Highest listed crest 12.35 ft August 29, 2011; 15,212 cubic feet per second
Flood stage 8.0 ft Major flooding from 12.0 ft
Crests at major 1 98th of 160 gauges in New York
Most recent flood crest July 11, 2024 8.34 ft, minor flooding Listed crests at the Boquet River above Willsboro, 1924 to 2024 4 6 8 10 12 14 ft Flood stage 8.0 ft Major 12.0 ft May 5, 1924: 6.55 ft, below flood stage; 3,980 cubic feet per second Oct 1, 1924: 10.85 ft, moderate flooding; 11,800 cubic feet per second Mar 29, 1925: 9.23 ft, minor flooding; 8,500 cubic feet per second Apr 25, 1926: 7.60 ft, action stage; 5,600 cubic feet per second Nov 17, 1926: 8.80 ft, minor flooding; 7,690 cubic feet per second Nov 18, 1927: 7.00 ft, below flood stage; 4,650 cubic feet per second Jan 19, 1929: 6.20 ft, below flood stage; 3,480 cubic feet per second Apr 7, 1930: 7.80 ft, action stage; 5,940 cubic feet per second Apr 11, 1931: 6.02 ft, below flood stage; 3,230 cubic feet per second Apr 13, 1932: 6.45 ft, below flood stage; 3,830 cubic feet per second Apr 18, 1933: 7.53 ft, action stage; 5,490 cubic feet per second Apr 12, 1934: 6.80 ft, below flood stage; 4,350 cubic feet per second May 8, 1935: 5.22 ft, below flood stage; 2,170 cubic feet per second May 19, 1936: 9.13 ft, minor flooding; 8,310 cubic feet per second Apr 6, 1937: 7.99 ft, action stage; 6,260 cubic feet per second Sep 22, 1938: 8.77 ft, minor flooding; 7,640 cubic feet per second Apr 23, 1939: 6.40 ft, below flood stage; 3,760 cubic feet per second May 29, 1940: 6.01 ft, below flood stage; 3,210 cubic feet per second Apr 15, 1941: 5.67 ft, below flood stage; 2,750 cubic feet per second Apr 16, 1942: 6.13 ft, below flood stage; 3,380 cubic feet per second May 12, 1943: 5.58 ft, below flood stage; 2,630 cubic feet per second Jun 25, 1944: 6.32 ft, below flood stage; 3,450 cubic feet per second May 19, 1945: 7.47 ft, below flood stage; 5,230 cubic feet per second Mar 15, 1946: 5.97 ft, below flood stage; 2,970 cubic feet per second Apr 13, 1947: 7.58 ft, action stage; 5,420 cubic feet per second Mar 23, 1948: 6.52 ft, below flood stage; 3,730 cubic feet per second Dec 31, 1948: 8.86 ft, minor flooding; 7,790 cubic feet per second Apr 21, 1950: 6.43 ft, below flood stage; 3,730 cubic feet per second Mar 31, 1951: 7.73 ft, action stage; 5,740 cubic feet per second Apr 6, 1952: 7.94 ft, action stage; 6,100 cubic feet per second Mar 25, 1953: 7.88 ft, action stage; 6,010 cubic feet per second Apr 17, 1954: 7.17 ft, below flood stage; 4,900 cubic feet per second Apr 15, 1955: 6.50 ft, below flood stage; 3,650 cubic feet per second Apr 5, 1956: 6.86 ft, below flood stage; 4,430 cubic feet per second May 21, 1957: 4.20 ft, below flood stage; 1,200 cubic feet per second Dec 21, 1957: 8.75 ft, minor flooding; 7,460 cubic feet per second Apr 3, 1959: 7.30 ft, below flood stage; 4,930 cubic feet per second Apr 5, 1960: 7.34 ft, below flood stage; 4,990 cubic feet per second Apr 23, 1961: 5.67 ft, below flood stage; 2,700 cubic feet per second Apr 8, 1962: 7.36 ft, below flood stage; 5,030 cubic feet per second Apr 4, 1963: 6.28 ft, below flood stage; 3,470 cubic feet per second Mar 6, 1964: 10.12 ft, moderate flooding; 4,700 cubic feet per second Apr 22, 1965: 4.27 ft, below flood stage; 1,200 cubic feet per second Mar 20, 1966: 7.78 ft, action stage; 1,800 cubic feet per second Mar 25, 1966: 5.96 ft, below flood stage; 3,060 cubic feet per second Apr 4, 1967: 6.04 ft, below flood stage; 3,160 cubic feet per second Mar 24, 1968: 6.94 ft, below flood stage; 4,390 cubic feet per second Apr 25, 1968: 7.63 ft, action stage; 5,460 cubic feet per second Nov 27, 1979: 9.60 ft, minor flooding; 9,240 cubic feet per second Dec 30, 1984: 6.30 ft, below flood stage; 3,500 cubic feet per second Apr 1, 1987: 9.60 ft, minor flooding; 9,300 cubic feet per second Mar 27, 1988: 7.34 ft, below flood stage Apr 29, 1988: 6.72 ft, below flood stage; 4,080 cubic feet per second Mar 29, 1989: 6.40 ft, below flood stage Sep 20, 1989: 6.23 ft, below flood stage; 3,370 cubic feet per second Mar 14, 1990: 8.26 ft, minor flooding; 1,500 cubic feet per second Apr 4, 1990: 7.51 ft, action stage; 5,300 cubic feet per second Dec 24, 1990: 6.20 ft, below flood stage; 3,350 cubic feet per second Mar 4, 1991: 8.56 ft, minor flooding; 2,900 cubic feet per second Apr 22, 1991: 6.14 ft, below flood stage; 3,270 cubic feet per second Mar 11, 1992: 10.26 ft, moderate flooding Mar 30, 1993: 9.22 ft, minor flooding; 4,000 cubic feet per second Apr 17, 1993: 8.45 ft, minor flooding; 6,950 cubic feet per second Apr 23, 1993: 7.06 ft, below flood stage; 4,580 cubic feet per second Apr 17, 1994: 7.07 ft, below flood stage; 4,600 cubic feet per second Jan 21, 1995: 4.67 ft, below flood stage; 1,600 cubic feet per second Jan 20, 1996: 10.88 ft, moderate flooding; 9,600 cubic feet per second Nov 9, 1996: 10.93 ft, moderate flooding; 12,300 cubic feet per second Jan 9, 1998: 8.67 ft, minor flooding; 7,370 cubic feet per second Apr 4, 1999: 5.77 ft, below flood stage; 2,800 cubic feet per second Mar 29, 2000: 6.14 ft, below flood stage; 3,270 cubic feet per second Apr 23, 2001: 7.57 ft, action stage; 5,400 cubic feet per second May 14, 2002: 6.53 ft, below flood stage; 3,800 cubic feet per second Dec 25, 2007: 5.63 ft, below flood stage Feb 22, 2008: 7.59 ft, action stage Mar 12, 2009: 6.39 ft, below flood stage Jan 26, 2010: 9.85 ft, minor flooding Apr 27, 2011: 9.22 ft, minor flooding; 8,500 cubic feet per second Aug 29, 2011: 12.35 ft, major flooding; 15,212 cubic feet per second Oct 20, 2012: 6.95 ft, below flood stage; 4,580 cubic feet per second Jun 29, 2013: 7.94 ft, action stage; 6,070 cubic feet per second Apr 16, 2014: 7.90 ft, action stage; 6,000 cubic feet per second Jun 2, 2015: 6.31 ft, below flood stage; 3,590 cubic feet per second Feb 25, 2016: 7.32 ft, below flood stage Feb 26, 2017: 7.40 ft, below flood stage; 3,400 cubic feet per second Jan 13, 2018: 8.14 ft, minor flooding; 858 cubic feet per second Nov 1, 2019: 9.15 ft, minor flooding; 8,360 cubic feet per second Dec 26, 2020: 8.38 ft, minor flooding; 6,870 cubic feet per second Nov 1, 2021: 6.31 ft, below flood stage; 3,600 cubic feet per second Feb 24, 2022: 8.95 ft, minor flooding; 1,290 cubic feet per second Dec 19, 2023: 11.00 ft, moderate flooding; 12,500 cubic feet per second Jul 11, 2024: 8.34 ft, minor flooding; 6,790 cubic feet per second Highest, 12.35 ft, Aug 29, 2011 1940 1960 1980 2000 2020 Crests at or above flood stage, by decade Crests at or above flood stage per decade, Boquet River above Willsboro 1920s: 3 1930s: 2 1940s: 1 1950s: 1 1960s: 1 1970s: 1 1980s: 1 1990s: 8 8 2000s: 0 2010s: 5 2020s: 4 1920s 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 Essex County Essex County: every hazard · River floods across the country · New York
NOAA National Water Prediction Service, gauge WLBN6, 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.