Illinois Flood Warning | Effective 04/20/2026 19:04
...The Flood Warning continues for the following rivers in
Illinois...
Fox River at Montgomery affecting Kane and Kendall Counties.
Fox River at Algonquin Lock & Dam tailwater affecting Kane,
McHenry and Lake IL Counties.
* WHAT...Moderate flooding is occurring and major flooding is
forecasted.
* WHERE...Fox River from Johnsburg downstream to Red Gate Road in
St. Charles, including the Algonquin Lock & Dam tailwater gauge.
* WHEN...Until further notice.