Watershed Overview

The East and West Branches of the DuPage River Watershed are further divided into the sub-watersheds for the tributaries of the main stem.  Table 1 provides the names and areas of each sub-watershed as well as a legend for the tributary codes for Map 1.

The East and West Branch watersheds span three counties, a small portion of Cook in the north, transversing DuPage from north to south with the confluence of the two branches just south of the DuPage/Will county line.  The East Branch drains all or part of Bloomingdale, Glendale Heights, Lombard, Addison, Glen Ellyn, Downers Grove, Lisle, Westmont, Woodridge, Naperville, Bolingbrook and portions of unincorporated DuPage County.  The West Branch drains all or part of Hanover Park, Roselle, Carol Stream, Bloomingdale, Glendale Heights, Glen Ellyn, West Chicago, Winfield, Wheaton, Warrenville, Lisle and Naperville and portions of unincorporated DuPage County. 

Table 1: Upper DuPage River Watershed Tributaries (Source DuPage County Stormwater GIS data base 2006 data) The data for this table was created from the DuPage County Stormwater GIS database.  In the section on the WinSLAMM modeling sub-watershed