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State matching money needed or St. Louis River National Estuary project dies
91.3 KUWS, Duluth, MN (2/26)
The St. Louis River would be the 28th National Estuarine Research Reserve in the country and the 2nd on the Great Lakes. The reserve would bring in $550,000 in federal grants each year. To get those dollars the state needs to offer a 30% match, or about $236,000 annually.
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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.
