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Index numberCityStateRiverJam dateWater yearJam typeLatitudeLongitudeGage numberAhps idCurrent conditionDamagesDescription
20260107150621ComoILRock River12/14/20262026Freeze-up41.756397-89.772311-CMOI2releasedNo flooding reported.Jam reported on the Rock River near Como, IL. Jam shifted/repositioned over about a week before releasing c 22 December.
20260203174645North ForkIDSalmon River01/28/20262026Break-up45.364524-113.954818--causing floodingLowland 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.
20260127174457NewportNYWest Canada Creek01/26/20262026Freeze-up43.19232-75.02317--causing floodingLocal 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.
20260131134335TrentonNJDelaware River01/25/20262026Freeze-up40.134898-74.744394-tren4not floodingNo 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.
20260203173535LemhiIDLemhi River01/24/20262026Break-up44.876992-113.626028--not floodingLemhi 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.
20260127144009ColumbusNEPlatte River01/23/20262026Freeze-up41.400089-97.305964--not floodingMinor flooding in low-lying areas reported.Freeze-up jam reported near the confluence of the Platte and Loup Rivers outside Columbus.
20260127192339Aroma ParkILKankakee River01/22/20262026Freeze-up41.078056-87.817796--not floodingNo flooding reported.Freeze-up jam formed on the Kankakee River near it's confluence with the Iroquois River near Aroma Park.
20260127192140KankakeeILKankakee River01/22/20262026Freeze-up41.208004-88.016148--not floodingMinor lowland flooding reported. Deemed 'not impactful'.Freeze-up jam formed on the Kankakee River near the Will County line.
20260123143417AylesworthINKankakee River01/21/20262026Freeze-up41.2813-87.103409--not floodingNo flooding reported.Freeze-up jam near Aylesworth, IN.
20260127191610MomenceILKankakee River01/20/20262026Freeze-up41.160214-87.665708--not floodingNo flooding reported.Freeze-up jam formed on the Kankakee River near Momence.
20260127190627West DundeeILFox River01/19/20262026Freeze-up42.098699-88.276425--not floodingNo flooding reported. Jam remains in place with little backwater effect.Freeze-up jam formed on the Fox River near East/West Dundee.
20260127191656RocktonILRock River01/19/20262026Freeze-up42.461025-89.086822--not floodingNo flooding reported.Freeze-up jam formed on the Rock River near Rockton.
20260127191049ShelbyINKankakee River01/19/20262026Freeze-up41.18231-87.346583--not floodingNo flooding reported.Freeze-up jam formed on the Kankakee River near Shelby.
20260127191237Cherry ValleyILKishwaukee River01/19/20262026Freeze-up42.236559-88.954091--not floodingNo flooding reported.Freeze-up jam formed on the Kishwaukee River near Perryville/Cherry Valley.
20260127190117Des PlainesILDes Plaines River01/18/20262026Freeze-up42.049951-87.873006--not floodingNo flooding reported. Jam remains in place with little backwater effect.Freeze-up jam formed on the Des Plaines River near Des Plaines.
20260127190252LyonsILDes Plaines River01/18/20262026Freeze-up41.825404-87.820063--not floodingNo flooding reported. Jam remains in place with little backwater effect.Freeze-up jam formed on the Des Plaines River near Lyons.
20260127191819Latham ParkILRock River01/18/20262026Freeze-up42.355411-89.056946--not floodingNo flooding reported.Freeze-up jam formed on the Rock River near Latham/Machesney Park.
20260127190456LemontILDes Plaines River01/17/20262026Freeze-up41.676397-88.019907--not floodingNo flooding reported. Jam remains in place with little backwater effect.Freeze-up jam formed on the Des Plaines River near Lemont.
20260120164142MaskellNEMIssouri River01/17/20262026Freeze-up42.72863-96.887465-MRPN1not floodingNo flooding was reported.Missouri River Reservoir Regulation reported an ice jam formed between Ponca and Maskell on 17 January.
20260120155913ClevelandILRock River01/17/20262026Freeze-up41.485319-90.373046-JOSI2not floodingMinor 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.
20260113142844PortlandMIGrand River01/07/20262026Break-up42.87074-84.903084-PORM4releasedBasement 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.
20260106143702BooneIADes Moines River01/02/20262026Freeze-up41.991425-93.894326--releasedLowland 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.
20260127190833OswegoILFox River01/02/20262026Freeze-up41.682186-88.360101--not floodingMinor lowland flooding reported.Freeze-up jam formed on the Fox River near Oswego.
20260106144344MolineILRock River01/02/20262026Freeze-up41.460831-90.502032-MLII2not floodingStage 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.
20260106150417MaskellNEMIssouri River12/29/20252026Freeze-up42.761227-97.065116--not floodingNo flooding reported.Ice jam reported by USACE Reservoir Regulation downstream of Gavins Point Dam near Maskell.
20251230144448SoldotnaAKKenai River12/16/20252026Freeze-up60.476187-151.076733--not floodingNo 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.
20260107150920ShelbyINKankakee River12/15/20252026Freeze-up41.182372-87.346301-SLBI3releasedNo flooding reported.Jam reported on the Rock River near Shelby, IN. Released c 19 December.
20260107151138MomenceILKankakee River12/15/20252026Freeze-up41.164674-87.651374-MOMI2releasedNo flooding reported.Jam reported on the Rock River near Momence, IL. Released c 21 December.
20260107145635AftonWIRock River12/14/20252026Freeze-up42.603217-89.055839-AFTW3releasedNo flooding reported.Jam reported on the Rock River near Afton. Released c 17 December.
20260107150054ByronILRock River12/04/20252026Freeze-up42.125655-89.232657-BYRI2releasedNo flooding reported.Jam reported on the Rock River near Byron, IL. Released c 14 December.