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Index numberCityStateRiverJam dateWater yearJam typeLatitudeLongitudeGage numberAhps idCurrent conditionDamagesDescription
20250122143339ShorewoodILDu Page River01/20/20252025Freeze-up41.523045-88.192146--releasedNo flooding reported.Ice jam near Shorewood, IL, on the DuPage River, reported by Scott Lincoln, NOAA.
20250122142612ComoILRock River01/20/20252025Freeze-up41.75791-89.789887--releasedNo flooding reported.Ice jam near Como, IL, on the Rock River, reported by Scott Lincoln, NOAA.
20250121145609MomenceILKankakee River01/20/20252025Freeze-up41.15718-87.69003-momi2releasedMinor flooding was reported.Freeze-up jam on the Kankakee River near Momence. A flood warning was issued for the region between the IL/ID state line and Aroma Park, and the Momence gauge passed flood stage on 20 Jan.
20250108164353DixonILRock River01/06/20252025Break-up41.846463-89.48139--releasedNo flooding was reported.Small jam reported by Scott Lincoln (NOAA).
20250108173938RockfordILRock River01/06/20252025Break-up42.122585-89.255202--releasedNo flooding was reported.Small jam reported by Scott Lincoln (NOAA).
20250108174136RoscoeILRock River01/06/20252025Break-up42.411743-89.016672--releasedNo flooding was reported.Small jam reported by Scott Lincoln (NOAA).
20240201163058East MolineILRock River01/30/20242024Break-up41.50869-90.35046-MLII2releasedMinor flooding reported.Jam occurred near Lundeen Landing, East Moline, on the Rock River.
20240130153735Grand DetourILRock River01/28/20242024Break-up41.884376-89.473016--releasedMinor flooding in Grand Detour was reported.Ice jam reported by a NWS river spotter near Lowell Park, downstream of Grand Detour, IL, on the Rock River.
20240126104757OakfordILSangamon River01/25/20242024Break-up40.12252-89.985388--releasedMinor flooding was reported. River expected to crest at 18 ft.Ice jam reported on the Sangamon River near the Oakford Bridge. Flood warnings extend down stream to the confluence with the Illinois River.
20240129002312ChandlervilleILSangamon River01/25/20242024Break-up40.0646-90.15229--releasedModerate flooding reported.Ice jam occurred near Chandlerville, IL, on the Sangamon River.
20240129000002OttawaILFox River01/24/20242024Break-up41.343229-88.840682-otwi2releasedMinor flooding was reported in Ottawa and Dayton.Ice jam formed on Fox River near the confluence with the Illinois River near Ottawa, IL.
20240126105755WilmingtonILKankakee01/23/20242024Break-up41.285361-88.150909--releasedMajor flooding in Wilmington.Ice jam formed near Wilmington, IL, on the Kankakee River. This seems to be upstream of the Phelan Acres/Bardwell Island Jam and likely upstream of Wilmington near Custer Park. Jam released 25 January causing major flooding in Wilmington. Broke up on 26 January.
20240123162704KankakeeILKankakee River01/20/20242024Freeze-up41.07444-87.8057-momi2releasedMinor flooding was reported.Jam reported near Aroma Park on the Kankakee River near Kankakee. This could be backed up ice from jam(s) downstream at Kankakee or a distinct jam (likely at the bridge just upstream of the Iroquois River confluence). Flood watch lifted on 24 January (jam presumed released at this time).
20240123162844KankakeeILKankakee River01/20/20242024Freeze-up41.119777-87.750537-momi2releasedMinor flooding was reported.Jam reported near Sun River Terrace on the Kankakee River near Kankakee. This could be backed up ice from jam(s) downstream at Kankakee and/or Aroma Park or a distinct jam (likely at the 500N Rd Bridge at Sun River Terrace). Flood watch lifted on 24 January (jam presumed released at this time).
20240131162225BeardstownILIllinois River01/18/20242024Break-up39.940733-90.533103-NLGI2releasedWidespread minor to moderate flooding along the Illinois from Beardstown up to Havana. There may be more jams in this area that can be inferred from satellite imagery, but reports from the ground have been scant.Tentative reports of jamming near Beardstown between 18 Jan and 39 Jan. Satellite imagery suggests an initial break-up jam formed near the LaGrange Lock and Dam around 17 January as well as immediately downstream of Beardstown. There's significant movement in the next couple days, but it seems pretty in-place by 18 January, located near the dam. Based on Planet imagery, this jam released some time between 31 Jan and 6 Feb. Moderate flooding continues between Havana and Beardstown (c 6 Feb)
20240123160354KankakeeILKankakee River01/16/20242024Freeze-up41.1126-87.86498-momi2releasedMinor flooding was reported.Flood watch associated with an ice jam issued for Aroma Park; satellite imagery suggests the jam is closer to the bridge at Kankakee. Flood watch lifted on 24 January (jam presumed released at this time).
20240123204037OttawaILIllinois River01/15/20242024Freeze-up41.3222-88.98548--releasedMinor flooding was reported.Ice jam near Starved Rock Lock and Dam on the Illinois River, near Ottawa, IL.
20240116133926WilmingtonILKankakee River01/15/20242024Freeze-up41.358398-88.224723-WLMI2releasedMajor flooding likely as indicated by USGS gage.A freeze-up jam occurred on the Kankakee River downstream of Wilmington near Bardwell Island. Broke up on 26 January.
20230103184726Rock IslandILRock River01/02/20232023Freeze-up41.47811-90.60803--releasedFlooding reported near East Moline. Flood warning ended but flooding is expected to continue.Various reports of flooding between Rock/Mississippi confluence and Joslin. Satellite imagery suggests jam is near confluence or thereabouts but location is approximate.
20221223202408DixonILRock River12/23/20222023Freeze-up41.84557774-89.48361483dxri2dxri2releasedNone reportedFreezeup jam partially arrested by intact ice downstream of Dixon Dam in vicinity of RT 52 Bridge. Documented by video on Facebook: https://www.facebook.com/bill.manon/videos/889261092432697/ Gage at Peoria Ave (dxri2) showed several feet of rise on Thursday (22 DEC) followed by sharp drop of 5+ feet around midnight, which may be indication of jam formation upstream.
20221227162409ComoILRock River12/23/20222023Freeze-up41.769712-89.747485-CMOI2releasedNo flooding has been reported.Extensive freeze-up jamming along Rock River between Como (downstream) and Janesville (upstream). AHPS gages show distinctive signature of ice jamming at all gages along this reach and satellite (Planet) imagery confirms presence of intermittent ice cover long this reach. Flood advisories have been announced (from upstream) for Rockton, Latham Park, and Byron, WI. No flooding has been reported. Location is approximate (below the Como Gage).
20220301180741DaytonILFox River02/22/20222022Unknown41.384444-88.789167-DAYI2releasedMinor flooding was reported.Ice jam occurred on the Fox River near Dayton, IL. Minor flooding of the Fox River Park was reported. The jam released as of 23 Feb.
20220222181847Channahon TownshipILDes Plaines River02/20/20222022Unknown41.412146-88.215016--releasedNo flooding reported.337 WGUS63 KLOT 201648 FFALOT URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Servi_c_e Chicago IL 1048 AM CST Sun Feb 20 2022 ILZ021-107-211800- /O.EXT.KLOT.FF.A.0001.000000T0000Z-220221T1800Z/ /00000.0.IJ.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Grundy-Southern Will- Including the cities of Channahon, Wilmington, Minooka, Morris, Coal City, and Manhattan 1048 AM CST Sun Feb 20 2022 ...FLASH FLOOD WATCH FOR AN ICE JAM NOW IN EFFECT THROUGH MONDAY MORNING... * WHAT...Flooding caused by an ice jam continues to be possible. * WHERE...A portion of northeast Illinois, including the following areas, Grundy and Southern Will. * WHEN...Through Monday morning. * IMPACTS...Localized flooding of low lying areas and property along the river may occur upstream and downstream of the ice jam. Rapid water level fluctuations may occur due to heavy ice cover on the river. * ADDITIONAL DETAILS... - River gauge observations continue to indicate heavy river ice and ice jamming just downstream of I-55. Rapid water level fluctuations may continue over the next few days while the ice jam remains in place. Flooding may occur upstream if the jam worsens or downstream if the jam breaks up. Flooding may occur with little notice. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Doom
20220217213719WilmingtonILKankakee River02/17/20222022Break-up41.346667-88.186389-WLMI2releasedModerate flooding reported as of 17 February. Flood warning is in effect and stage is nearing Major threshold.An ice jam occurred on the Kankakee River near Wilmington, IL. Moderate flooding is reported.
20220112012919MomenceILKankakee River01/11/20222022Freeze-up41.16-87.668611-MOMI2releasedNo flooding reported.An ice jam occurred along the Kankakee River in Momence, IL. No flooding was reported.
20220112012522WilmingtonILKankakee River01/08/20222022Freeze-up41.346667-88.186389-WLMI2releasedNo flooding reported.An ice jam occurred along the Kankakee River in Wilmington, IL, near the I-55 Bridge. River stages rose to the minor flood level, but no damages were reported.
20210129203338Latham ParkILRock River01/29/20212021Freeze-up42.368611-89.058333-LATI2released-An ice jam, likely a freeze-up jam, was reported from observations of the stream gage data on the Rock River at Latham Park, IL.
20200219185651ByronILRock River02/14/20202020Freeze-up42.123056-89.255833-BYRI2released--
20200121215756DaytonILFox River01/19/20202020Freeze-up41.383889-88.789722-DAYI2released--
20200121215334DixonILRock River01/19/20202020Freeze-up41.844722-89.486111-DXRI2released--
20190312204823ClevelandILRock River03/10/20192019Break-up----Unknown-An ice jam developed Sunday, 10 Mar 2019, evening, between the Interstate 80 bridge and Cleveland, IL. Gage upstream at Joslin, IL showed moderate flooding.
20190312204255DaytonILFox River03/06/20192019Freeze-up---DAYI2Not Flooding--
20190226160805ProphetstownILRock River02/24/20192019Unknown----Causing Flooding--
20190205221339StreatorILVermilion River02/05/20192019Break-up41.19311389-88.90340556--Unknown--
20190205214744RiversideILDes Plaines River02/04/20192019Break-up41.821667-87.821944--Not Flooding--
20190205214645KoutsILKankakee River02/04/20192019Break-up41.253889-87.033889--Not Flooding--
20190205214441OttawaILIllinois River02/04/20192019Break-up41.344444-88.839167--Not Flooding--
20190205221201NapervilleILDu Page River02/04/20192019Break-up41.76931111-88.14691111--Released--
20190205214843ByronILRock River02/01/20192019Freeze-up42.123056-89.255833--Not Flooding--
20190205214546RocktonILRock River01/30/20192019Freeze-up42.450278-89.0725--Not Flooding--
20190129205716OswegoILFox River01/28/20192019Freeze-up41.68517222-88.35634444--Causing Flooding--
20190129210057WilmingtonILKankakee River01/26/20192019Freeze-up41.34666667-88.18638889--Causing Flooding--
20190129210938JoslinILRock River01/26/20192019Freeze-up41.556111-90.185278--Not Flooding--
20190129210826Latham ParkILRock River01/26/20192019Freeze-up42.368611-89.058333--Not Flooding--
20190129210257MomenceILKankakee River01/26/20192019Freeze-up41.16-87.668611--Causing Flooding--
20190129210612MolineILRock River01/25/20192019Freeze-up41.4625-90.5--Not Flooding--
20190122175551DixonILRock River01/22/20192019Freeze-up41.84481389-89.48668333-DXRI2Not Flooding--
20180222171907ProphetstownILRock River02/21/20182018Break-up41.67675621-89.9797410311440000JOSI2Released--
20180206124621ByronILRock River02/05/20182018Unknown42.12195931-89.2561034704265432BYRI2Released--
20180206124007DixonILRock River02/04/20182018Unknown41.84467735-89.4878443811440000DXRI2Released--