I very strongly encourage you to use Google Maps to view what’s left of this once-vast marshland, as described in the article. As a starting point, I’ll paste a link below that will take you to a Google Map centered on the now-straight Kankakee River a little southeast of Hebron, IN. Again, as mentioned in Ms. Fosmoe’s article, note the abundant pinhook lakes near the banks of the modern Kankakee, which reveal its previous meandering nature.

Google Map link: https://goo.gl/maps/SMNkP