Water Resources of the United States

PROJECT ALERT NOTICE (IL) Moderate to major flooding forecasted in Northern Illinois

Date: Tue, 20 Feb 2018 15:16:13 EST

Summary: Moderate to major flooding is forecasted the​ northern half of ​Illinois due to 3 inches of rain falling since last night, and an additional 1-2 inches is expected to continue through mid-day tomorrow.

Since last evening, 1-3 inches of rainfall has fallen throughout the ​northern half of ​Illinois. ​Much of this area already had over 6 inches of snow on the ground, and a frost layer that is inhibiting infiltration. The National Weather Service (NWS) predicts an additional 1-2 inches to fall over the next 24 hours​.

The ​upper ​​Illinois River is currently ​projected by​ the NWS ​to reach the Major​ ​F​looding category. ​Several other smaller rivers​ (Fox, DuPage, Des Plaines, Kankakee)​ are likely to go into the NWS minor to moderate flooding category between ​now and the weekend.

Seven crews of ​Technicians​ from DeKalb and Urbana, Illinois, are deployed today. All crews are concentrating on swollen smaller streams today as most major streams are not expected to crest until ​Wednesday or later.

USGS has been in contact with ​the NWS ​and U.S. Army Corps of Engineers regarding ​streamgage observations and forecasts.

USGS WaterWatch flood table for Illinois
USGS WaterWatch flood map for Illinois

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
[an error occurred while processing this directive] URL: https://water.usgs.gov
Page Contact Information: Water Webserver Team
Page Last Modified: Sunday, 06-Jan-2019 08:08:02 EST