Highest listed crest 27.05 ft April 23, 1973; 66,800 cubic feet per second
Flood stage 15.0 ft Major flooding from 20.0 ft
Crests at major 30 3rd of 203 gauges in Iowa
Most recent flood crest May 30, 2019 24.05 ft, major flooding Listed crests at the Skunk River at Augusta, 1903 to 2019 0 10 20 30 ft Flood stage 15.0 ft Major 20.0 ft Jun 1, 1903: 21.00 ft, major flooding; 45,000 cubic feet per second Jul 11, 1915: 15.70 ft, minor flooding; 22,800 cubic feet per second Mar 28, 1916: 18.70 ft, moderate flooding; 33,600 cubic feet per second Jun 7, 1917: 17.20 ft, moderate flooding; 27,700 cubic feet per second Jun 11, 1918: 17.20 ft, moderate flooding; 27,700 cubic feet per second May 4, 1919: 15.30 ft, minor flooding; 21,700 cubic feet per second Apr 20, 1920: 17.60 ft, moderate flooding; 24,500 cubic feet per second Jun 19, 1921: 11.80 ft, below flood stage; 13,700 cubic feet per second Feb 23, 1922: 10.30 ft, below flood stage; 11,200 cubic feet per second Mar 26, 1923: 8.50 ft, below flood stage; 8,600 cubic feet per second Jun 28, 1924: 19.40 ft, moderate flooding; 27,800 cubic feet per second Feb 24, 1925: 14.40 ft, action stage; 14,300 cubic feet per second Sep 16, 1926: 20.50 ft, major flooding; 31,500 cubic feet per second Oct 1, 1926: 18.90 ft, moderate flooding; 26,400 cubic feet per second Aug 4, 1928: 16.00 ft, minor flooding; 21,200 cubic feet per second Apr 21, 1929: 18.40 ft, moderate flooding; 26,600 cubic feet per second Jun 17, 1930: 22.60 ft, major flooding; 44,500 cubic feet per second Jul 4, 1931: 11.90 ft, below flood stage; 14,000 cubic feet per second Jan 1, 1932: 15.80 ft, minor flooding; 20,900 cubic feet per second May 13, 1933: 15.20 ft, minor flooding; 19,800 cubic feet per second Apr 5, 1934: 4.00 ft, below flood stage; 2,220 cubic feet per second Jun 2, 1935: 15.20 ft, minor flooding; 16,400 cubic feet per second Feb 26, 1936: 17.40 ft, moderate flooding; 16,000 cubic feet per second Feb 22, 1937: 17.30 ft, moderate flooding; 21,800 cubic feet per second Feb 8, 1938: 19.30 ft, moderate flooding; 18,300 cubic feet per second Jun 16, 1938: 17.90 ft, moderate flooding; 23,300 cubic feet per second Mar 13, 1939: 19.50 ft, moderate flooding; 28,000 cubic feet per second Aug 17, 1940: 11.90 ft, below flood stage; 11,800 cubic feet per second Jun 12, 1941: 9.20 ft, below flood stage; 8,280 cubic feet per second Feb 3, 1942: 14.30 ft, action stage; 13,600 cubic feet per second Aug 6, 1943: 20.50 ft, major flooding; 29,800 cubic feet per second May 26, 1944: 23.04 ft, major flooding; 44,800 cubic feet per second May 18, 1945: 16.70 ft, minor flooding; 20,200 cubic feet per second Jun 22, 1946: 20.10 ft, major flooding; 30,900 cubic feet per second Jun 9, 1947: 19.60 ft, moderate flooding; 29,000 cubic feet per second Mar 20, 1948: 18.70 ft, moderate flooding; 25,800 cubic feet per second Mar 4, 1949: 15.40 ft, minor flooding; 16,000 cubic feet per second Jun 19, 1950: 19.90 ft, moderate flooding; 30,100 cubic feet per second Feb 19, 1951: 22.20 ft, major flooding; 18,000 cubic feet per second May 11, 1951: 18.00 ft, moderate flooding; 23,700 cubic feet per second Mar 13, 1952: 15.92 ft, minor flooding; 18,900 cubic feet per second Apr 1, 1953: 14.39 ft, action stage; 16,100 cubic feet per second Aug 27, 1954: 10.20 ft, below flood stage; 9,780 cubic feet per second Apr 25, 1955: 15.62 ft, minor flooding; 18,300 cubic feet per second Jun 20, 1956: 5.47 ft, below flood stage; 4,050 cubic feet per second Jul 31, 1957: 7.05 ft, below flood stage; 5,850 cubic feet per second Aug 1, 1958: 13.12 ft, below flood stage; 12,800 cubic feet per second Feb 25, 1959: 17.87 ft, moderate flooding Apr 3, 1960: 25.00 ft, major flooding; 51,000 cubic feet per second Sep 14, 1961: 15.38 ft, minor flooding; 17,300 cubic feet per second Nov 20, 1961: 18.89 ft, moderate flooding; 25,200 cubic feet per second Mar 6, 1963: 18.54 ft, moderate flooding; 18,000 cubic feet per second Apr 21, 1964: 13.83 ft, below flood stage; 14,600 cubic feet per second Sep 24, 1965: 24.90 ft, major flooding; 45,500 cubic feet per second Jun 18, 1966: 16.37 ft, minor flooding; 19,100 cubic feet per second Jun 14, 1967: 11.11 ft, below flood stage; 11,100 cubic feet per second Jul 24, 1968: 11.36 ft, below flood stage; 11,500 cubic feet per second Jul 21, 1969: 19.29 ft, moderate flooding; 26,500 cubic feet per second Sep 23, 1970: 18.86 ft, moderate flooding; 25,100 cubic feet per second Feb 19, 1971: 18.16 ft, moderate flooding Feb 28, 1971: 15.02 ft, minor flooding; 15,200 cubic feet per second Apr 23, 1972: 13.50 ft, below flood stage; 14,400 cubic feet per second Apr 23, 1973: 27.05 ft, major flooding; 66,800 cubic feet per second May 22, 1974: 18.83 ft, moderate flooding; 27,300 cubic feet per second Mar 29, 1975: 12.86 ft, below flood stage; 14,200 cubic feet per second Apr 27, 1976: 22.34 ft, major flooding; 40,900 cubic feet per second Aug 9, 1977: 9.23 ft, below flood stage; 9,020 cubic feet per second Mar 21, 1978: 20.70 ft, major flooding; 34,500 cubic feet per second Mar 21, 1979: 18.57 ft, moderate flooding; 29,500 cubic feet per second Aug 17, 1980: 14.97 ft, action stage; 19,800 cubic feet per second Apr 15, 1981: 17.50 ft, moderate flooding; 28,300 cubic feet per second Feb 22, 1982: 19.51 ft, moderate flooding Jul 20, 1982: 17.44 ft, moderate flooding; 24,900 cubic feet per second Apr 3, 1983: 19.15 ft, moderate flooding; 29,300 cubic feet per second Feb 14, 1984: 18.27 ft, moderate flooding May 6, 1984: 16.49 ft, minor flooding; 23,100 cubic feet per second Feb 22, 1985: 20.14 ft, major flooding Mar 5, 1985: 17.98 ft, moderate flooding; 27,000 cubic feet per second May 19, 1986: 18.29 ft, moderate flooding; 26,600 cubic feet per second Oct 4, 1986: 18.50 ft, moderate flooding; 29,000 cubic feet per second Jan 21, 1988: 11.78 ft, below flood stage Sep 9, 1989: 10.80 ft, below flood stage; 10,600 cubic feet per second Jun 23, 1990: 22.34 ft, major flooding; 44,200 cubic feet per second Apr 21, 1991: 13.53 ft, below flood stage; 15,900 cubic feet per second Jul 15, 1992: 15.07 ft, minor flooding; 19,000 cubic feet per second Jun 25, 1993: 20.19 ft, major flooding; 35,400 cubic feet per second Jul 10, 1993: 23.70 ft, major flooding; 46,600 cubic feet per second Jul 26, 1993: 22.15 ft, major flooding; 39,600 cubic feet per second Oct 2, 1993: 12.50 ft, below flood stage; 14,500 cubic feet per second May 24, 1995: 17.63 ft, moderate flooding; 25,900 cubic feet per second May 28, 1996: 21.61 ft, major flooding; 40,200 cubic feet per second Feb 22, 1997: 15.20 ft, minor flooding; 20,800 cubic feet per second Apr 1, 1998: 17.47 ft, moderate flooding; 25,400 cubic feet per second Apr 28, 1999: 14.79 ft, action stage; 18,900 cubic feet per second Jun 27, 2000: 15.18 ft, minor flooding; 19,800 cubic feet per second Feb 10, 2001: 20.51 ft, major flooding May 14, 2001: 19.85 ft, moderate flooding; 32,700 cubic feet per second May 13, 2002: 15.61 ft, minor flooding; 20,800 cubic feet per second May 11, 2003: 10.91 ft, below flood stage; 11,800 cubic feet per second Jun 2, 2004: 16.40 ft, minor flooding; 22,600 cubic feet per second Feb 15, 2005: 11.39 ft, below flood stage; 12,600 cubic feet per second Apr 7, 2006: 10.97 ft, below flood stage; 12,000 cubic feet per second Aug 26, 2007: 16.97 ft, minor flooding; 23,900 cubic feet per second Jun 16, 2008: 22.85 ft, major flooding; 43,900 cubic feet per second Mar 11, 2009: 19.57 ft, moderate flooding; 33,300 cubic feet per second Jan 25, 2010: 24.44 ft, major flooding Mar 10, 2010: 22.87 ft, major flooding; 36,000 cubic feet per second Aug 16, 2010: 22.80 ft, major flooding; 45,400 cubic feet per second Jun 19, 2011: 19.31 ft, moderate flooding; 35,900 cubic feet per second May 6, 2012: 13.41 ft, below flood stage; 18,800 cubic feet per second Apr 21, 2013: 21.84 ft, major flooding; 39,600 cubic feet per second Jun 1, 2013: 21.33 ft, major flooding; 41,900 cubic feet per second Feb 22, 2014: 20.45 ft, major flooding; 33,121 cubic feet per second Jul 8, 2014: 16.98 ft, minor flooding; 24,800 cubic feet per second Sep 11, 2014: 16.81 ft, minor flooding; 25,300 cubic feet per second Jul 12, 2015: 16.32 ft, minor flooding; 24,900 cubic feet per second Dec 23, 2015: 15.70 ft, minor flooding; 23,500 cubic feet per second Jan 22, 2017: 14.78 ft, action stage Apr 6, 2017: 14.00 ft, action stage; 20,000 cubic feet per second Sep 12, 2018: 15.52 ft, minor flooding; 23,000 cubic feet per second Feb 5, 2019: 20.16 ft, major flooding; 18,100 cubic feet per second Feb 24, 2019: 21.87 ft, major flooding Mar 12, 2019: 21.37 ft, major flooding; 37,300 cubic feet per second May 30, 2019: 24.05 ft, major flooding; 49,764 cubic feet per second Highest, 27.05 ft, Apr 23, 1973 1920 1940 1960 1980 2000 2020 Crests at or above flood stage, by decade Crests at or above flood stage per decade, Skunk River at Augusta 1900s: 1 1910s: 5 1920s: 6 1930s: 9 1940s: 7 1950s: 6 1960s: 7 1970s: 8 1980s: 10 1990s: 9 2000s: 8 2010s: 16 16 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 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. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable. Des Moines County: every hazard · River floods across the country · Iowa
NOAA National Water Prediction Service, gauge AGSI4, 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.