ILLINOIS FLOW REPORT

Last Updated: January 2, 2026

Illinois streamflow conditions have shown variability across the state with significant below-normal flows impacting most rivers, which could affect water enthusiasts looking for seasonal river trends and activities. The Embarras River at Lawrenceville, Little Wabash River at Carmi, and Sangamon River at Petersburg are experiencing notably low streamflows, more than 95% below normal, with current measurements at 141 cfs, 142 cfs, and 146 cfs respectively, indicating potential flow droughts. Conversely, the Kaskaskia River near Chesterville flows at 436 cfs, closer to normal conditions, which may still support some recreational water activities. Major waterways such as the Wabash River at Mt. Carmel and the Illinois River, with streamflows of 8240 cfs and 7980 cfs respectively, are also experiencing reduced flows that could impact nearby cities and ecosystems.

The Mississippi River at Chester reports a flow of 94000 cfs, which, despite being below normal, remains significant and suggests that large water bodies are less affected by the current trend. However, the current gage height of 1.93 meters there does not indicate immediate flooding concerns. The Fox River, a popular whitewater trail, shows various streamflow changes with levels at Algonquin, Dayton, Montgomery, and South Elgin ranging from 1120 cfs to 1490 cfs, and gage heights from 6.18 meters to 12.73 meters. Overall, the state's rivers are experiencing lower-than-normal streamflow, with limited instances of flooding risks; water enthusiasts should exercise caution and verify conditions before planning activities.