Is the Sanitary & Ship canal the same as Cal Sag? If not, what does Cal Sag stand for?
The Sanitary & Ship Canal is not the same as the Cal Sag. The Cal-Sag stands for the Calumet Sag River. It's a channel that runs from the Sanitary & Ship Canal through the far southern suburbs of Chicago, no where near Bolingbrook.
The Sanitary & Ship Canal, however, has a number of bodies of water that run parallel, namely the I&M Canal (Illinois & Michigan Canal-which was replaced by the Sanitary & Ship Canal and is now more like a creek) and the Des Plaines River.