Scientists have discovered that many flood maps may underestimate serious risks due to hidden changes in river channels.

Testing is underway on the first phase of a new Guadalupe River flood warning system that includes eight sirens in western ...

The Des Plaines River has seen near-record flooding in northwest suburban Des Plaines, and officials fear levels could reach major flood stage this weekend with more rain in the forecast.

Homes along the Sturgeon River, Indian River and Black Lake remained surrounded by water this week as the Cheboygan Lock and Dam operates under 24-hour emergency monitoring.

Areas near the Des Plaines River from just east of O’Hare Airport north to the Wisconsin border were under a flood warning due to the river’s rising levels.

Audibility varies by conditions; the manufacturer estimates up to about a 1-mile radius. Sirens activate via National Weather ...