Green River (KY) at Calhoun Lock and Dam

Last updated: Apr 4, 2025, 11:34 AM UTC

Flood Warning

Flood Watch

US Geological Survey
Observations courtesy of U.S. Geological Survey

Scale to Flood Categories

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Observed (OBS) 04/04/2025 6:00 AM CDT

Official Forecast (FCST) 04/03/2025 9:38 PM CDT

Record: 43.8 ft

Low Threshold: 9.5 ft

CATEGORY STAGE

Major Flooding 32 ft

Moderate Flooding 26 ft

Minor Flooding 23 ft

Action 18 ft

Reliability of the Forecast:

NOTE: Forecasts are issued routinely year-round.

River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 48 hours into the future from the forecast issuance time.
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	CATEGORY	STAGE
	Major Flooding	32 ft
	Moderate Flooding	26 ft
	Minor Flooding	23 ft
	Action	18 ft

Flood Impacts 🅘

42.4 - This flood will exceed the highest stage on record. 60 percent of McLean county is inundated.
34 - State Road 81 south of Rumsey is flooded and closed.
33 - The entire town of Rumsey is flooded.

Gauge Info

Coordinates	37.5339, -87.2639
RFC	OHRFC
State	KY
WFO	PAH
County	McLean
Data Provider(s)
US Geological Survey	USGS--Water Resources of the United States
USGS	03320000

Gauge Location

Recent Crests

1.	32.35 ft	on 02-23-2025	(P)
2.	24.38 ft	on 05-30-2024
3.	25.40 ft	on 02-28-2022
4.	24.59 ft	on 01-13-2022
5.	29.69 ft	on 03-09-2021

Historic Crests

1.	43.75 ft	on 01-27-1937
2.	36.80 ft	on 01-01-1913
3.	36.30 ft	on 01-16-1950
4.	34.37 ft	on 03-11-1997
5.	34.01 ft	on 05-07-2011

Vertical Datum Table

type	NGVD29
major Flooding	385.95 ft
moderate Flooding	379.95 ft
minor Flooding	376.95 ft
action	371.95 ft
Latest Value	376.03 ft
Gauge Zero	353.95 ft

Gauge Photos

Photo 1 of 5

Calhoun Lock and Dam

Probability Information

Photo 1 of 3

Weekly Chance of Exceeding Levels
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Chance of Exceeding Levels During Entire Period
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Short Range Forecast Uncertainty
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Unique Local Info

How low could the river get?

Collaborative Agencies

The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.

WFO Information

Weather Forecast Office

Paducah

8250 Highway 3520

West Paducah, KY 42086-6440

(270) 744-6440

Ask Questions/Webmaster

Official Homepage

1.	32.35 ft	on 02-23-2025	(P)
2.	24.38 ft	on 05-30-2024
3.	25.40 ft	on 02-28-2022
4.	24.59 ft	on 01-13-2022
5.	29.69 ft	on 03-09-2021
6.	27.25 ft	on 02-18-2020
7.	30.69 ft	on 03-01-2019
8.	31.67 ft	on 03-01-2018
9.	23.81 ft	on 07-13-2016
10.	29.78 ft	on 03-17-2015
11.	24.52 ft	on 04-08-2014
12.	34.01 ft	on 05-07-2011
13.	31.46 ft	on 05-10-2010
14.	24.51 ft	on 05-13-2009
15.	28.99 ft	on 04-10-2008
16.	28.02 ft	on 12-18-2007
17.	26.29 ft	on 01-12-2005
18.	23.98 ft	on 06-04-2004
19.	27.93 ft	on 02-25-2003
20.	27.01 ft	on 03-27-2002
21.	27.47 ft	on 01-29-1999
22.	23.80 ft	on 04-22-1998
23.	34.37 ft	on 03-11-1997
24.	23.81 ft	on 12-21-1996
25.	25.30 ft	on 04-19-1994
26.	27.20 ft	on 03-17-1994
27.	24.80 ft	on 02-01-1994
28.	29.84 ft	on 01-05-1991
29.	29.42 ft	on 02-19-1990
30.	33.37 ft	on 02-24-1989
31.	23.20 ft	on 11-24-1988
32.	23.90 ft	on 03-05-1987
33.	32.40 ft	on 05-15-1984
34.	31.20 ft	on 05-08-1983
35.	23.55 ft	on 01-26-1982
36.	30.40 ft	on 04-16-1979
37.	32.47 ft	on 12-16-1978
38.	31.14 ft	on 03-20-1975
39.	30.01 ft	on 01-18-1974
40.	26.05 ft	on 04-06-1970
41.	28.81 ft	on 03-16-1967
42.	33.96 ft	on 03-17-1964
43.	33.97 ft	on 03-10-1962
44.	30.71 ft	on 03-13-1961
45.	22.65 ft	on 07-03-1960
46.	28.20 ft	on 01-27-1959
47.	31.10 ft	on 11-27-1957
48.	32.60 ft	on 02-25-1956
49.	32.20 ft	on 03-29-1955
50.	20.40 ft	on 04-21-1954
51.	28.50 ft	on 05-26-1953
52.	32.50 ft	on 03-31-1952
53.	32.00 ft	on 01-21-1951
54.	36.30 ft	on 01-16-1950
55.	32.30 ft	on 02-24-1949
56.	30.30 ft	on 02-22-1948
57.	24.30 ft	on 01-08-1947
58.	29.20 ft	on 02-19-1946
59.	33.60 ft	on 03-08-1945
60.	25.60 ft	on 04-17-1944
61.	32.30 ft	on 03-27-1943
62.	27.30 ft	on 04-15-1942
63.	29.20 ft	on 04-25-1940
64.	32.90 ft	on 02-11-1939
65.	21.92 ft	on 08-04-1938
66.	43.75 ft	on 01-27-1937
67.	30.10 ft	on 04-15-1936
68.	32.90 ft	on 04-07-1935
69.	27.10 ft	on 03-10-1934
70.	29.40 ft	on 01-30-1933
71.	32.20 ft	on 02-06-1932
72.	36.80 ft	on 01-01-1913

1.	43.75 ft	on 01-27-1937
2.	36.80 ft	on 01-01-1913
3.	36.30 ft	on 01-16-1950
4.	34.37 ft	on 03-11-1997
5.	34.01 ft	on 05-07-2011
6.	33.97 ft	on 03-10-1962
7.	33.96 ft	on 03-17-1964
8.	33.60 ft	on 03-08-1945
9.	33.37 ft	on 02-24-1989
10.	32.90 ft	on 02-11-1939
11.	32.90 ft	on 04-07-1935
12.	32.60 ft	on 02-25-1956
13.	32.50 ft	on 03-31-1952
14.	32.47 ft	on 12-16-1978
15.	32.40 ft	on 05-15-1984
16.	32.35 ft	on 02-23-2025	(P)
17.	32.30 ft	on 02-24-1949
18.	32.30 ft	on 03-27-1943
19.	32.20 ft	on 03-29-1955
20.	32.20 ft	on 02-06-1932
21.	32.00 ft	on 01-21-1951
22.	31.67 ft	on 03-01-2018
23.	31.46 ft	on 05-10-2010
24.	31.20 ft	on 05-08-1983
25.	31.14 ft	on 03-20-1975
26.	31.10 ft	on 11-27-1957
27.	30.71 ft	on 03-13-1961
28.	30.69 ft	on 03-01-2019
29.	30.40 ft	on 04-16-1979
30.	30.30 ft	on 02-22-1948
31.	30.10 ft	on 04-15-1936
32.	30.01 ft	on 01-18-1974
33.	29.84 ft	on 01-05-1991
34.	29.78 ft	on 03-17-2015
35.	29.69 ft	on 03-09-2021
36.	29.42 ft	on 02-19-1990
37.	29.40 ft	on 01-30-1933
38.	29.20 ft	on 02-19-1946
39.	29.20 ft	on 04-25-1940
40.	28.99 ft	on 04-10-2008
41.	28.81 ft	on 03-16-1967
42.	28.50 ft	on 05-26-1953
43.	28.20 ft	on 01-27-1959
44.	28.02 ft	on 12-18-2007
45.	27.93 ft	on 02-25-2003
46.	27.47 ft	on 01-29-1999
47.	27.30 ft	on 04-15-1942
48.	27.25 ft	on 02-18-2020
49.	27.20 ft	on 03-17-1994
50.	27.10 ft	on 03-10-1934
51.	27.01 ft	on 03-27-2002
52.	26.29 ft	on 01-12-2005
53.	26.05 ft	on 04-06-1970
54.	25.60 ft	on 04-17-1944
55.	25.40 ft	on 02-28-2022
56.	25.30 ft	on 04-19-1994
57.	24.80 ft	on 02-01-1994
58.	24.59 ft	on 01-13-2022
59.	24.52 ft	on 04-08-2014
60.	24.51 ft	on 05-13-2009
61.	24.38 ft	on 05-30-2024
62.	24.30 ft	on 01-08-1947
63.	23.98 ft	on 06-04-2004
64.	23.90 ft	on 03-05-1987
65.	23.81 ft	on 07-13-2016
66.	23.81 ft	on 12-21-1996
67.	23.80 ft	on 04-22-1998
68.	23.55 ft	on 01-26-1982
69.	23.20 ft	on 11-24-1988
70.	22.65 ft	on 07-03-1960
71.	21.92 ft	on 08-04-1938
72.	20.40 ft	on 04-21-1954