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Green River (KY) at Calhoun Lock and Dam

Highest listed crest 43.75 ftFlood stage 23.0 ft73 crests since 1913

The Green River (KY) at Calhoun Lock and Dam crested at major flood stage 22 times among the 73 crests the National Weather Service lists from 1913 to 2025. The highest, 43.75 ft on January 27, 1937, was major flooding, 20.75 feet above flood stage. 3 other gauges on the Green River (KY) crested above flood stage within a week of it, 2 at their own highest listed crest.

The gauge

Highest listed crest
43.75 ft
January 27, 1937; 208,000 cubic feet per second
Flood stage
23.0 ft
Major flooding from 32.0 ft
Crests at major
22
2nd of 72 gauges in Kentucky
Most recent flood crest
April 13, 2025
35.89 ft, major flooding
Location
McLean County
Kentucky

Flood stages

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

Flood categories, Green River (KY) at Calhoun Lock and Dam
Action stage18.03Jul 3, 1960The level at which the NWS or its partners begin to take action
Flood stage (minor)23.016May 30, 2024Minimal or no property damage, but possibly some public threat
Moderate flood stage26.032Mar 9, 2021Some inundation of structures and roads near the stream
Major flood stage32.022Apr 13, 2025Extensive inundation of structures and roads

Every listed crest

73 crests from 1913 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Green River (KY) at Calhoun Lock and Dam, 1913 to 2025 202530354045ft Flood stage 23.0 ftMajor 32.0 ft Jan 1, 1913: 36.80 ft, major floodingFeb 6, 1932: 32.20 ft, major flooding; 80,000 cubic feet per secondJan 30, 1933: 29.40 ft, moderate flooding; 59,100 cubic feet per secondMar 10, 1934: 27.10 ft, moderate flooding; 51,100 cubic feet per secondApr 7, 1935: 32.90 ft, major flooding; 73,300 cubic feet per secondApr 15, 1936: 30.10 ft, moderate flooding; 53,000 cubic feet per secondJan 27, 1937: 43.75 ft, major flooding; 208,000 cubic feet per secondAug 4, 1938: 21.92 ft, action stage; 44,500 cubic feet per secondFeb 11, 1939: 32.90 ft, major flooding; 72,900 cubic feet per secondApr 25, 1940: 29.20 ft, moderate flooding; 49,300 cubic feet per secondApr 15, 1942: 27.30 ft, moderate flooding; 46,400 cubic feet per secondMar 27, 1943: 32.30 ft, major flooding; 67,600 cubic feet per secondApr 17, 1944: 25.60 ft, minor flooding; 40,100 cubic feet per secondMar 8, 1945: 33.60 ft, major flooding; 70,900 cubic feet per secondFeb 19, 1946: 29.20 ft, moderate flooding; 51,700 cubic feet per secondJan 8, 1947: 24.30 ft, minor flooding; 41,200 cubic feet per secondFeb 22, 1948: 30.30 ft, moderate flooding; 57,000 cubic feet per secondFeb 24, 1949: 32.30 ft, major flooding; 71,300 cubic feet per secondJan 16, 1950: 36.30 ft, major flooding; 86,300 cubic feet per secondJan 21, 1951: 32.00 ft, major flooding; 63,400 cubic feet per secondMar 31, 1952: 32.50 ft, major flooding; 72,000 cubic feet per secondMay 26, 1953: 28.50 ft, moderate flooding; 48,000 cubic feet per secondApr 21, 1954: 20.40 ft, action stage; 36,900 cubic feet per secondMar 29, 1955: 32.20 ft, major flooding; 66,800 cubic feet per secondFeb 25, 1956: 32.60 ft, major flooding; 67,000 cubic feet per secondNov 27, 1957: 31.10 ft, moderate flooding; 59,600 cubic feet per secondJan 27, 1959: 28.20 ft, moderate flooding; 42,200 cubic feet per secondJul 3, 1960: 22.65 ft, action stage; 41,400 cubic feet per secondMar 13, 1961: 30.71 ft, moderate floodingMar 10, 1962: 33.97 ft, major flooding; 106,000 cubic feet per secondMar 17, 1964: 33.96 ft, major flooding; 80,300 cubic feet per secondMar 16, 1967: 28.81 ft, moderate floodingApr 6, 1970: 26.05 ft, moderate flooding; 42,100 cubic feet per secondJan 18, 1974: 30.01 ft, moderate floodingMar 20, 1975: 31.14 ft, moderate floodingDec 16, 1978: 32.47 ft, major flooding; 73,800 cubic feet per secondApr 16, 1979: 30.40 ft, moderate floodingJan 26, 1982: 23.55 ft, minor flooding; 40,000 cubic feet per secondMay 8, 1983: 31.20 ft, moderate floodingMay 15, 1984: 32.40 ft, major flooding; 78,200 cubic feet per secondMar 5, 1987: 23.90 ft, minor floodingNov 24, 1988: 23.20 ft, minor flooding; 48,000 cubic feet per secondFeb 24, 1989: 33.37 ft, major flooding; 80,000 cubic feet per secondFeb 19, 1990: 29.42 ft, moderate flooding; 51,500 cubic feet per secondJan 5, 1991: 29.84 ft, moderate flooding; 50,600 cubic feet per secondFeb 1, 1994: 24.80 ft, minor floodingMar 17, 1994: 27.20 ft, moderate floodingApr 19, 1994: 25.30 ft, minor floodingDec 21, 1996: 23.81 ft, minor floodingMar 11, 1997: 34.37 ft, major floodingApr 22, 1998: 23.80 ft, minor floodingJan 29, 1999: 27.47 ft, moderate floodingMar 27, 2002: 27.01 ft, moderate floodingFeb 25, 2003: 27.93 ft, moderate floodingJun 4, 2004: 23.98 ft, minor flooding; 48,960 cubic feet per secondJan 12, 2005: 26.29 ft, moderate flooding; 52,722 cubic feet per secondDec 18, 2007: 28.02 ft, moderate flooding; 55,070 cubic feet per secondApr 10, 2008: 28.99 ft, moderate flooding; 58,516 cubic feet per secondMay 13, 2009: 24.51 ft, minor flooding; 46,087 cubic feet per secondMay 10, 2010: 31.46 ft, moderate flooding; 69,204 cubic feet per secondMay 7, 2011: 34.01 ft, major flooding; 89,106 cubic feet per secondApr 8, 2014: 24.52 ft, minor flooding; 46,112 cubic feet per secondMar 17, 2015: 29.78 ft, moderate flooding; 61,390 cubic feet per secondJul 13, 2016: 23.81 ft, minor flooding; 44,265 cubic feet per secondMar 1, 2018: 31.67 ft, moderate flooding; 87,256 cubic feet per secondMar 1, 2019: 30.69 ft, moderate flooding; 79,035 cubic feet per secondFeb 18, 2020: 27.25 ft, moderate flooding; 54,248 cubic feet per secondMar 9, 2021: 29.69 ft, moderate flooding; 69,166 cubic feet per secondJan 13, 2022: 24.59 ft, minor flooding; 51,310 cubic feet per secondFeb 28, 2022: 25.40 ft, minor flooding; 52,608 cubic feet per secondMay 30, 2024: 24.38 ft, minor flooding; 50,953 cubic feet per secondFeb 23, 2025: 32.35 ft, major flooding; 79,405 cubic feet per secondApr 13, 2025: 35.89 ft, major flooding Highest, 43.75 ft, Jan 27, 1937 192019401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Green River (KY) at Calhoun Lock and Dam 1910s: 1 1920s: 0 1930s: 7 1940s: 9 9 1950s: 8 1960s: 4 1970s: 5 1980s: 6 1990s: 9 2000s: 7 2010s: 7 2020s: 7 1910s1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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.

Highest crests

The 50 highest of 73 listed crests.

Highest listed crests, Green River (KY) at Calhoun Lock and Dam
1Jan 27, 193743.75+20.75Major208,000
2Jan 1, 191336.80+13.80Major—
3Jan 16, 195036.30+13.30Major86,300
4Apr 13, 202535.89+12.89Major—
5Mar 11, 199734.37+11.37Major—
6May 7, 201134.01+11.01Major89,106
7Mar 10, 196233.97+10.97Major106,000
8Mar 17, 196433.96+10.96Major80,300
9Mar 8, 194533.60+10.60Major70,900
10Feb 24, 198933.37+10.37Major80,000
11Apr 7, 193532.90+9.90Major73,300
12Feb 11, 193932.90+9.90Major72,900
13Feb 25, 195632.60+9.60Major67,000
14Mar 31, 195232.50+9.50Major72,000
15Dec 16, 197832.47+9.47Major73,800
16May 15, 198432.40+9.40Major78,200
17Feb 23, 202532.35+9.35Major79,405
18Mar 27, 194332.30+9.30Major67,600
19Feb 24, 194932.30+9.30Major71,300
20Feb 6, 193232.20+9.20Major80,000
21Mar 29, 195532.20+9.20Major66,800
22Jan 21, 195132.00+9.00Major63,400
23Mar 1, 201831.67+8.67Moderate87,256
24May 10, 201031.46+8.46Moderate69,204
25May 8, 198331.20+8.20Moderate—
26Mar 20, 197531.14+8.14Moderate—
27Nov 27, 195731.10+8.10Moderate59,600
28Mar 13, 196130.71+7.71Moderate—
29Mar 1, 201930.69+7.69Moderate79,035
30Apr 16, 197930.40+7.40Moderate—
31Feb 22, 194830.30+7.30Moderate57,000
32Apr 15, 193630.10+7.10Moderate53,000
33Jan 18, 197430.01+7.01Moderate—
34Jan 5, 199129.84+6.84Moderate50,600
35Mar 17, 201529.78+6.78Moderate61,390
36Mar 9, 202129.69+6.69Moderate69,166
37Feb 19, 199029.42+6.42Moderate51,500
38Jan 30, 193329.40+6.40Moderate59,100
39Apr 25, 194029.20+6.20Moderate49,300
40Feb 19, 194629.20+6.20Moderate51,700
41Apr 10, 200828.99+5.99Moderate58,516
42Mar 16, 196728.81+5.81Moderate—
43May 26, 195328.50+5.50Moderate48,000
44Jan 27, 195928.20+5.20Moderate42,200
45Dec 18, 200728.02+5.02Moderate55,070
46Feb 25, 200327.93+4.93Moderate—
47Jan 29, 199927.47+4.47Moderate—
48Apr 15, 194227.30+4.30Moderate46,400
49Feb 18, 202027.25+4.25Moderate54,248
50Mar 17, 199427.20+4.20Moderate—

The worst floods along the Green River (KY)

For this gauge's highest crests, the other gauges on the Green River (KY) that crested above flood stage within a week.

January 27, 1937: 43.75 ft here, major flooding

  • RochesterKY · Jan 27, 1937 · 61.60 ft · Major · its highest
  • WoodburyKY · Jan 24, 1937 · 52.67 ft · Major · its highest
  • MunfordvilleKY · Jan 23, 1937 · 50.40 ft · Moderate

January 1, 1913: 36.80 ft here, major flooding

January 16, 1950: 36.30 ft here, major flooding

  • RochesterKY · Jan 14, 1950 · 49.00 ft · Moderate

Gauges on the Green River (KY)

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Green River (KY)
MunfordvilleKY28.057.72 ft, Mar 1, 19621
Mammoth CaveKY32.059.66 ft, Apr 6, 20250
WoodburyKY26.052.67 ft, Jan 24, 193714
RochesterKY37.061.60 ft, Jan 27, 19375
ParadiseKY380.0403.65 ft, Mar 5, 19623
Calhoun Lock and Dam this gaugeKY23.043.75 ft, Jan 27, 193722

McLean County: every hazard · River floods across the country · Kentucky

NOAA National Water Prediction Service, gauge CALK2, 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.