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In the 1960s, the invasive species Eurasian Watermillfoil first arrived in Wisconsin's waters.
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The first recorded finding of eurasian water millfoil found in Wisconsin's waters was in Lake Mendota.
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In July 1982, the UW-Madison Board of Regents established the Center for Limnology with the mission being to plan, conduct and facilitate inland water research.
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The invasive species spiny water flea was discovered in Lake Huron. Scientists hypothesized that it came to North America in water onboard freighters from Europe.
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By 1987 the spiny water flea had spread to every great lake and was found in some inland lakes as well.
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By the 1990s, eurasian watermillfoil was found in more than half of Wisconsin's counties, including the shallow bays of Lake Michigan and Superior, and in Mississippi River pools.
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The first spiny water fleas were found in Wisconsin in the Gile Flowage in Iron County.
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The Invasive Species Law was approved by the Natural Resources Board. This rules regulates the transportation, possession, transfer and introduction of invasive species in Wisconsin.
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Undergraduate students in a limnology class discovered the invasive species spiny water flea in Lake Mendota for the first time.
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The Department of Natural Resources will look for the approval from the Natural Resources Board for revisions to the invasive species rule that was approved in 2009.
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