September 7, 2012

The Dynamic Great Lakes Blog

The Great Lakes are a flowing river of seas left behind by Ice Age glaciers that are nearly twenty percent of the world’s supply of fresh surface water; the world’s greatest freshwater system. The Great Lakes look and behave like oceans because of their great size.

Together, the Great Lakes cover an area equal to Scandinavia and have a coastline of 11,232 miles including connecting channels, mainland, and islands. Their shoreline is equal to almost 45 percent of the circumference of the earth.

Their waters descend from highest, coldest, and northernmost Lake Superior through the St. Mary’s River and the Soo Locks to fill Lakes Michigan and Huron, then flow through the St. Clair River and Lake St. Clair and the Detroit River into Lake Erie, then down the Niagara River and Niagara Falls into Lake Ontario.

Like water spilling from a series of basins, from higher to lower, the…

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