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Index numberCityStateRiverJam dateWater yearJam typeLatitudeLongitudeGage numberAhps idCurrent conditionDamagesDescription
20260519145908Russian MissionAKYukon River05/17/20262026Break-up61.63166-161.43069--causing floodingWater rising rapidly; lower town has evacuated to higher ground c. 18 May. A flood warning is in effect.Break-up jams reported above and below Russian Mission. Location inferred because of significant cloud cover.
20260519150641Holy CrossAKYukon River05/16/20262026Break-up62.16113-159.73646--causing floodingModerate flooding was reported. A flood warning has been issued. Runway affected by flooding, and one house has been evacuated.Break-up front stalled on the Yukon River near Holy Cross, AK, causing flooding from nearby Walker Slough.
20260519145357BucklandAKBuckland River05/15/20262026Break-up65.9557-161.11767--releasedFlooding reported in nearby roads, including road to gravel pit. Reports that lakes are already full, and water is rising.Buckland River jammed upstream of Buckland. Jam released 16 May.
20260519144519TuluksakAKKuskokwim River05/13/20262026Break-up61.113138-160.975323--releasedNo flooding was reported. Jam broke on 14 May.Break-up jam formed near Tuluksak.
20260519144023RubyAKYukon River05/12/20262026Break-up64.72162-156.13538--releasedSignificant flooding in lowlands and woods around Ruby reported but no damage to residences yet.Break-up jam downstream of Ruby extending some 30 miles upstream. Released 14 May.
20260519142719BethelAKKuskokwim River05/12/20262026Break-up60.6726-161.7319--causing floodingMinor flooding reported in Bethel, Napakiak, and Napaskiak.Break-up jam near Tim Alexi's island between Bethel and Napakiak.
20260512165014McGrathAKKuskokwim River05/10/20262026Break-up62.92791-155.5859--releasedMinor flooding is affecting the south end of the runway causing road closure and forcing DOT to turn off the runway lights in that area.A break-up jam formed just downstream of McGrath, AK.
20260512164153HughesAKKoyukuk River05/09/20262026Break-up66.02854-154.26929--releasedWidespread flooding, exacerbated on 10 May by heavy flows from upstream that may have dislodged part of the jam but worsened the flooding.A break-up jam formed near Hughes, AK, on the Koyukuk River. Released on 12 May.
20260512161533AniakAKKuskokwim River05/07/20262026Break-up61.58664-159.85593--releasedFlooding in the woods above the jam, though river is reportedly passing most of its flow. Some concern for Aniak if a run comes from upstream.A break-up jam formed near Birch Crossing, a notably narrow, shallow section of the Kuskokwim River ~12 miles downstream of Aniak.
20260512152813ChalkyitsikAKDraanjik River05/06/20262026Break-up66.69888-143.96296--releasedFlooding reported in several homes in Chalkyitsik.Break-up jam formed just downstream of Chalkyitsik, AK. Jam seems to have released by 5/11 and flood waters have begun to recede.
20260512144034Fort YukonAKDraanjik River05/05/20262026Break-up66.65947-144.72551--releasedLowland flooding was reported and a warning was issued.Break-up jam formed near the confluence of the Draanjik and Porcupine Rivers near Fort Yukon.
20260505165529BadgerAKChena River05/04/20262026Break-up64.846748-147.410981--releasedNone reported.Break-up jam near Nordale Road Bridge on the Chena River. Riverwatch reports it broke up later the same day (5/4).
20260210194053South LakesAKWasilla Creek01/26/20262026Freeze-up61.580542-149.272058--releasedMinor flooding reported including overtopping several nearby roads, Tiffany Drive and Lower Rd. Local EM says it "happens every year" and won't stop until the river and jam melt out.Freeze-up jam formed on Wasilla Creek, reported exacerbated by a beaver dam. Road crews are grading nearby roads daily to keep them ice free.
20251230144448SoldotnaAKKenai River12/16/20252026Freeze-up60.476187-151.076733--releasedNo 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.