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Chehalis River near Grand Mound

Highest listed crest 147.26 ftFlood stage 141.0 ft176 crests since 1931

The Chehalis River near Grand Mound crested at major flood stage 2 times among the 176 crests the National Weather Service lists from 1931 to 2025. The highest, 147.26 ft on December 4, 2007, was major flooding, 6.26 feet above flood stage. 3 other gauges on the Chehalis River crested above flood stage within a week of it, 3 at their own highest listed crest.

The gauge

Highest listed crest
147.26 ft
December 4, 2007; 79,100 cubic feet per second
Flood stage
141.0 ft
Major flooding from 144.0 ft
Crests at major
2
36th of 70 gauges in Washington
Most recent flood crest
December 11, 2025
143.27 ft, moderate flooding
Location
Thurston County
Near Centralia (4.8 mi)

Flood stages

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

Flood categories, Chehalis River near Grand Mound
Action stage138.51Jan 28, 2024The level at which the NWS or its partners begin to take action
Flood stage (minor)141.03Dec 7, 2023Minimal or no property damage, but possibly some public threat
Moderate flood stage142.55Dec 11, 2025Some inundation of structures and roads near the stream
Major flood stage144.02Jan 7, 2022Extensive inundation of structures and roads

Every listed crest

176 crests from 1931 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Chehalis River near Grand Mound, 1931 to 2025 050100150ft Flood stage 141.0 ftMajor 144.0 ft Apr 1, 1931: 10.39 ft, below flood stage; 19,400 cubic feet per secondFeb 27, 1932: 11.29 ft, below flood stage; 23,500 cubic feet per secondMar 7, 1932: 10.70 ft, below flood stage; 20,900 cubic feet per secondNov 14, 1932: 11.50 ft, below flood stage; 24,400 cubic feet per secondDec 3, 1932: 11.55 ft, below flood stage; 24,900 cubic feet per secondJan 9, 1933: 11.00 ft, below flood stage; 22,100 cubic feet per secondDec 2, 1933: 12.70 ft, below flood stage; 30,700 cubic feet per secondDec 11, 1933: 14.30 ft, below flood stage; 40,800 cubic feet per secondDec 21, 1933: 15.00 ft, below flood stage; 45,700 cubic feet per secondJan 23, 1934: 11.70 ft, below flood stage; 25,400 cubic feet per secondNov 7, 1934: 16.13 ft, below flood stage; 32,600 cubic feet per secondJan 23, 1935: 17.08 ft, below flood stage; 38,000 cubic feet per secondJan 5, 1936: 13.45 ft, below flood stage; 20,800 cubic feet per secondJan 15, 1936: 16.77 ft, below flood stage; 36,300 cubic feet per secondFeb 28, 1936: 15.68 ft, below flood stage; 30,700 cubic feet per secondApr 15, 1937: 14.33 ft, below flood stage; 24,300 cubic feet per secondDec 29, 1937: 18.39 ft, below flood stage; 48,400 cubic feet per secondFeb 16, 1939: 14.39 ft, below flood stage; 24,800 cubic feet per secondDec 17, 1939: 13.90 ft, below flood stage; 22,700 cubic feet per secondDec 20, 1941: 15.30 ft, below flood stage; 26,900 cubic feet per secondFeb 7, 1943: 13.23 ft, below flood stage; 20,200 cubic feet per secondFeb 9, 1945: 15.29 ft, below flood stage; 27,000 cubic feet per secondMar 21, 1945: 13.48 ft, below flood stage; 20,200 cubic feet per secondDec 30, 1945: 14.33 ft, below flood stage; 23,100 cubic feet per secondFeb 7, 1946: 13.50 ft, below flood stage; 20,200 cubic feet per secondDec 12, 1946: 13.98 ft, below flood stage; 22,000 cubic feet per secondJan 26, 1947: 14.57 ft, below flood stage; 24,200 cubic feet per secondFeb 3, 1947: 14.35 ft, below flood stage; 24,100 cubic feet per secondJan 3, 1948: 13.57 ft, below flood stage; 20,000 cubic feet per secondMar 23, 1948: 13.32 ft, below flood stage; 19,600 cubic feet per secondDec 3, 1948: 14.22 ft, below flood stage; 23,400 cubic feet per secondDec 10, 1948: 14.56 ft, below flood stage; 25,300 cubic feet per secondFeb 18, 1949: 16.70 ft, below flood stage; 36,500 cubic feet per secondFeb 23, 1949: 16.62 ft, below flood stage; 36,500 cubic feet per secondNov 28, 1949: 13.42 ft, below flood stage; 19,600 cubic feet per secondDec 29, 1949: 14.79 ft, below flood stage; 24,200 cubic feet per secondJan 23, 1950: 14.64 ft, below flood stage; 23,500 cubic feet per secondFeb 26, 1950: 15.41 ft, below flood stage; 26,300 cubic feet per secondMar 6, 1950: 14.14 ft, below flood stage; 21,800 cubic feet per secondFeb 10, 1951: 16.96 ft, below flood stage; 38,000 cubic feet per secondJan 10, 1953: 13.69 ft, below flood stage; 20,500 cubic feet per secondDec 10, 1953: 15.63 ft, below flood stage; 29,000 cubic feet per secondJan 6, 1954: 16.53 ft, below flood stage; 34,700 cubic feet per secondFeb 14, 1954: 13.52 ft, below flood stage; 20,000 cubic feet per secondFeb 22, 1954: 14.79 ft, below flood stage; 24,700 cubic feet per secondNov 5, 1955: 13.69 ft, below flood stage; 19,900 cubic feet per secondNov 27, 1955: 14.76 ft, below flood stage; 24,000 cubic feet per secondDec 12, 1955: 15.64 ft, below flood stage; 28,700 cubic feet per secondDec 22, 1955: 16.58 ft, below flood stage; 35,100 cubic feet per secondJan 7, 1956: 14.55 ft, below flood stage; 23,100 cubic feet per secondDec 11, 1956: 13.57 ft, below flood stage; 19,700 cubic feet per secondFeb 27, 1957: 13.89 ft, below flood stage; 20,900 cubic feet per secondNov 13, 1958: 14.31 ft, below flood stage; 22,500 cubic feet per secondJan 25, 1959: 14.16 ft, below flood stage; 21,900 cubic feet per secondNov 24, 1959: 14.82 ft, below flood stage; 24,700 cubic feet per secondNov 21, 1960: 13.94 ft, below flood stage; 21,100 cubic feet per secondNov 25, 1960: 14.69 ft, below flood stage; 24,100 cubic feet per secondFeb 22, 1961: 15.29 ft, below flood stage; 27,000 cubic feet per secondNov 21, 1962: 15.78 ft, below flood stage; 29,800 cubic feet per secondNov 27, 1962: 15.68 ft, below flood stage; 29,200 cubic feet per secondFeb 4, 1963: 14.40 ft, below flood stage; 22,900 cubic feet per secondJan 20, 1964: 13.60 ft, below flood stage; 19,800 cubic feet per secondJan 26, 1964: 16.66 ft, below flood stage; 35,700 cubic feet per secondDec 2, 1964: 13.80 ft, below flood stage; 20,500 cubic feet per secondDec 24, 1964: 15.12 ft, below flood stage; 26,200 cubic feet per secondJan 30, 1965: 15.12 ft, below flood stage; 26,200 cubic feet per secondJan 7, 1966: 14.16 ft, below flood stage; 21,900 cubic feet per secondMar 10, 1966: 13.60 ft, below flood stage; 19,800 cubic feet per secondDec 14, 1966: 16.48 ft, below flood stage; 34,400 cubic feet per secondJan 21, 1967: 14.88 ft, below flood stage; 25,000 cubic feet per secondJan 29, 1967: 13.85 ft, below flood stage; 20,700 cubic feet per secondFeb 5, 1968: 14.83 ft, below flood stage; 24,800 cubic feet per secondJan 28, 1970: 14.62 ft, below flood stage; 23,300 cubic feet per secondDec 8, 1970: 16.07 ft, below flood stage; 31,500 cubic feet per secondJan 1, 1971: 14.27 ft, below flood stage; 22,400 cubic feet per secondJan 17, 1971: 14.83 ft, below flood stage; 26,800 cubic feet per secondJan 26, 1971: 17.29 ft, below flood stage; 40,800 cubic feet per secondMar 13, 1971: 14.17 ft, below flood stage; 22,000 cubic feet per secondJan 12, 1972: 14.02 ft, below flood stage; 21,300 cubic feet per secondJan 21, 1972: 18.21 ft, below flood stage; 49,200 cubic feet per secondMar 1, 1972: 14.20 ft, below flood stage; 21,600 cubic feet per secondMar 7, 1972: 15.33 ft, below flood stage; 26,700 cubic feet per secondDec 28, 1972: 14.27 ft, below flood stage; 21,900 cubic feet per secondJan 17, 1974: 16.88 ft, below flood stage; 37,400 cubic feet per secondFeb 2, 1974: 14.78 ft, below flood stage; 23,900 cubic feet per secondJan 15, 1975: 15.44 ft, below flood stage; 26,900 cubic feet per secondDec 5, 1975: 17.73 ft, below flood stage; 44,800 cubic feet per secondJan 16, 1976: 15.82 ft, below flood stage; 29,200 cubic feet per secondDec 3, 1977: 16.79 ft, below flood stage; 36,500 cubic feet per secondDec 15, 1977: 15.69 ft, below flood stage; 28,400 cubic feet per secondJan 13, 1980: 13.60 ft, below flood stage; 19,000 cubic feet per secondDec 27, 1980: 14.87 ft, below flood stage; 24,000 cubic feet per secondFeb 20, 1981: 14.47 ft, below flood stage; 22,300 cubic feet per secondDec 7, 1981: 14.41 ft, below flood stage; 22,000 cubic feet per secondJan 25, 1982: 15.50 ft, below flood stage; 27,300 cubic feet per secondFeb 17, 1982: 15.30 ft, below flood stage; 26,100 cubic feet per secondDec 5, 1982: 15.19 ft, below flood stage; 25,600 cubic feet per secondDec 18, 1982: 14.25 ft, below flood stage; 21,400 cubic feet per secondJan 8, 1983: 14.10 ft, below flood stage; 20,800 cubic feet per secondNov 19, 1983: 13.68 ft, below flood stage; 19,100 cubic feet per secondJan 26, 1984: 13.71 ft, below flood stage; 19,200 cubic feet per secondJan 20, 1986: 16.49 ft, below flood stage; 32,100 cubic feet per secondFeb 25, 1986: 15.40 ft, below flood stage; 25,300 cubic feet per secondNov 25, 1986: 18.41 ft, below flood stage; 51,600 cubic feet per secondFeb 2, 1987: 16.66 ft, below flood stage; 33,400 cubic feet per secondMar 4, 1987: 16.31 ft, below flood stage; 29,900 cubic feet per secondDec 5, 1989: 14.48 ft, below flood stage; 18,900 cubic feet per secondJan 10, 1990: 19.34 ft, below flood stage; 68,700 cubic feet per secondJan 30, 1990: 14.50 ft, below flood stage; 19,000 cubic feet per secondFeb 11, 1990: 17.46 ft, below flood stage; 40,700 cubic feet per secondNov 25, 1990: 18.12 ft, below flood stage; 48,000 cubic feet per secondApr 6, 1991: 17.66 ft, below flood stage; 42,800 cubic feet per secondJan 30, 1992: 14.63 ft, below flood stage; 19,600 cubic feet per secondDec 21, 1994: 16.97 ft, below flood stage; 35,900 cubic feet per secondDec 28, 1994: 15.95 ft, below flood stage; 28,500 cubic feet per secondFeb 20, 1995: 14.96 ft, below flood stage; 23,200 cubic feet per secondNov 30, 1995: 16.88 ft, below flood stage; 35,200 cubic feet per secondDec 15, 1995: 14.80 ft, below flood stage; 22,500 cubic feet per secondFeb 9, 1996: 19.98 ft, below flood stage; 74,800 cubic feet per secondApr 24, 1996: 16.42 ft, below flood stage; 31,600 cubic feet per secondDec 30, 1996: 17.29 ft, below flood stage; 38,700 cubic feet per secondMar 20, 1997: 14.94 ft, below flood stage; 23,100 cubic feet per secondJan 15, 1998: 14.53 ft, below flood stage; 21,400 cubic feet per secondNov 26, 1998: 17.04 ft, below flood stage; 36,500 cubic feet per secondDec 3, 1998: 15.12 ft, below flood stage; 23,900 cubic feet per secondDec 29, 1998: 15.20 ft, below flood stage; 24,200 cubic feet per secondJan 19, 1999: 14.50 ft, below flood stage; 21,300 cubic feet per secondJan 30, 1999: 15.13 ft, below flood stage; 23,900 cubic feet per secondFeb 8, 1999: 14.26 ft, below flood stage; 20,400 cubic feet per secondFeb 25, 1999: 16.85 ft, below flood stage; 34,900 cubic feet per secondDec 17, 1999: 16.34 ft, below flood stage; 31,000 cubic feet per secondDec 2, 2001: 14.01 ft, below flood stage; 21,300 cubic feet per secondDec 18, 2001: 16.33 ft, below flood stage; 31,900 cubic feet per secondJan 9, 2002: 14.51 ft, below flood stage; 23,000 cubic feet per secondJan 26, 2002: 14.54 ft, below flood stage; 23,100 cubic feet per secondFeb 1, 2003: 14.56 ft, below flood stage; 23,100 cubic feet per secondMar 23, 2003: 13.01 ft, below flood stage; 18,300 cubic feet per secondJan 31, 2004: 13.88 ft, below flood stage; 20,400 cubic feet per secondJan 19, 2005: 14.17 ft, below flood stage; 20,700 cubic feet per secondJan 12, 2006: 16.28 ft, below flood stage; 36,200 cubic feet per secondJan 31, 2006: 16.54 ft, below flood stage; 37,900 cubic feet per secondNov 8, 2006: 15.77 ft, below flood stage; 32,700 cubic feet per secondDec 16, 2006: 14.24 ft, below flood stage; 23,200 cubic feet per secondJan 8, 2007: 14.29 ft, below flood stage; 23,400 cubic feet per secondDec 4, 2007: 147.26 ft, major flooding; 79,100 cubic feet per secondJan 8, 2009: 18.18 ft, below flood stage; 50,700 cubic feet per secondNov 18, 2009: 13.04 ft, below flood stage; 19,400 cubic feet per secondDec 13, 2010: 14.20 ft, below flood stage; 23,800 cubic feet per secondJan 17, 2011: 14.24 ft, below flood stage; 23,900 cubic feet per secondMar 11, 2011: 14.04 ft, below flood stage; 23,100 cubic feet per secondNov 24, 2011: 13.89 ft, below flood stage; 22,500 cubic feet per secondJan 22, 2012: 13.58 ft, below flood stage; 21,300 cubic feet per secondMar 16, 2012: 14.39 ft, below flood stage; 24,500 cubic feet per secondMar 30, 2012: 13.95 ft, below flood stage; 22,700 cubic feet per secondNov 21, 2012: 14.95 ft, below flood stage; 27,000 cubic feet per secondDec 4, 2012: 14.17 ft, below flood stage; 23,647 cubic feet per secondOct 1, 2013: 13.28 ft, below flood stage; 20,200 cubic feet per secondFeb 18, 2014: 15.13 ft, below flood stage; 27,800 cubic feet per secondMar 7, 2014: 13.77 ft, below flood stage; 22,000 cubic feet per secondJan 6, 2015: 15.16 ft, below flood stage; 28,000 cubic feet per secondFeb 8, 2015: 13.64 ft, below flood stage; 20,900 cubic feet per secondNov 15, 2015: 14.49 ft, below flood stage; 24,061 cubic feet per secondNov 19, 2015: 15.62 ft, below flood stage; 29,323 cubic feet per secondDec 10, 2015: 16.84 ft, below flood stage; 37,718 cubic feet per secondNov 26, 2016: 14.47 ft, below flood stage; 23,980 cubic feet per secondFeb 10, 2017: 15.77 ft, below flood stage; 31,000 cubic feet per secondDec 22, 2019: 142.68 ft, moderate flooding; 29,660 cubic feet per secondJan 8, 2020: 142.41 ft, minor flooding; 28,183 cubic feet per secondJan 4, 2021: 142.59 ft, moderate flooding; 26,676 cubic feet per secondJan 14, 2021: 142.88 ft, moderate flooding; 28,853 cubic feet per secondNov 13, 2021: 141.41 ft, minor flooding; 20,747 cubic feet per secondJan 7, 2022: 145.21 ft, major flooding; 51,269 cubic feet per secondMar 2, 2022: 142.59 ft, moderate flooding; 26,676 cubic feet per secondDec 7, 2023: 142.28 ft, minor flooding; 24,484 cubic feet per secondJan 28, 2024: 140.85 ft, action stage; 18,900 cubic feet per secondDec 11, 2025: 143.27 ft, moderate flooding; 32,114 cubic feet per second Highest, 147.26 ft, Dec 4, 2007 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Chehalis River near Grand Mound 1930s: 0 1940s: 0 1950s: 0 1960s: 0 1970s: 0 1980s: 0 1990s: 0 2000s: 1 2010s: 1 2020s: 8 8 1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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

The 50 highest of 176 listed crests.

Highest listed crests, Chehalis River near Grand Mound
1Dec 4, 2007147.26+6.26Major79,100
2Jan 7, 2022145.21+4.21Major51,269
3Dec 11, 2025143.27+2.27Moderate32,114
4Jan 14, 2021142.88+1.88Moderate28,853
5Dec 22, 2019142.68+1.68Moderate29,660
6Jan 4, 2021142.59+1.59Moderate26,676
7Mar 2, 2022142.59+1.59Moderate26,676
8Jan 8, 2020142.41+1.41Minor28,183
9Dec 7, 2023142.28+1.28Minor24,484
10Nov 13, 2021141.41+0.41Minor20,747
11Jan 28, 2024140.85−0.15Action18,900
12Feb 9, 199619.98−121.02Below flood stage74,800
13Jan 10, 199019.34−121.66Below flood stage68,700
14Nov 25, 198618.41−122.59Below flood stage51,600
15Dec 29, 193718.39−122.61Below flood stage48,400
16Jan 21, 197218.21−122.79Below flood stage49,200
17Jan 8, 200918.18−122.82Below flood stage50,700
18Nov 25, 199018.12−122.88Below flood stage48,000
19Dec 5, 197517.73−123.27Below flood stage44,800
20Apr 6, 199117.66−123.34Below flood stage42,800
21Feb 11, 199017.46−123.54Below flood stage40,700
22Jan 26, 197117.29−123.71Below flood stage40,800
23Dec 30, 199617.29−123.71Below flood stage38,700
24Jan 23, 193517.08−123.92Below flood stage38,000
25Nov 26, 199817.04−123.96Below flood stage36,500
26Dec 21, 199416.97−124.03Below flood stage35,900
27Feb 10, 195116.96−124.04Below flood stage38,000
28Jan 17, 197416.88−124.12Below flood stage37,400
29Nov 30, 199516.88−124.12Below flood stage35,200
30Feb 25, 199916.85−124.15Below flood stage34,900
31Dec 10, 201516.84−124.16Below flood stage37,718
32Dec 3, 197716.79−124.21Below flood stage36,500
33Jan 15, 193616.77−124.23Below flood stage36,300
34Feb 18, 194916.70−124.30Below flood stage36,500
35Jan 26, 196416.66−124.34Below flood stage35,700
36Feb 2, 198716.66−124.34Below flood stage33,400
37Feb 23, 194916.62−124.38Below flood stage36,500
38Dec 22, 195516.58−124.42Below flood stage35,100
39Jan 31, 200616.54−124.46Below flood stage37,900
40Jan 6, 195416.53−124.47Below flood stage34,700
41Jan 20, 198616.49−124.51Below flood stage32,100
42Dec 14, 196616.48−124.52Below flood stage34,400
43Apr 24, 199616.42−124.58Below flood stage31,600
44Dec 17, 199916.34−124.66Below flood stage31,000
45Dec 18, 200116.33−124.67Below flood stage31,900
46Mar 4, 198716.31−124.69Below flood stage29,900
47Jan 12, 200616.28−124.72Below flood stage36,200
48Nov 7, 193416.13−124.87Below flood stage32,600
49Dec 8, 197016.07−124.93Below flood stage31,500
50Dec 28, 199415.95−125.05Below flood stage28,500

The worst floods along the Chehalis River

For this gauge's highest crests, the other gauges on the Chehalis River that crested above flood stage within a week.

December 4, 2007: 147.26 ft here, major flooding

  • DotyWA · Dec 3, 2007 · 336.26 ft · Major · its highest
  • CentraliaWA · Dec 4, 2007 · 178.10 ft · Major · its highest
  • PorterWA · Dec 5, 2007 · 53.17 ft · Major · its highest

January 7, 2022: 145.21 ft here, major flooding

  • PorterWA · Jan 8, 2022 · 52.01 ft · Major
  • CentraliaWA · Jan 7, 2022 · 174.93 ft · Moderate
  • DotyWA · Jan 6, 2022 · 321.11 ft · Minor

December 11, 2025: 143.27 ft here, moderate flooding

  • DotyWA · Dec 9, 2025 · 318.47 ft · Minor
  • CentraliaWA · Dec 11, 2025 · 168.59 ft · Minor
  • PorterWA · Dec 12, 2025 · 49.64 ft · Minor

Gauges on the Chehalis River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Chehalis River
DotyWA318.0336.26 ft, Dec 3, 20071
CentraliaWA168.5178.10 ft, Dec 4, 20071
Grand Mound this gaugeWA141.0147.26 ft, Dec 4, 20072
PorterWA48.053.17 ft, Dec 5, 20072

Other gauges in Thurston County

Flood gauges in Thurston County
Rainier11.017.01 ft, Jan 9, 19904
Bucoda211.5216.02 ft, Feb 8, 19962

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

NOAA National Water Prediction Service, gauge CGMW1, 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.