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Wynoochee River near Montesano

Highest listed crest 45.02 ftFlood stage 42.5 ft31 crests since 1956

The Wynoochee River near Montesano crested at major flood stage 1 time among the 31 crests the National Weather Service lists from 1956 to 2015. The highest, 45.02 ft on December 10, 1956, was major flooding, 2.52 feet above flood stage.

The gauge

Highest listed crest
45.02 ft
December 10, 1956; 24,500 cubic feet per second
Flood stage
42.5 ft
Major flooding from 44.5 ft
Crests at major
1
43rd of 70 gauges in Washington
Most recent flood crest
December 10, 1956
45.02 ft, major flooding
Location
Grays Harbor County
Near Aberdeen (7.8 mi)

Flood stages

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

Flood categories, Wynoochee River near Montesano
Action stage39.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)42.50—Minimal or no property damage, but possibly some public threat
Moderate flood stage43.50—Some inundation of structures and roads near the stream
Major flood stage44.51Dec 10, 1956Extensive inundation of structures and roads

Every listed crest

31 crests from 1956 to 2015. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Wynoochee River near Montesano, 1956 to 2015 01020304050ft Flood stage 42.5 ftMajor 44.5 ft Dec 10, 1956: 45.02 ft, major flooding; 24,500 cubic feet per secondApr 30, 1959: 18.13 ft, below flood stage; 18,400 cubic feet per secondNov 20, 1959: 19.57 ft, below flood stage; 21,900 cubic feet per secondJan 16, 1961: 20.12 ft, below flood stage; 23,300 cubic feet per secondFeb 21, 1961: 19.26 ft, below flood stage; 21,200 cubic feet per secondNov 20, 1962: 20.06 ft, below flood stage; 23,200 cubic feet per secondDec 13, 1966: 19.20 ft, below flood stage; 21,500 cubic feet per secondJan 19, 1968: 20.19 ft, below flood stage; 25,500 cubic feet per secondNov 23, 1986: 16.86 ft, below flood stage; 18,900 cubic feet per secondNov 24, 1990: 18.16 ft, below flood stage; 21,500 cubic feet per secondDec 10, 1993: 17.75 ft, below flood stage; 20,700 cubic feet per secondDec 19, 1994: 16.46 ft, below flood stage; 18,300 cubic feet per secondMar 19, 1997: 20.21 ft, below flood stage; 25,600 cubic feet per secondOct 30, 1997: 12.48 ft, below flood stage; 11,500 cubic feet per secondDec 28, 1998: 15.79 ft, below flood stage; 17,100 cubic feet per secondDec 15, 1999: 19.93 ft, below flood stage; 25,100 cubic feet per secondJan 5, 2001: 7.57 ft, below flood stage; 4,500 cubic feet per secondDec 17, 2001: 14.89 ft, below flood stage; 14,300 cubic feet per secondMar 14, 2003: 12.95 ft, below flood stage; 10,900 cubic feet per secondOct 20, 2003: 15.87 ft, below flood stage; 15,400 cubic feet per secondJan 18, 2005: 16.16 ft, below flood stage; 15,900 cubic feet per secondDec 24, 2005: 14.81 ft, below flood stage; 13,700 cubic feet per secondNov 6, 2006: 18.65 ft, below flood stage; 20,100 cubic feet per secondDec 3, 2007: 13.73 ft, below flood stage; 12,000 cubic feet per secondJan 7, 2009: 20.11 ft, below flood stage; 22,700 cubic feet per secondNov 20, 2009: 16.68 ft, below flood stage; 16,700 cubic feet per secondDec 12, 2010: 15.90 ft, below flood stage; 15,400 cubic feet per secondNov 23, 2011: 10.81 ft, below flood stage; 7,880 cubic feet per secondNov 19, 2012: 13.40 ft, below flood stage; 11,500 cubic feet per secondMar 6, 2014: 13.85 ft, below flood stage; 12,200 cubic feet per secondJan 5, 2015: 16.18 ft, below flood stage; 15,900 cubic feet per second Highest, 45.02 ft, Dec 10, 1956 196019701980199020002010

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Wynoochee River near Montesano 1950s: 1 1 1960s: 0 1970s: 0 1980s: 0 1990s: 0 2000s: 0 2010s: 0 1950s1960s1970s1980s1990s2000s2010s
  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, Wynoochee River near Montesano
1Dec 10, 195645.02+2.52Major24,500
2Mar 19, 199720.21−22.29Below flood stage25,600
3Jan 19, 196820.19−22.31Below flood stage25,500
4Jan 16, 196120.12−22.38Below flood stage23,300
5Jan 7, 200920.11−22.39Below flood stage22,700
6Nov 20, 196220.06−22.44Below flood stage23,200
7Dec 15, 199919.93−22.57Below flood stage25,100
8Nov 20, 195919.57−22.93Below flood stage21,900
9Feb 21, 196119.26−23.24Below flood stage21,200
10Dec 13, 196619.20−23.30Below flood stage21,500
11Nov 6, 200618.65−23.85Below flood stage20,100
12Nov 24, 199018.16−24.34Below flood stage21,500
13Apr 30, 195918.13−24.37Below flood stage18,400
14Dec 10, 199317.75−24.75Below flood stage20,700
15Nov 23, 198616.86−25.64Below flood stage18,900
16Nov 20, 200916.68−25.82Below flood stage16,700
17Dec 19, 199416.46−26.04Below flood stage18,300
18Jan 5, 201516.18−26.32Below flood stage15,900
19Jan 18, 200516.16−26.34Below flood stage15,900
20Dec 12, 201015.90−26.60Below flood stage15,400
21Oct 20, 200315.87−26.63Below flood stage15,400
22Dec 28, 199815.79−26.71Below flood stage17,100
23Dec 17, 200114.89−27.61Below flood stage14,300
24Dec 24, 200514.81−27.69Below flood stage13,700
25Mar 6, 201413.85−28.65Below flood stage12,200
26Dec 3, 200713.73−28.77Below flood stage12,000
27Nov 19, 201213.40−29.10Below flood stage11,500
28Mar 14, 200312.95−29.55Below flood stage10,900
29Oct 30, 199712.48−30.02Below flood stage11,500
30Nov 23, 201110.81−31.69Below flood stage7,880
31Jan 5, 20017.57−34.93Below flood stage4,500

Other gauges in Grays Harbor County

Flood gauges in Grays Harbor County
Porter48.053.17 ft, Dec 5, 20072
Satsop38.042.79 ft, Jan 22, 19351

Grays Harbor County: every hazard · River floods across the country · Washington

NOAA National Water Prediction Service, gauge MNSW1, 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.