The project introduces a breakthrough in urban flood prediction, using GPU-accelerated computing to deliver near real-time forecasts at a city scale rather than across broader regions.

The National Weather Service said recent heavy rainfall has left the soil saturated and elevated stream and creek levels, increasing the risk more rainfall could trigger rapid runoff and flash flooding.

The threat has been building for years. Over the past century in Chicago, the likelihood of heavy rainstorms has increased sevenfold. These storms can drop more than 8.5 inches of rain in 24 hours.

Our findings show how hydrometeorological, land surface, and subsurface conditions jointly control network dynamics, offering a foundation for building urban watershed resilience.

In addition to its important navigation mission, the Chicago Harbor Lock also serves as a significant flood reduction measure for the city of Chicago.

According to the Overflow Action Alert, MWRD officials are asking residents to take steps to reduce their water usage in coming days in an effort to limit the amount of water that goes into sewer systems.

There are simple things we can all do to reduce flooding around our homes, neighborhoods and even across the city.

As of Wednesday afternoon, Chicago had recorded over 9 inches of precipitation this season, making it the city’s second-wettest spring on record, according to the University of Illinois State Water Survey.

The Chicago River Swim presented by the City of Chicago and Mayor Brandon Johnson will return for its second annual event on Sunday, September 20, 2026.

The event is organized by the nonprofit A Long Swim, which was founded by marathon swimmer and ALS advocate Doug McConnell.