Highest listed crest 29.60 ft April 19, 2013; 9,640 cubic feet per second
Flood stage 24.0 ft No major stage set
Crests at major 0 71 above flood stage
Most recent flood crest April 5, 2026 25.49 ft, minor flooding Listed crests at the Pope Creek near Keithsburg, 1935 to 2026 18 20 22 24 26 28 30 ft Flood stage 24.0 ft Jun 18, 1935: 24.00 ft, minor flooding; 2,530 cubic feet per second Feb 26, 1936: 23.16 ft, action stage; 2,210 cubic feet per second Feb 21, 1937: 28.00 ft, minor flooding; 2,000 cubic feet per second Jan 24, 1938: 24.95 ft, minor flooding; 3,200 cubic feet per second Mar 12, 1939: 26.24 ft, minor flooding; 4,230 cubic feet per second Mar 3, 1940: 19.30 ft, below flood stage; 795 cubic feet per second Jun 3, 1941: 20.74 ft, below flood stage; 1,120 cubic feet per second Jul 6, 1942: 21.77 ft, below flood stage; 1,520 cubic feet per second Feb 6, 1943: 23.35 ft, action stage Apr 23, 1944: 23.99 ft, action stage; 2,340 cubic feet per second May 23, 1944: 23.99 ft, action stage; 2,580 cubic feet per second May 16, 1945: 23.11 ft, action stage; 2,000 cubic feet per second Jan 5, 1946: 25.39 ft, minor flooding; 3,520 cubic feet per second Jul 1, 1947: 25.66 ft, minor flooding; 3,600 cubic feet per second Mar 19, 1948: 25.57 ft, minor flooding; 3,670 cubic feet per second Feb 19, 1949: 23.10 ft, action stage; 1,950 cubic feet per second Apr 25, 1950: 26.19 ft, minor flooding; 4,180 cubic feet per second May 11, 1951: 25.91 ft, minor flooding; 3,860 cubic feet per second Mar 22, 1952: 22.42 ft, action stage; 1,600 cubic feet per second Jul 6, 1953: 23.21 ft, action stage; 2,040 cubic feet per second Feb 21, 1954: 26.64 ft, minor flooding Mar 25, 1954: 22.41 ft, action stage; 1,600 cubic feet per second Oct 11, 1954: 25.12 ft, minor flooding; 2,090 cubic feet per second Oct 6, 1955: 24.56 ft, minor flooding; 1,840 cubic feet per second Jul 8, 1956: 22.74 ft, action stage; 1,260 cubic feet per second Jul 4, 1957: 20.11 ft, below flood stage; 671 cubic feet per second Jul 31, 1958: 26.52 ft, minor flooding; 3,040 cubic feet per second May 30, 1959: 22.94 ft, action stage; 1,320 cubic feet per second Mar 30, 1960: 26.69 ft, minor flooding; 3,500 cubic feet per second Sep 13, 1961: 24.30 ft, minor flooding; 1,730 cubic feet per second Mar 11, 1962: 24.30 ft, minor flooding; 1,730 cubic feet per second Mar 4, 1963: 24.20 ft, minor flooding; 1,690 cubic feet per second Apr 20, 1964: 21.20 ft, below flood stage; 897 cubic feet per second Apr 25, 1965: 25.28 ft, minor flooding; 2,290 cubic feet per second Feb 10, 1966: 22.23 ft, action stage; 1,150 cubic feet per second Aug 17, 1967: 21.40 ft, below flood stage; 852 cubic feet per second Nov 2, 1967: 20.35 ft, below flood stage; 624 cubic feet per second Jul 18, 1969: 27.00 ft, minor flooding; 3,600 cubic feet per second Sep 25, 1970: 26.09 ft, minor flooding; 2,590 cubic feet per second Feb 20, 1971: 25.90 ft, minor flooding; 2,400 cubic feet per second Aug 6, 1972: 25.59 ft, minor flooding; 2,110 cubic feet per second Apr 22, 1973: 27.88 ft, minor flooding; 8,900 cubic feet per second May 2, 1973: 26.70 ft, minor flooding; 3,670 cubic feet per second Jun 23, 1974: 26.70 ft, minor flooding; 3,670 cubic feet per second Mar 17, 1975: 23.85 ft, action stage; 1,520 cubic feet per second Aug 29, 1975: 24.04 ft, minor flooding; 1,630 cubic feet per second Apr 25, 1976: 25.83 ft, minor flooding; 2,740 cubic feet per second Aug 8, 1977: 26.46 ft, minor flooding; 1,940 cubic feet per second Nov 2, 1977: 26.55 ft, minor flooding; 3,680 cubic feet per second Mar 19, 1979: 25.67 ft, minor flooding; 2,710 cubic feet per second Jun 2, 1980: 26.53 ft, minor flooding Jun 30, 1981: 26.26 ft, minor flooding; 2,200 cubic feet per second Jul 7, 1982: 28.36 ft, minor flooding; 7,200 cubic feet per second Apr 3, 1983: 27.17 ft, minor flooding; 4,130 cubic feet per second Jun 9, 1984: 25.05 ft, minor flooding; 1,360 cubic feet per second Feb 23, 1985: 27.76 ft, minor flooding; 5,480 cubic feet per second Feb 19, 1986: 27.92 ft, minor flooding; 5,900 cubic feet per second Mar 2, 1991: 26.30 ft, minor flooding; 2,650 cubic feet per second Sep 10, 1992: 25.42 ft, minor flooding; 1,680 cubic feet per second Jul 24, 1993: 29.08 ft, minor flooding; 7,270 cubic feet per second Feb 20, 1994: 26.87 ft, minor flooding; 3,560 cubic feet per second Jun 3, 1995: 27.17 ft, minor flooding; 2,110 cubic feet per second May 17, 1996: 28.18 ft, minor flooding; 3,580 cubic feet per second Mar 31, 1998: 26.68 ft, minor flooding; 2,940 cubic feet per second Oct 18, 1998: 28.68 ft, minor flooding; 8,290 cubic feet per second May 31, 2000: 26.95 ft, minor flooding; 1,910 cubic feet per second Feb 9, 2001: 29.25 ft, minor flooding Feb 24, 2001: 28.48 ft, minor flooding; 6,360 cubic feet per second May 12, 2002: 28.13 ft, minor flooding; 5,120 cubic feet per second May 1, 2003: 29.11 ft, minor flooding; 5,380 cubic feet per second May 30, 2004: 26.87 ft, minor flooding; 2,180 cubic feet per second Jan 13, 2005: 24.58 ft, minor flooding; 808 cubic feet per second Apr 14, 2006: 22.40 ft, action stage; 448 cubic feet per second Mar 1, 2007: 29.24 ft, minor flooding Sep 13, 2008: 29.58 ft, minor flooding; 4,870 cubic feet per second Dec 28, 2008: 29.20 ft, minor flooding; 4,600 cubic feet per second May 14, 2010: 29.54 ft, minor flooding; 6,320 cubic feet per second May 28, 2011: 28.45 ft, minor flooding; 2,460 cubic feet per second May 5, 2012: 27.81 ft, minor flooding; 1,640 cubic feet per second Apr 19, 2013: 29.60 ft, minor flooding; 9,640 cubic feet per second Feb 21, 2014: 29.00 ft, minor flooding; 4,820 cubic feet per second Jul 7, 2015: 28.61 ft, minor flooding; 3,000 cubic feet per second Jun 22, 2016: 28.02 ft, minor flooding; 1,790 cubic feet per second Jan 17, 2017: 28.37 ft, minor flooding; 2,250 cubic feet per second Feb 21, 2018: 28.35 ft, minor flooding May 29, 2019: 29.21 ft, minor flooding; 5,050 cubic feet per second May 18, 2020: 27.54 ft, minor flooding; 1,860 cubic feet per second Jul 16, 2021: 24.39 ft, minor flooding; 773 cubic feet per second Jul 9, 2022: 24.58 ft, minor flooding; 812 cubic feet per second Mar 26, 2023: 24.95 ft, minor flooding; 900 cubic feet per second Jul 6, 2023: 24.13 ft, minor flooding; 731 cubic feet per second Apr 5, 2026: 25.49 ft, minor flooding; 1,035 cubic feet per second Highest, 29.60 ft, Apr 19, 2013 1940 1960 1980 2000 2020 Crests at or above flood stage, by decade Crests at or above flood stage per decade, Pope Creek near Keithsburg 1930s: 4 1940s: 3 1950s: 6 1960s: 6 1970s: 11 11 1980s: 7 1990s: 8 2000s: 10 2010s: 10 2020s: 6 1930s 1940s 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 Mercer County Mercer County: every hazard · River floods across the country · Illinois
NOAA National Water Prediction Service, gauge PCKI2, 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.