The Susquehanna River at Conklin crested at major flood stage 2 times among the 168 crests the National Weather Service lists from 1914 to 2025. The highest, 25.02 ft on June 28, 2006, was major flooding, 13.02 feet above flood stage. 17 other gauges on the Susquehanna River crested above flood stage within a week of it, 4 at their own highest listed crest.
The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.
Flood categories, Susquehanna River at Conklin
Action stage
10.0
0
—
The level at which the NWS or its partners begin to take action
Flood stage (minor)
12.0
121
May 7, 2025
Minimal or no property damage, but possibly some public threat
Moderate flood stage
15.0
45
Dec 19, 2023
Some inundation of structures and roads near the stream
Major flood stage
20.0
2
Sep 8, 2011
Extensive inundation of structures and roads
03
Every listed crest
168 crests from 1914 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.
Crests at or above flood stage, by decade
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.
20 crests measured on an earlier gauge datum are left out: 18.30 ft on Mar 28, 1913; 16.49 ft on Apr 2, 1916; 16.90 ft on Sep 20, 1924; 17.60 ft on Mar 17, 1929; 16.95 ft on Jul 9, 1935; 20.14 ft on Mar 18, 1936; and more.
04
Highest crests
The 50 highest of 168 listed crests.
Highest listed crests, Susquehanna River at Conklin
1
Jun 28, 2006
25.02
+13.02
Major
76,800
2
Sep 8, 2011
23.94
+11.94
Major
71,500
3
Sep 18, 2004
19.01
+7.01
Moderate
54,693
4
Dec 31, 1942
18.76
+6.76
Moderate
48,600
5
Apr 3, 2005
18.08
+6.08
Moderate
49,426
6
Mar 30, 1914
18.00
+6.00
Moderate
47,000
7
Apr 1, 1993
17.91
+5.91
Moderate
48,500
8
Jan 20, 1996
17.55
+5.55
Moderate
45,000
9
Mar 7, 1979
17.25
+5.25
Moderate
—
10
Dec 14, 1983
17.17
+5.17
Moderate
—
11
Mar 15, 1986
17.10
+5.10
Moderate
—
12
Feb 12, 1925
17.04
+5.04
Moderate
44,900
13
Mar 13, 1936
16.94
+4.94
Moderate
41,900
14
Mar 16, 1977
16.90
+4.90
Moderate
—
15
Oct 19, 1927
16.88
+4.88
Moderate
43,500
16
Sep 30, 1924
16.86
+4.86
Moderate
44,000
17
Mar 13, 1920
16.79
+4.79
Moderate
—
18
Feb 11, 1981
16.70
+4.70
Moderate
—
19
Apr 22, 1929
16.37
+4.37
Moderate
40,800
20
Aug 28, 2011
16.34
+4.34
Moderate
38,420
21
Nov 14, 1935
16.28
+4.28
Moderate
38,600
22
Oct 19, 1977
16.28
+4.28
Moderate
—
23
Apr 11, 1993
16.21
+4.21
Moderate
40,000
24
Dec 4, 1950
16.20
+4.20
Moderate
36,100
25
Jul 8, 1915
16.15
+4.15
Moderate
40,500
26
Aug 14, 2018
16.15
+4.15
Moderate
37,778
27
Apr 10, 1940
16.11
+4.11
Moderate
34,900
28
Nov 29, 1921
16.03
+4.03
Moderate
39,900
29
Sep 23, 1938
15.89
+3.89
Moderate
34,100
30
Dec 25, 2020
15.88
+3.88
Moderate
36,746
31
Mar 17, 1948
15.82
+3.82
Moderate
34,400
32
Mar 19, 1943
15.81
+3.81
Moderate
34,300
33
Feb 28, 2000
15.78
+3.78
Moderate
38,000
34
Apr 6, 1940
15.76
+3.76
Moderate
33,500
35
Jan 25, 1979
15.70
+3.70
Moderate
—
36
Feb 21, 1939
15.64
+3.64
Moderate
33,100
37
Mar 9, 1946
15.49
+3.49
Moderate
32,900
38
Feb 15, 1984
15.48
+3.48
Moderate
—
39
May 28, 1946
15.46
+3.46
Moderate
32,700
40
Jan 10, 1998
15.42
+3.42
Moderate
—
41
Jan 11, 1935
15.40
+3.40
Moderate
34,400
42
Apr 7, 2017
15.11
+3.11
Moderate
33,867
43
Mar 29, 2005
15.09
+3.09
Moderate
35,000
44
Dec 19, 2023
15.09
+3.09
Moderate
33,800
45
Mar 11, 2011
15.06
+3.06
Moderate
33,600
46
Mar 29, 1920
15.05
+3.05
Moderate
35,200
47
Apr 6, 1947
15.04
+3.04
Moderate
31,000
48
Apr 28, 2011
14.98
+2.98
Minor
33,300
49
Jan 24, 1999
14.89
+2.89
Minor
—
50
Apr 5, 1950
14.84
+2.84
Minor
30,200
05
The worst floods along the Susquehanna River
For this gauge's highest crests, the other gauges on the Susquehanna River that crested above flood stage within a week.
June 28, 2006: 25.02 ft here, major flooding
SidneyNY · Jun 28, 2006 · 988.30 ft · Major · its highest
NOAA National Water Prediction Service, gauge CKLN6, 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.