Below are a variety of maps for the Lower Des Plaines River watershed
Outline of the Watershed:
Watershed Map - Communities
Detailed Map of the Watershed:
Lower Des Plaines Watershed
Natural Areas & Nature Preserves in the Des Plaines Watershed:
Natural Areas
This map in a pdf file
Subbasins/Subwatersheds of the Des Plaines Watershed:
Subbasins Map