41°17'N / 89°3'W / Altitude 188 m / 16:33 2026/06/17, America/Chicago (UTC-5)
From: 2026/06/17, 11:48
To: 2026/06/18, 06:00
...The Flood Warning continues for the following rivers in Illinois... Illinois River at La Salle affecting Bureau, Putnam and La Salle Counties. For the Illinois River (Upper)...including La Salle...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River from Starved Rock Lock and Dam downstream to confluence with Big Bureau Creek, including the La Salle gauge. * WHEN...Until further notice. * IMPACTS...At 22.0 feet, Lower parking lot at Starved Rock State Park is inundated east of La Salle. High water levels begin to impact shipping interests along the river. * ADDITIONAL DETAILS... - At 10:45 AM CDT Wednesday the stage was 21.1 feet. - Forecast...The river is now expected to crest near 24 to 25 feet on Friday. - Flood stage is 20.0 feet. - http://www.weather.gov/safety/flood
Bureau, IL; La Salle, IL; Putnam, IL
A Flood Warning means water levels above flood stage are imminent or
may already be occurring. Persons along rivers and streams in the
warned area should take immediate precautions to protect life and
property.
These forecasts are based on observed precipitation as well as
forecast precipitation 24 hours into the future. Changes to the
rainfall forecast, or any additional rainfall after 24 hours, may
cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by Thursday morning.
NWS Chicago IL
2026/06/17, 11:48From: 2026/06/17, 12:53
To: 2026/06/17, 20:00
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Illinois, including the following areas, Central Cook, DuPage, Eastern Will, Ford, Grundy, Iroquois, Kane, Kankakee, Kendall, La Salle, Lake IL, Livingston, Northern Cook, Northern Will, Southern Cook and Southern Will and northwest Indiana, including the following areas, Benton, Jasper, Lake IN, Newton and Porter. * WHEN...Until 9 PM CDT /10 PM EDT/ this evening. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Additional waves of heavy rainfall are possible through the evening with rainfall rates in excess of one to two inches per hour possible. Soil moisture and streamflow are already elevated, so any heavy rainfall could result in flooding of rivers, streams, urban areas, and other flood prone areas. The highest threat for flash flooding is expected near and south of Interstate 80. - http://www.weather.gov/safety/flood
La Salle,La SalleA Flood Watch for flash flooding means rapid-onset flooding is
possible, but not yet certain, based upon the latest forecasts.
Flash flooding is a dangerous situation. Persons with interests
along area rivers, creeks, and other waterways should monitor the
latest forecasts and be prepared to take action should flooding
develop.NWS Chicago IL2026/06/17, 12:53