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| 20260107150621 | Como | IL | Rock River | 12/14/2026 | 2026 | Freeze-up | 41.756397 | -89.772311 | - | CMOI2 | released | No flooding reported. | Jam reported on the Rock River near Como, IL. Jam shifted/repositioned over about a week before releasing c 22 December. |
| 20260127192339 | Aroma Park | IL | Kankakee River | 01/22/2026 | 2026 | Freeze-up | 41.078056 | -87.817796 | - | - | not flooding | No flooding reported. | Freeze-up jam formed on the Kankakee River near it's confluence with the Iroquois River near Aroma Park. |
| 20260127192140 | Kankakee | IL | Kankakee River | 01/22/2026 | 2026 | Freeze-up | 41.208004 | -88.016148 | - | - | not flooding | Minor lowland flooding reported. Deemed 'not impactful'. | Freeze-up jam formed on the Kankakee River near the Will County line. |
| 20260127191610 | Momence | IL | Kankakee River | 01/20/2026 | 2026 | Freeze-up | 41.160214 | -87.665708 | - | - | not flooding | No flooding reported. | Freeze-up jam formed on the Kankakee River near Momence. |
| 20260127190627 | West Dundee | IL | Fox River | 01/19/2026 | 2026 | Freeze-up | 42.098699 | -88.276425 | - | - | not flooding | No flooding reported. Jam remains in place with little backwater effect. | Freeze-up jam formed on the Fox River near East/West Dundee. |
| 20260127191656 | Rockton | IL | Rock River | 01/19/2026 | 2026 | Freeze-up | 42.461025 | -89.086822 | - | - | not flooding | No flooding reported. | Freeze-up jam formed on the Rock River near Rockton. |
| 20260127191237 | Cherry Valley | IL | Kishwaukee River | 01/19/2026 | 2026 | Freeze-up | 42.236559 | -88.954091 | - | - | not flooding | No flooding reported. | Freeze-up jam formed on the Kishwaukee River near Perryville/Cherry Valley. |
| 20260127190117 | Des Plaines | IL | Des Plaines River | 01/18/2026 | 2026 | Freeze-up | 42.049951 | -87.873006 | - | - | not flooding | No flooding reported. Jam remains in place with little backwater effect. | Freeze-up jam formed on the Des Plaines River near Des Plaines. |
| 20260127190252 | Lyons | IL | Des Plaines River | 01/18/2026 | 2026 | Freeze-up | 41.825404 | -87.820063 | - | - | not flooding | No flooding reported. Jam remains in place with little backwater effect. | Freeze-up jam formed on the Des Plaines River near Lyons. |
| 20260127191819 | Latham Park | IL | Rock River | 01/18/2026 | 2026 | Freeze-up | 42.355411 | -89.056946 | - | - | not flooding | No flooding reported. | Freeze-up jam formed on the Rock River near Latham/Machesney Park. |
| 20260127190456 | Lemont | IL | Des Plaines River | 01/17/2026 | 2026 | Freeze-up | 41.676397 | -88.019907 | - | - | not flooding | No flooding reported. Jam remains in place with little backwater effect. | Freeze-up jam formed on the Des Plaines River near Lemont. |
| 20260120155913 | Cleveland | IL | Rock River | 01/17/2026 | 2026 | Freeze-up | 41.485319 | -90.373046 | - | JOSI2 | not flooding | Minor flooding was reported in Cleveland, IL. | A series of ice jams have formed upstream of Moline, IL, and are affecting stages as far upstream as Joslin, IL. |
| 20260106144344 | Moline | IL | Rock River | 01/02/2026 | 2026 | Freeze-up | 41.460831 | -90.502032 | - | MLII2 | not flooding | Stage records suggest minor flooding; none reported. | Ice jam reported near 27th St. bridge in Moline. Stage very stable (c 1/5). Jam seems to have frozen in. |
| 20260127190833 | Oswego | IL | Fox River | 01/02/2026 | 2026 | Freeze-up | 41.682186 | -88.360101 | - | - | not flooding | Minor lowland flooding reported. | Freeze-up jam formed on the Fox River near Oswego. |
| 20260107151138 | Momence | IL | Kankakee River | 12/15/2025 | 2026 | Freeze-up | 41.164674 | -87.651374 | - | MOMI2 | released | No flooding reported. | Jam reported on the Rock River near Momence, IL. Released c 21 December. |
| 20260107150054 | Byron | IL | Rock River | 12/04/2025 | 2026 | Freeze-up | 42.125655 | -89.232657 | - | BYRI2 | released | No flooding reported. | Jam reported on the Rock River near Byron, IL. Released c 14 December. |