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Flood — Inland Kuskokwim Delta, Alaska

October 11, 2025 · NOAA Storm Events record

Direct deaths

Direct injuries

Property damage

$10.0M

Area

Inland Kuskokwim Delta

Event narrative (NOAA)

This flooding was caused by storm surge moving upriver in the intertidal zone, not by runoff from heavy rainfall. Flooding extended from Napakiak northeast to Bethel. River levels in Bethel reached 9.5 ft at 3:00 PM AKDT as recorded by the local gauge datum before it experienced an outage. After the event, a high water mark survey by the Division of Geological and Geophysical Surveys (DGGS) estimated the crest at 11.01 ft. Bethel saw a barge strike the Brown Slough Bridge. The Alaska State Emergency Operations Center (SEOC) reported no obvious structural damage was observed but Bridge is closed pending an inspection. The barge was carrying 400 gallons of fuel, but no spill was observed. Images from social media showed Bridge Avenue, as well as 6th and 7th Avenue flooded. Napakiak experienc

Other notable flood events in Alaska

Susitna Valley · September 19, 20121 killed Nern P.W. Snd · October 9, 2006$26.5M Susitna Valley · August 18, 2006$20.0M Central Beaufort Sea Coast · May 20, 2015$15.5M Lower Koyukuk Middle Ykn Vlys · May 27, 2013$15.0M Copper River Basin · October 10, 2006$10.0M

Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.