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Salt River (MO) at New London

Highest listed crest 31.80 ftFlood stage 19.0 ft78 crests since 1935

The Salt River (MO) at New London crested at major flood stage 7 times among the 78 crests the National Weather Service lists from 1935 to 2010. The highest, 31.80 ft on April 22, 1973, was major flooding, 12.80 feet above flood stage.

The gauge

Highest listed crest
31.80 ft
April 22, 1973; 107,000 cubic feet per second
Flood stage
19.0 ft
Major flooding from 27.0 ft
Crests at major
7
29th of 173 gauges in Missouri
Most recent flood crest
July 20, 2010
20.44 ft, minor flooding
Location
Ralls County
Near Hannibal (6.8 mi)

Flood stages

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

Flood categories, Salt River (MO) at New London
Action stage17.07May 24, 1995The level at which the NWS or its partners begin to take action
Flood stage (minor)19.028Jul 20, 2010Minimal or no property damage, but possibly some public threat
Moderate flood stage25.06Apr 26, 1975Some inundation of structures and roads near the stream
Major flood stage27.07Aug 1, 2008Extensive inundation of structures and roads

Every listed crest

78 crests from 1935 to 2010. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Salt River (MO) at New London, 1935 to 2010 010203040ft Flood stage 19.0 ftMajor 27.0 ft May 4, 1935: 20.60 ft, minor flooding; 28,900 cubic feet per secondFeb 28, 1936: 22.90 ft, minor flooding; 36,500 cubic feet per secondFeb 21, 1937: 15.77 ft, below flood stage; 16,900 cubic feet per secondMay 24, 1938: 18.31 ft, action stage; 22,400 cubic feet per secondJun 22, 1939: 22.47 ft, minor flooding; 31,000 cubic feet per secondMar 3, 1940: 13.97 ft, below flood stage; 12,600 cubic feet per secondApr 20, 1941: 16.37 ft, below flood stage; 17,600 cubic feet per secondJun 29, 1942: 25.55 ft, moderate flooding; 43,500 cubic feet per secondMay 19, 1943: 27.18 ft, major flooding; 51,600 cubic feet per secondApr 25, 1944: 26.48 ft, moderate flooding; 47,900 cubic feet per secondJun 10, 1945: 23.20 ft, minor flooding; 33,800 cubic feet per secondJan 10, 1946: 22.11 ft, minor flooding; 30,200 cubic feet per secondJun 21, 1947: 23.00 ft, minor flooding; 31,700 cubic feet per secondMar 23, 1948: 16.96 ft, below flood stage; 16,800 cubic feet per secondJul 20, 1949: 15.65 ft, below flood stage; 14,600 cubic feet per secondDec 23, 1949: 19.78 ft, minor flooding; 22,400 cubic feet per secondMar 18, 1951: 19.91 ft, minor flooding; 23,500 cubic feet per secondMar 19, 1952: 19.13 ft, minor flooding; 21,800 cubic feet per secondApr 1, 1953: 17.10 ft, action stage; 17,800 cubic feet per secondApr 22, 1954: 10.64 ft, below flood stage; 7,700 cubic feet per secondFeb 20, 1955: 20.40 ft, minor flooding; 23,500 cubic feet per secondApr 30, 1956: 18.43 ft, action stage; 19,900 cubic feet per secondJun 15, 1957: 20.44 ft, minor flooding; 24,600 cubic feet per secondAug 2, 1958: 29.92 ft, major flooding; 64,700 cubic feet per secondFeb 11, 1959: 21.90 ft, minor flooding; 25,600 cubic feet per secondMar 30, 1960: 22.55 ft, minor flooding; 29,000 cubic feet per secondMay 9, 1961: 25.70 ft, moderate flooding; 39,600 cubic feet per secondMar 22, 1962: 23.08 ft, minor flooding; 30,500 cubic feet per secondMar 5, 1963: 17.22 ft, action stage; 16,800 cubic feet per secondApr 6, 1964: 19.15 ft, minor flooding; 20,700 cubic feet per secondSep 18, 1965: 23.61 ft, minor flooding; 32,000 cubic feet per secondJun 14, 1966: 21.76 ft, minor flooding; 26,700 cubic feet per secondJul 12, 1967: 25.28 ft, moderate flooding; 38,100 cubic feet per secondAug 5, 1968: 24.37 ft, minor flooding; 34,700 cubic feet per secondJul 10, 1969: 26.60 ft, moderate flooding; 43,600 cubic feet per secondOct 14, 1969: 30.62 ft, major flooding; 79,500 cubic feet per secondSep 25, 1970: 27.60 ft, major floodingMar 16, 1972: 15.05 ft, below flood stage; 13,300 cubic feet per secondMar 27, 1973: 24.51 ft, minor floodingApr 22, 1973: 31.80 ft, major flooding; 107,000 cubic feet per secondJun 2, 1974: 24.69 ft, minor flooding; 37,600 cubic feet per secondApr 26, 1975: 26.63 ft, moderate floodingMar 7, 1976: 23.60 ft, minor floodingMay 7, 1977: 18.17 ft, action stage; 19,000 cubic feet per secondMar 30, 1978: 23.51 ft, minor flooding; 34,200 cubic feet per secondApr 13, 1979: 24.40 ft, minor flooding; 37,800 cubic feet per secondJun 5, 1980: 13.16 ft, below flood stage; 10,440 cubic feet per secondJul 29, 1981: 31.09 ft, major flooding; 74,200 cubic feet per secondJun 12, 1982: 19.16 ft, minor flooding; 22,100 cubic feet per secondDec 7, 1982: 21.40 ft, minor floodingApr 6, 1983: 21.54 ft, minor flooding; 27,600 cubic feet per secondApr 9, 1984: 15.49 ft, below flood stage; 15,100 cubic feet per secondNov 18, 1985: 16.55 ft, below flood stage; 19,100 cubic feet per secondOct 3, 1986: 13.65 ft, below flood stage; 13,400 cubic feet per secondFeb 5, 1988: 10.04 ft, below flood stage; 7,710 cubic feet per secondJul 28, 1989: 8.87 ft, below flood stage; 6,010 cubic feet per secondMar 15, 1990: 13.68 ft, below flood stage; 13,400 cubic feet per secondMay 15, 1991: 15.32 ft, below flood stage; 16,600 cubic feet per secondMay 8, 1992: 10.68 ft, below flood stage; 8,560 cubic feet per secondAug 12, 1993: 17.22 ft, action stage; 17,900 cubic feet per secondOct 5, 1993: 13.63 ft, below flood stage; 12,000 cubic feet per secondMay 24, 1995: 18.19 ft, action stage; 18,500 cubic feet per secondJul 7, 1996: 11.70 ft, below flood stage; 9,870 cubic feet per secondFeb 21, 1997: 14.36 ft, below flood stage; 14,500 cubic feet per secondApr 21, 1998: 12.60 ft, below flood stage; 11,900 cubic feet per secondFeb 7, 1999: 13.62 ft, below flood stage; 13,300 cubic feet per secondAug 31, 2000: 9.02 ft, below flood stage; 6,200 cubic feet per secondMar 7, 2001: 11.73 ft, below flood stage; 10,200 cubic feet per secondMay 6, 2002: 15.14 ft, below flood stage; 15,800 cubic feet per secondMay 19, 2003: 10.68 ft, below flood stage; 8,570 cubic feet per secondAug 27, 2004: 13.77 ft, below flood stage; 13,500 cubic feet per secondJan 13, 2005: 16.23 ft, below flood stage; 17,700 cubic feet per secondJun 3, 2006: 10.59 ft, below flood stage; 8,440 cubic feet per secondMar 1, 2007: 12.34 ft, below flood stage; 11,200 cubic feet per secondAug 1, 2008: 27.46 ft, major flooding; 55,500 cubic feet per secondSep 14, 2008: 20.61 ft, minor flooding; 25,700 cubic feet per secondApr 27, 2009: 16.82 ft, below flood stage; 18,800 cubic feet per secondJul 20, 2010: 20.44 ft, minor flooding; 26,600 cubic feet per second Highest, 31.80 ft, Apr 22, 1973 19401950196019701980199020002010

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Salt River (MO) at New London 1930s: 3 1940s: 7 1950s: 6 1960s: 10 10 1970s: 8 1980s: 4 1990s: 0 2000s: 2 2010s: 1 1930s1940s1950s1960s1970s1980s1990s2000s2010s
  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.
  3. 13 crests measured on an earlier gauge datum are left out: 27.60 ft on Jul 14, 1858; 24.60 ft on Mar 16, 1922; 14.90 ft on Mar 12, 1923; 13.70 ft on Jun 13, 1924; 14.15 ft on Mar 19, 1925; 26.70 ft on Sep 6, 1926; and more.

Highest crests

The 50 highest of 78 listed crests.

Highest listed crests, Salt River (MO) at New London
1Apr 22, 197331.80+12.80Major107,000
2Jul 29, 198131.09+12.09Major74,200
3Oct 14, 196930.62+11.62Major79,500
4Aug 2, 195829.92+10.92Major64,700
5Sep 25, 197027.60+8.60Major—
6Aug 1, 200827.46+8.46Major55,500
7May 19, 194327.18+8.18Major51,600
8Apr 26, 197526.63+7.63Moderate—
9Jul 10, 196926.60+7.60Moderate43,600
10Apr 25, 194426.48+7.48Moderate47,900
11May 9, 196125.70+6.70Moderate39,600
12Jun 29, 194225.55+6.55Moderate43,500
13Jul 12, 196725.28+6.28Moderate38,100
14Jun 2, 197424.69+5.69Minor37,600
15Mar 27, 197324.51+5.51Minor—
16Apr 13, 197924.40+5.40Minor37,800
17Aug 5, 196824.37+5.37Minor34,700
18Sep 18, 196523.61+4.61Minor32,000
19Mar 7, 197623.60+4.60Minor—
20Mar 30, 197823.51+4.51Minor34,200
21Jun 10, 194523.20+4.20Minor33,800
22Mar 22, 196223.08+4.08Minor30,500
23Jun 21, 194723.00+4.00Minor31,700
24Feb 28, 193622.90+3.90Minor36,500
25Mar 30, 196022.55+3.55Minor29,000
26Jun 22, 193922.47+3.47Minor31,000
27Jan 10, 194622.11+3.11Minor30,200
28Feb 11, 195921.90+2.90Minor25,600
29Jun 14, 196621.76+2.76Minor26,700
30Apr 6, 198321.54+2.54Minor27,600
31Dec 7, 198221.40+2.40Minor—
32Sep 14, 200820.61+1.61Minor25,700
33May 4, 193520.60+1.60Minor28,900
34Jun 15, 195720.44+1.44Minor24,600
35Jul 20, 201020.44+1.44Minor26,600
36Feb 20, 195520.40+1.40Minor23,500
37Mar 18, 195119.91+0.91Minor23,500
38Dec 23, 194919.78+0.78Minor22,400
39Jun 12, 198219.16+0.16Minor22,100
40Apr 6, 196419.15+0.15Minor20,700
41Mar 19, 195219.13+0.13Minor21,800
42Apr 30, 195618.43−0.57Action19,900
43May 24, 193818.31−0.69Action22,400
44May 24, 199518.19−0.81Action18,500
45May 7, 197718.17−0.83Action19,000
46Mar 5, 196317.22−1.78Action16,800
47Aug 12, 199317.22−1.78Action17,900
48Apr 1, 195317.10−1.90Action17,800
49Mar 23, 194816.96−2.04Below flood stage16,800
50Apr 27, 200916.82−2.18Below flood stage18,800

Other gauges in Ralls County

Flood gauges in Ralls County
Saverton Lock and Dam 2216.029.58 ft, Jul 25, 19939

Ralls County: every hazard · River floods across the country · Missouri

NOAA National Water Prediction Service, gauge NLDM7, 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.