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U-M divers retrieve 8,900-year-old piece of wood from Lake Huron
Annarbor.com (12/12)
University of Michigan researchers announced they have found a 5 1/2 foot long, pole-shaped piece of wood that is 8,900 years old in Lake Huron.
RIVERKEEPERS: Tending the waterways
Niagara Gazette (2/6)
The goal of the Buffalo Niagara Riverkeeper is two-fold: protecting the water quantity and the quality, as well as connecting people to the waterfront.
Internationally renowned ‘Ocean Doctor’ to speak in Grand Rapids
MLive.com (2/3)
Known as the “Ocean Doctor,” David Guggenheim will speak in Grand Rapids, Mich., about the many similarities between the threats to the oceans and to our Great Lakes.
SUNY Fredonia to lead Great Lakes pollution study
Wall Street Journal (2/3)
Plastic pollution in the Great Lakes will be the focus of a study this summer. Led by the State University of New York at Fredonia, researchers will try to quantify the amount of plastic polluting the fresh water Great Lakes.
SSC students taking part in marine science bowl
Arenac County Independent (1/31)
Teams of Michigan high school students will be heading to Ann Arbor this weekend to take part in the annual Great Lakes Bowl, a quiz event that focuses on questions about marine and freshwater systems and biology.
No aquarium for Windsor
CBC News (1/31)
Aquariums in Cleveland, Toledo, and Chicago prove to be too much competition for Windsor.
What's going on in your neighborhood this month? Meet other people and learn together at recreational and educational events! Our new dynamic calendar is updated daily with current educational events.
3 | History repeating itself
Long-term water level fluctuations are shown on a hydrograph, a plot of lake levels versus time. The hydrographs on this page show average monthly water levels for each of the Great Lakes and Lake St. Clair since the middle of the 19th century. Levels have been measured on most lakes since 1865, with the current network of water level gages operating since 1918.
As the hydrographs illustrate, Great Lakes water levels tend to follow a cyclical pattern. The Great Lakes system experienced extremely high water levels in the 1870s, early 1950s, early 1970s, mid-1980s and mid-1990s. Extremely low water levels were experienced in the late 1920s, mid-1930s, mid-1960s, and in the late 1990s leading up to today.
Lake Superior
Lakes Michigan-Huron
Lake St. Clair
Lake Erie
Lake Ontario
See also: Current Great Lakes-St. Lawrence Water Levels
Graphics courtesy U.S. Army Corps of Engineers, Detroit District.
