| 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. |
| 20260203174645 | North Fork | ID | Salmon River | 01/28/2026 | 2026 | Break-up | 45.364524 | -113.954818 | - | - | causing flooding | Lowland flooding was reported, including impacts to Wagonhammer Campground and RV park. | An ice jam was reported south of North Fork, ID, near Maxwell Lane on the Salmon River. The jam extends up to North Fork. |
| 20260127174457 | Newport | NY | West Canada Creek | 01/26/2026 | 2026 | Freeze-up | 43.19232 | -75.02317 | - | - | causing flooding | Local officials report water in several residents basements and fear higher stages downstream if the jam breaks. | Freeze-up jam formed on West Canada Creek in Newport, NY. |
| 20260131134335 | Trenton | NJ | Delaware River | 01/25/2026 | 2026 | Freeze-up | 40.134898 | -74.744394 | - | tren4 | not flooding | No flooding reported. | A freeze-up jam formed downstream of Trenton, NJ. Location is inferred from satellite imagery and gauge records, though the gauges below Trenton are heavily influenced by the tide. Jam has caused a ~2 ft rise in river stage at Trenton and depressed stage downstream at Baxter Water Treatment. As of 1/31, stage at Trenton continues to slowly raise, which may lead to mechanical reorganization or breakup of the jam. |
| 20260203173535 | Lemhi | ID | Lemhi River | 01/24/2026 | 2026 | Break-up | 44.876992 | -113.626028 | - | - | not flooding | Lemhi gauge reported readings over flood stage for much of 1/29, though stage increase starting on the 24 was strangely linear. The water crested around 7' before the jam apparently released. | Freeze-up jam formed on the Lemhi River near Lemhi, Id. |
| 20260127144009 | Columbus | NE | Platte River | 01/23/2026 | 2026 | Freeze-up | 41.400089 | -97.305964 | - | - | not flooding | Minor flooding in low-lying areas reported. | Freeze-up jam reported near the confluence of the Platte and Loup Rivers outside Columbus. |
| 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. |
| 20260123143417 | Aylesworth | IN | Kankakee River | 01/21/2026 | 2026 | Freeze-up | 41.2813 | -87.103409 | - | - | not flooding | No flooding reported. | Freeze-up jam near Aylesworth, IN. |
| 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. |
| 20260127191049 | Shelby | IN | Kankakee River | 01/19/2026 | 2026 | Freeze-up | 41.18231 | -87.346583 | - | - | not flooding | No flooding reported. | Freeze-up jam formed on the Kankakee River near Shelby. |
| 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. |
| 20260120164142 | Maskell | NE | MIssouri River | 01/17/2026 | 2026 | Freeze-up | 42.72863 | -96.887465 | - | MRPN1 | not flooding | No flooding was reported. | Missouri River Reservoir Regulation reported an ice jam formed between Ponca and Maskell on 17 January. |
| 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. |
| 20260113142844 | Portland | MI | Grand River | 01/07/2026 | 2026 | Break-up | 42.87074 | -84.903084 | - | PORM4 | released | Basement flooding near the river was reported but residents noted no significant damages ("not like 2019"). | A (presumed) break-up jam formed in downtown Portland, MI, between the Bridge St and Grand River Ave Bridges. |
| 20260106143702 | Boone | IA | Des Moines River | 01/02/2026 | 2026 | Freeze-up | 41.991425 | -93.894326 | - | - | released | Lowland flooding reported; roads within park expected to be impacted if jam holds (c 1/5) | Ice jam reported near the boat ramp at Ledges State Park on the Des Moines River. |
| 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. |
| 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. |
| 20260106150417 | Maskell | NE | MIssouri River | 12/29/2025 | 2026 | Freeze-up | 42.761227 | -97.065116 | - | - | not flooding | No flooding reported. | Ice jam reported by USACE Reservoir Regulation downstream of Gavins Point Dam near Maskell. |
| 20251230144448 | Soldotna | AK | Kenai River | 12/16/2025 | 2026 | Freeze-up | 60.476187 | -151.076733 | - | - | not flooding | No flooding reported. | Freeze-up jam on the Kenai River above the Soldotna bridge. Released on Dec 17; jumbled pack ice remains in place between Soldotna and Big Eddy. |
| 20260107150920 | Shelby | IN | Kankakee River | 12/15/2025 | 2026 | Freeze-up | 41.182372 | -87.346301 | - | SLBI3 | released | No flooding reported. | Jam reported on the Rock River near Shelby, IN. Released c 19 December. |
| 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. |
| 20260107145635 | Afton | WI | Rock River | 12/14/2025 | 2026 | Freeze-up | 42.603217 | -89.055839 | - | AFTW3 | released | No flooding reported. | Jam reported on the Rock River near Afton. Released c 17 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. |