Highest listed crest 25.50 ft July 12, 1951; 46,700 cubic feet per second
Flood stage 19.0 ft Major flooding from 37.0 ft
Crests at major 0 77 above flood stage
Most recent flood crest April 3, 2025 20.52 ft, minor flooding Listed crests at the Chapman Creek near Chapman, 1951 to 2025 0 10 20 30 40 ft Flood stage 19.0 ft Major 37.0 ft Jul 12, 1951: 25.50 ft, minor flooding; 46,700 cubic feet per second Jul 3, 1958: 23.65 ft, minor flooding; 12,200 cubic feet per second May 5, 1961: 16.18 ft, action stage; 2,020 cubic feet per second May 22, 1961: 22.98 ft, minor flooding; 12,100 cubic feet per second Jun 3, 1961: 19.80 ft, minor flooding; 4,300 cubic feet per second Jun 15, 1961: 20.03 ft, minor flooding; 4,530 cubic feet per second Jul 21, 1961: 17.58 ft, action stage; 2,690 cubic feet per second Sep 13, 1961: 14.70 ft, action stage; 1,520 cubic feet per second Sep 23, 1961: 18.60 ft, action stage; 3,280 cubic feet per second Jan 27, 1962: 18.85 ft, action stage; 2,070 cubic feet per second Mar 20, 1962: 18.43 ft, action stage; 1,990 cubic feet per second May 29, 1962: 18.90 ft, action stage; 2,080 cubic feet per second Jun 3, 1962: 17.89 ft, action stage; 1,880 cubic feet per second Jun 24, 1962: 15.47 ft, action stage; 1,390 cubic feet per second Sep 22, 1962: 18.74 ft, action stage; 2,050 cubic feet per second Jul 12, 1963: 15.53 ft, action stage; 1,490 cubic feet per second Oct 19, 1963: 15.00 ft, action stage; 1,380 cubic feet per second Jun 10, 1964: 15.11 ft, action stage; 1,400 cubic feet per second Jun 15, 1964: 17.38 ft, action stage; 1,950 cubic feet per second Jun 23, 1964: 20.75 ft, minor flooding; 3,460 cubic feet per second Jun 28, 1964: 16.30 ft, action stage; 1,680 cubic feet per second Jun 10, 1965: 19.13 ft, minor flooding; 2,550 cubic feet per second Jun 14, 1965: 15.68 ft, action stage; 1,520 cubic feet per second Jun 28, 1965: 22.35 ft, minor flooding; 5,100 cubic feet per second Jul 7, 1965: 19.82 ft, minor flooding; 2,890 cubic feet per second Sep 22, 1965: 19.09 ft, minor flooding; 2,540 cubic feet per second Aug 21, 1966: 20.23 ft, minor flooding; 3,120 cubic feet per second Jun 22, 1967: 21.50 ft, minor flooding; 3,820 cubic feet per second Jul 25, 1967: 14.52 ft, action stage; 1,250 cubic feet per second Jul 29, 1967: 19.45 ft, minor flooding; 2,600 cubic feet per second Sep 20, 1967: 22.53 ft, minor flooding; 5,260 cubic feet per second Oct 7, 1967: 21.38 ft, minor flooding; 3,720 cubic feet per second Feb 27, 1969: 19.92 ft, minor flooding; 2,630 cubic feet per second Jun 22, 1969: 16.25 ft, action stage; 1,320 cubic feet per second May 10, 1970: 16.87 ft, action stage; 1,670 cubic feet per second May 26, 1970: 17.38 ft, action stage; 1,810 cubic feet per second Jun 4, 1970: 20.51 ft, minor flooding; 3,210 cubic feet per second Sep 22, 1970: 19.37 ft, minor flooding; 2,340 cubic feet per second May 22, 1971: 22.58 ft, minor flooding; 9,280 cubic feet per second Aug 26, 1972: 18.17 ft, action stage; 1,980 cubic feet per second Sep 28, 1973: 22.60 ft, minor flooding; 8,400 cubic feet per second Oct 12, 1973: 24.08 ft, minor flooding; 15,800 cubic feet per second Jun 24, 1975: 21.51 ft, minor flooding; 4,520 cubic feet per second Apr 17, 1976: 16.20 ft, action stage; 1,450 cubic feet per second Apr 21, 1976: 16.89 ft, action stage; 1,620 cubic feet per second Apr 25, 1976: 15.58 ft, action stage; 1,320 cubic feet per second May 6, 1976: 17.39 ft, action stage; 1,760 cubic feet per second Jun 24, 1976: 18.55 ft, action stage; 2,120 cubic feet per second Jul 18, 1976: 20.41 ft, minor flooding; 3,200 cubic feet per second Mar 11, 1978: 15.54 ft, action stage; 1,310 cubic feet per second May 26, 1978: 20.56 ft, minor flooding; 3,320 cubic feet per second Jun 20, 1978: 15.57 ft, action stage; 1,320 cubic feet per second Jul 23, 1978: 17.97 ft, action stage; 1,930 cubic feet per second Aug 2, 1978: 15.77 ft, action stage; 1,360 cubic feet per second Sep 21, 1978: 15.53 ft, action stage; 1,310 cubic feet per second Feb 23, 1979: 15.02 ft, action stage; 1,210 cubic feet per second Mar 3, 1979: 19.13 ft, minor flooding; 2,410 cubic feet per second Mar 19, 1979: 18.86 ft, action stage; 2,270 cubic feet per second Mar 23, 1979: 20.62 ft, minor flooding; 3,390 cubic feet per second Jul 6, 1979: 17.03 ft, action stage; 1,660 cubic feet per second Jul 13, 1979: 16.44 ft, action stage; 1,500 cubic feet per second Jul 17, 1979: 16.11 ft, action stage; 1,430 cubic feet per second Jul 26, 1979: 17.31 ft, action stage; 1,730 cubic feet per second Oct 31, 1979: 21.76 ft, minor flooding; 5,120 cubic feet per second Mar 31, 1980: 21.26 ft, minor flooding; 4,220 cubic feet per second May 19, 1981: 15.97 ft, action stage; 1,400 cubic feet per second Jul 28, 1981: 15.98 ft, action stage; 1,400 cubic feet per second Feb 19, 1982: 17.49 ft, action stage; 1,790 cubic feet per second May 22, 1982: 20.08 ft, minor flooding; 2,970 cubic feet per second Jun 24, 1982: 18.83 ft, action stage; 2,260 cubic feet per second Jul 7, 1982: 16.03 ft, action stage; 1,410 cubic feet per second Jul 11, 1982: 21.24 ft, minor flooding; 4,160 cubic feet per second Mar 6, 1983: 15.04 ft, action stage; 1,210 cubic feet per second Apr 2, 1983: 18.12 ft, action stage; 1,980 cubic feet per second Mar 25, 1984: 18.53 ft, action stage; 2,120 cubic feet per second Apr 4, 1984: 20.98 ft, minor flooding; 3,820 cubic feet per second May 1, 1984: 19.97 ft, minor flooding; 2,900 cubic feet per second Oct 10, 1985: 18.35 ft, action stage; 2,060 cubic feet per second May 7, 1986: 20.87 ft, minor flooding; 3,680 cubic feet per second May 17, 1986: 15.61 ft, action stage; 1,360 cubic feet per second Jun 30, 1986: 14.75 ft, action stage; 1,220 cubic feet per second Aug 22, 1986: 16.75 ft, action stage; 1,580 cubic feet per second Sep 11, 1986: 16.26 ft, action stage; 1,480 cubic feet per second Oct 1, 1986: 20.74 ft, minor flooding; 3,350 cubic feet per second Oct 12, 1986: 18.79 ft, action stage; 2,240 cubic feet per second Mar 18, 1987: 19.83 ft, minor flooding; 2,800 cubic feet per second Mar 25, 1987: 20.89 ft, minor flooding; 3,710 cubic feet per second Apr 14, 1987: 20.66 ft, minor flooding; 3,440 cubic feet per second May 27, 1987: 16.77 ft, action stage; 1,590 cubic feet per second Jul 16, 1988: 15.43 ft, action stage; 1,330 cubic feet per second Sep 9, 1989: 17.90 ft, action stage; 1,910 cubic feet per second Aug 16, 1990: 22.95 ft, minor flooding; 9,100 cubic feet per second Jun 3, 1991: 17.19 ft, action stage; 1,830 cubic feet per second Jun 13, 1991: 19.28 ft, minor flooding; 2,480 cubic feet per second Jun 17, 1992: 17.90 ft, action stage; 1,980 cubic feet per second Jul 14, 1992: 18.63 ft, action stage; 2,160 cubic feet per second Jul 23, 1992: 20.74 ft, minor flooding; 3,530 cubic feet per second Jul 27, 1992: 18.21 ft, action stage; 2,050 cubic feet per second Aug 6, 1992: 17.41 ft, action stage; 1,870 cubic feet per second Oct 9, 1992: 15.48 ft, action stage; 1,480 cubic feet per second Mar 2, 1993: 15.96 ft, action stage; 1,580 cubic feet per second Mar 31, 1993: 17.90 ft, action stage; 1,980 cubic feet per second Apr 4, 1993: 15.13 ft, action stage; 1,420 cubic feet per second May 12, 1993: 22.14 ft, minor flooding; 6,170 cubic feet per second Jun 24, 1993: 15.55 ft, action stage; 1,500 cubic feet per second Jul 6, 1993: 22.50 ft, minor flooding; 7,350 cubic feet per second Jul 10, 1993: 19.70 ft, minor flooding; 2,720 cubic feet per second Jul 22, 1993: 22.15 ft, minor flooding; 6,200 cubic feet per second Aug 28, 1993: 14.16 ft, action stage; 1,240 cubic feet per second Jul 4, 1994: 17.05 ft, action stage May 9, 1995: 20.88 ft, minor flooding May 14, 1995: 20.51 ft, minor flooding May 23, 1995: 19.65 ft, minor flooding May 28, 1995: 20.57 ft, minor flooding Jun 5, 1995: 19.90 ft, minor flooding Nov 17, 1996: 20.85 ft, minor flooding May 25, 1997: 22.75 ft, minor flooding; 8,280 cubic feet per second May 23, 1999: 22.89 ft, minor flooding; 9,550 cubic feet per second Jun 20, 2000: 14.01 ft, action stage; 1,110 cubic feet per second Feb 25, 2001: 20.18 ft, minor flooding Aug 25, 2001: 21.90 ft, minor flooding May 13, 2002: 8.56 ft, below flood stage; 320 cubic feet per second Apr 25, 2003: 12.55 ft, below flood stage; 954 cubic feet per second Jun 28, 2004: 19.29 ft, minor flooding; 2,560 cubic feet per second Jun 4, 2005: 20.18 ft, minor flooding; 3,250 cubic feet per second May 6, 2007: 21.90 ft, minor flooding; 6,556 cubic feet per second May 24, 2007: 23.58 ft, minor flooding; 14,600 cubic feet per second Sep 13, 2008: 16.40 ft, action stage; 1,750 cubic feet per second Sep 22, 2009: 20.11 ft, minor flooding; 3,160 cubic feet per second Jun 14, 2010: 19.66 ft, minor flooding; 2,553 cubic feet per second Jul 23, 2010: 20.15 ft, minor flooding; 3,190 cubic feet per second Jun 2, 2011: 22.56 ft, minor flooding; 10,800 cubic feet per second Apr 16, 2012: 20.94 ft, minor flooding; 4,180 cubic feet per second Aug 3, 2013: 21.72 ft, minor flooding; 5,760 cubic feet per second Jun 10, 2014: 20.08 ft, minor flooding; 3,340 cubic feet per second Jun 6, 2015: 17.48 ft, action stage; 1,820 cubic feet per second Dec 14, 2015: 21.55 ft, minor flooding May 28, 2016: 20.87 ft, minor flooding Mar 30, 2017: 20.33 ft, minor flooding May 19, 2017: 21.84 ft, minor flooding Oct 9, 2018: 21.28 ft, minor flooding Dec 2, 2018: 19.42 ft, minor flooding May 8, 2019: 21.17 ft, minor flooding May 22, 2019: 21.35 ft, minor flooding Jun 23, 2019: 21.26 ft, minor flooding Jul 5, 2019: 19.46 ft, minor flooding May 25, 2020: 21.72 ft, minor flooding; 6,310 cubic feet per second Jul 16, 2021: 13.94 ft, below flood stage; 1,420 cubic feet per second May 26, 2022: 18.51 ft, action stage; 2,640 cubic feet per second Jun 10, 2023: 9.60 ft, below flood stage; 588 cubic feet per second May 27, 2024: 16.42 ft, action stage; 2,010 cubic feet per second Apr 3, 2025: 20.52 ft, minor flooding; 3,730 cubic feet per second Highest, 25.50 ft, Jul 12, 1951 1960 1970 1980 1990 2000 2010 2020 Crests at or above flood stage, by decade Crests at or above flood stage per decade, Chapman Creek near Chapman 1950s: 2 1960s: 14 1970s: 11 1980s: 10 1990s: 15 2000s: 7 2010s: 16 16 2020s: 2 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s 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. 05 Other gauges in Dickinson County Dickinson County: every hazard · River floods across the country · Kansas
NOAA National Water Prediction Service, gauge CHPK1, 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.