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South Fork Skykomish River at Skykomish

Highest listed crest 29.91 ftFlood stage 27.5 ft5 crests since 2015

The South Fork Skykomish River at Skykomish crested above flood stage 2 times among the 5 crests the National Weather Service lists from 2015 to 2025. The highest, 29.91 ft on November 17, 2015, was moderate flooding, 2.41 feet above flood stage.

The gauge

Highest listed crest
29.91 ft
November 17, 2015
Flood stage
27.5 ft
Major flooding from 30.0 ft
Crests at major
0
2 above flood stage
Most recent flood crest
December 11, 2025
29.59 ft, moderate flooding
Location
King County
Washington

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, South Fork Skykomish River at Skykomish
Action stage26.01Feb 1, 2020The level at which the NWS or its partners begin to take action
Flood stage (minor)27.50—Minimal or no property damage, but possibly some public threat
Moderate flood stage29.02Dec 11, 2025Some inundation of structures and roads near the stream
Major flood stage30.00—Extensive inundation of structures and roads

Every listed crest

5 crests from 2015 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the South Fork Skykomish River at Skykomish, 2015 to 2025 252627282930ft Flood stage 27.5 ftMajor 30.0 ft Nov 17, 2015: 29.91 ft, moderate floodingFeb 15, 2016: 25.51 ft, below flood stageNov 23, 2017: 25.90 ft, below flood stage; 19,100 cubic feet per secondFeb 1, 2020: 26.19 ft, action stage; 20,400 cubic feet per secondDec 11, 2025: 29.59 ft, moderate flooding; 31,137 cubic feet per second Highest, 29.91 ft, Nov 17, 2015 201520202025

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, South Fork Skykomish River at Skykomish 2010s: 1 1 2020s: 1 2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, South Fork Skykomish River at Skykomish
1Nov 17, 201529.91+2.41Moderate—
2Dec 11, 202529.59+2.09Moderate31,137
3Feb 1, 202026.19−1.31Action20,400
4Nov 23, 201725.90−1.60Below flood stage19,100
5Feb 15, 201625.51−1.99Below flood stage—

Other gauges in King County

Flood gauges in King County
Renton13.017.13 ft, Nov 24, 19904
Landsburg5.713.55 ft, Dec 29, 191713
Carnation54.062.21 ft, Jan 8, 200931
Carnation - Discharge54.062.21 ft, Jan 7, 200928

King County: every hazard · River floods across the country · Washington

NOAA National Water Prediction Service, gauge SSSW1, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.