West Branch DuPage River Watershed Map
DuPage County Stormwater Management provides access to real-time water resource data throughout the East Branch DuPage River Watershed. The following map below provides an overview of the watershed, including one flood control facility, four stream gages and three rain gages.
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.
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 2: Stream Gages
Please note, some gages may be reporting incorrect values. Staff is monitoring the real current elevations of each stream. The best way to view real-time elevation data is through the Cameras page.
||Gage Height (ft)
|Naperville Pedestrian Bridge
Table 3: USGS Monitored Stream Gages
Click on stream gage to see further information in a new browser.
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.
||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.