The Portage

The Chicago Portage National Historic Site has more information.

Last Sunday I was watching a boat tour show on the PBS channel, and it explained that the portage ran six miles between Harlem and Damen Avenues across Mud Lake. Monday I came across a review of a maps book that said this about the portage:

In the scope of things, the Chicago River is a tiny geographical feature. Yet, in map after map at the beginning of this book, it’s shown, greatly out of scale. And not only the river itself, but also the six-mile stretch of land between this river and another one, the DesPlaines.
The space of land was called Mud Lake although it was rarely anything like a lake. When it was, canoeists — Indians and, later, white traders — could paddle from one river to the other. Most of the year, though, it was a boggy mire or just plain dry, and travelers had to get out and carry their river craft (and any goods they were transporting) overland until they reached the other waterway.

And about last Saturday I was studying an 1897 map of Chicago railroads and noticed the original channel of the South Branch of the Chicago River met the Drainage Canal near Central Avenue and 39th street and that also made me think about the portage.

Wikipedia

When the universe mentions a rather esoteric topic three times in about as many days, it is telling me it is time to do a post on that topic.

First of all, the meaning of "the portage" depends on which city your are in. In Fort Wayne, IN, it means a crossing between the St. Mary and Wabash rivers. But in the Chicago area, it means a crossing between the South Branch of the Chicago River and the Des Plaines River. In both cases, a canal was dug so that cargo could remain in boats while it crossed the watershed divide between the Gulf of Mexico and the Atlantic Ocean. The canals were the Wabash and Erie and the Illinois and Michigan. Also, in both cases the canals became obsolete and the right of ways were used by another mode of transportation---the Nickel Plate Railroad (New York, Chicago and St. Louis or NYC&St.L) (reporting mark NKP) through Fort Wayne and Interstate 55 through Chicago.

Paul Petraitis posted
Robert Knight's map of Mud Lake...

Christopher N. Kaufmann commented on Paul's post
My drawn overlay of mud lake on a Google map. The lake runs from Kedzie (east) to Harlem (west). Red line is the original portage route to Chicago. Green vertical line is the continental divide. Dark green diagonal line is the now defunct portion of the Illinois Michigan Canal. The bold yellow line is Ogden's ditch, which flooded the land many times, to the chagrin of residents. This area was all industrialized by the mid 1920s. Railroads covered the canal in 1934 and the Stevenson Expy replaced the railroads in the 1950s. There are many oil refineries here now. Ottawa Trail woods is immediately west of Harlem and in the center is a marker and foundation of the Laughton Brother's trading post. The Portage historical sight is here and much of the woods are very similar to what they were in the early 1800s.

Christopher N. Kaufmann commented on Paul's post
Is this better? The blue diagonals is mud lake with the west branch of the Chicago River flowing thru it to the DesPlaines River.