lowered significantly.

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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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While there is much to celebrate about the progress made to protect the Lake Erie, there is still much work to be done. The excessive nutrient load running into Lake Erie continues to cause unacceptable harmful algal blooms (HABs) every summer in the Western Basin.

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Dead zones occur in coastal areas around the nation and in the Great Lakes — no part of the country or the world is immune. The second largest dead zone in the world is located in the U.S., in the northern Gulf of Mexico.

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Evaporation continues throughout the winter. Lake Erie, as the shallowest and southernmost lake, is also the warmest and may not always freeze over. If ice cover is insignificant, the open water continues to lose vapor to the dry winter air, dropping water levels.

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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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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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