04/22/2026
This morning, Lake County Stormwater Management Commission (SMC) raised its Flood Threat Alert Status to Red. This is SMC’s highest alert level and signals that Major Flooding is occurring in Lake County. It is mostly contained to the Upper Fox River and Chain O’Lakes area as well as the Lower Fox River in the Barrington area, but is substantial in multiple areas.
As the weather forecast continues to develop for the rest of the week, please stay alert! The weather forecast is currently showing a chance for additional rain at the end of this week and early next week, which could impact flooding conditions.
SMC teams are actively out in the field, continuing to survey these areas to record flood impacts and gather information. Additional information and details will be shared as they’re available.
The Upper Fox River, Chain O’Lakes, and Lower Fox River areas in Lake County are in Major Flood status. Portions of the Upper Fox River and Chain O’Lakes area are expected to peak today. The Lower Fox River in the Barrington area is anticipated to peak tomorrow.
There is a threat of flood impacts to downtown Fox Lake, businesses, and properties in these areas. Please stay alert if you’re located in a flood-prone area.
The water levels of the Fox River and Chain O'Lakes could remain high for a week or two before lowering.
The Chain O’Lakes flood report is available to review:https://dnr.illinois.gov/content/dam/soi/en/web/dnr/waterresources/documents/Fox%20River%20Status%20Update%2004-22-26.pdf
The Des Plaines River continues to lower. The Upper Des Plaines near the Wisconsin state line is still in Minor Flood status.
The Des Plaines River in the Gurnee and Lincolnshire areas is still in a Moderate Flood status and is anticipated to drop to Minor Flood status tomorrow.
The most up to date flood information, including information about anticipated flood impacts, can be found on the National Oceanic and Atmospheric Administration (NOAA) website.
Information about the Gurnee area: https://water.noaa.gov/gauges/GUNI2
Information about the Lincolnshire area: https://water.noaa.gov/gauges/LDRI2
Information about the Chain O’Lakes: https://water.noaa.gov/gauges/FLVI2
Information about the Barrington area: https://water.noaa.gov/gauges/MHYI2 and https://water.noaa.gov/gauges/AFBI2
For further flood resource information, visit SMC’s Flood Response page: https://www.lakecountyil.gov/5349/Lake-County-SMC-Flood-Response