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West Branch DuPage River Watershed Map

DuPage County Stormwater Management provides access to real-time water resource data throughout the West Branch DuPage River Watershed. The following map below provides an overview of the watershed, including its seven flood control facilities, eight stream gages, ten rain gages and four cameras.

Click features on the map to view assets information in pop-ups. Click the HELP button to learn more on how to use this map. View map full screen.


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Gage Totals

DuPage County Stormwater Management uses the United States Geological Survey (USGS) stream and rain gages, as well as a local stream gage near Fawell Dam (Naperville). The stream gages show real-time observations of stream height and discharge. USGS compiles these measurements hourly. The Fawell Dam stream gage reports water surface elevation (WSEL) every 20 minutes. The rain gages provide information about precipitation totals in the last week, as well as a link to the USGS station page.

Table 1: Rain Gages
Location Inches
RG8 - DuPage County Airport Link to USGS Site
RG33 - Wheaton Municipal Building 0.00
RG40 - Bartlett Treatment Plant Link to USGS Site
RG44 - Carol Stream Treatment Plant 0.00
Table 2: Stream Gage
Stream Gage Gage Height (ft)
SG6 - Fawell Dam 675.26
Table 3: USGS Monitored Stream Gages
Stream Gage Description Gage ID Gage Height (ft)
West Branch near West Chicago
Kress Creek at West Chicago
West Branch near Warrenville
West Branch near Naperville
Spring Brook #2 at 87th Street near Naperville

Click on stream gage to see further information in a new browser.

USGS Cooperation

DuPage County works together with the USGS to provide real-time data. Many of the precipitation and stream gages within DuPage County are monitored and maintained through a cooperative agreement with the USGS. The following table provides rainfall totals for the last seven days at the USGS-monitored locations within the DuPage County.

Gage Name Gage ID 1 Hour Total (inch) 3 Hour Total (inch) 6 Hour Total (inch) 12 Hour Total (inch) 24 Hour Total (inch) 2 Day Total (inch) 7 Day Total (inch)

Data is provisional and may display inaccuracies because of instrument malfunctions or physical changes at the gage location.

Flood Forecast Simulations

Using real and forecasted precipitation and stream levels, DuPage County Stormwater Management models rain totals countywide. They are simulated using provisional data, and actual watershed conditions may vary. All local agencies should use individual judgment when making operating decisions

Simulations have been run at each of the below locations. In addition, County staff provides simulation notes. Further information regarding individual sites can be accessed by visiting their respective hyperlinks.