Lake Erie scored a good rating in two categories: drinking water and ground water. Swimming, consumption of fish and harmful pollutants are rated as fair.
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Currents in Lake Erie can be dangerous! Any current flowing faster than 2 mph is considered dangerous. Dangerous currents can exceed 5 mph — faster than an Olympic swimmer can swim.
The major sources of phosphorus reductions were phosphorus outputs at wastewater plant discharges; eliminating phosphorous from laundry detergent; and no-till farming practices. Because of the phosphorus reductions, our Lake became much more clear and clean.
The pollution process was exacerbated by water flowing into the lake from various industrial cities. Detroit was home to factories that dumped acids, iron and oil wastes into the river that flowed into Lake Erie at its Western end. Runoffs from Cleveland farms carried wastes into the lake from its Southern end.
Lake Superior is the Cleanest and Clearest Great LakeBecause 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.
While at times Lake Erie can be flat and calm, as wind blows across Lake Erie's surface, energy is transferred from the wind to the water. This energy generates currents and builds waves.
Why is Lake Erie so important? Erie is the most biologically productive and diverse of all the Great Lakes due to its warm shallow waters. Alongside this astounding biodiversity, more than 11 million people get their drinking water from the Lake Erie watershed.
Lake Erie provides drinking water for more people than any other, but algae blooms are making it toxic. Every year, an explosion of microscopic life reigns over western Lake Erie, forming a green slick of algae and bacteria so massive and vibrant that it can be seen from space.
The cause of the algae bloomsLake 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.
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.
Lake Annecy originates from around 18,000 years ago, as a result of the melting of glaciers in the Alps. Today, it is considered the second largest lake in France and it has the title of the cleanest lake in Europe, due to strict environmental regulations introduced around 1960.
The Blue Lake, New ZealandScientists in 2011 found out that this is the clearest lake in the world. The waterbody is fed by another glacial lake, which is free of debris.