Polygon-Based River Flood Warnings

Des Plaines River flooding April 2013In August 2013, NWS Chicago implemented polygon-based river flood warnings and statements for river forecast locations in our area of responsibility. Instead of highlighting the entire county on the Watch/Warning/Advisory map on the front page of our web site, only the area along the river in proximity to the river forecast point will be highlighted in green.


Important Note: The highlighted areas are not inundation maps, but are simply a means to graphically represent select rivers where we provide flood forecast and warning service.

 example of river flood polygons

 



Return to News Archive

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.