Chicago Portage
The Chicago Portage is a water gap, and in the past, it was sometimes a wind-gap portage, connecting the Mississippi River and the Great Lakes.
The Chicago Portage cuts through the Valparaiso Moraine, crossing the Saint Lawrence River Divide. The saddle point of the gap is within the city of Chicago, and the Chicago Portage is a reason Chicago exists and has developed to become very important city that it is.[1]
The official flag of the city of Chicago includes four red stars which represents city history, separating two blue stripes symbolizing the waters that meet at the city.[2]
Chicago Portage Media
Map of part of ancient Lake Chicago in what became the portage region, when the Outlet River cut through the glacial moraines to drain the lake, creating the later pathway and topography of the portage
Continental Divides of North America. The pink line (center-right) denotes the Great Lakes-St Lawrence divide that runs through Chicago
Canoes in a fog, Lake Superior by Francis Anne Hopkins
Detail from a French map (1775) showing the Chicago Portage
Map of the Chicago Portage, showing Mud Lake. Photograph of a sign at Chicago Portage National Historic Site
Flag of Chicago
Chicago Portage Site - USGS High-Resolution Orthoimagery - 2005
Chicago Portage National Historic Site
References
- ↑ "The Chicago Portage National Historic Site". Friends of the Chicago Portage. Archived from the original on 2013-03-13. Retrieved 2012-08-23.
- ↑ "Chicago Facts: Municipal Flag". Chicago Public Library. Retrieved 2014-07-10.
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