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Unadilla River at Rockdale

Highest listed crest 14.22 ftFlood stage 11.0 ft30 crests since 1932

The Unadilla River at Rockdale crested at major flood stage 2 times among the 30 crests the National Weather Service lists from 1932 to 2011. The highest, 14.22 ft on September 8, 2011, was major flooding, 3.22 feet above flood stage.

The gauge

Highest listed crest
14.22 ft
September 8, 2011; 21,100 cubic feet per second
Flood stage
11.0 ft
Major flooding from 13.0 ft
Crests at major
2
68th of 160 gauges in New York
Most recent flood crest
September 8, 2011
14.22 ft, major flooding
Location
Chenango County
New York

Flood stages

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

Flood categories, Unadilla River at Rockdale
Action stage8.00—The level at which the NWS or its partners begin to take action
Flood stage (minor)11.022Apr 4, 2005Minimal or no property damage, but possibly some public threat
Moderate flood stage12.06Jan 19, 1996Some inundation of structures and roads near the stream
Major flood stage13.02Sep 8, 2011Extensive inundation of structures and roads

Every listed crest

30 crests from 1932 to 2011. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Unadilla River at Rockdale, 1932 to 2011 1112131415ft Flood stage 11.0 ftMajor 13.0 ft Oct 7, 1932: 11.00 ft, minor flooding; 10,400 cubic feet per secondApr 1, 1940: 11.92 ft, minor flooding; 13,400 cubic feet per secondApr 9, 1940: 11.16 ft, minor flooding; 11,400 cubic feet per secondDec 31, 1942: 12.98 ft, moderate flooding; 17,400 cubic feet per secondMar 18, 1943: 12.07 ft, moderate flooding; 14,100 cubic feet per secondMar 18, 1944: 11.00 ft, minor flooding; 10,600 cubic feet per secondMar 21, 1948: 11.86 ft, minor flooding; 12,800 cubic feet per secondSep 2, 1950: 11.77 ft, minor flooding; 12,500 cubic feet per secondApr 6, 1956: 11.54 ft, minor flooding; 13,100 cubic feet per secondJan 22, 1959: 11.36 ft, minor flooding; 12,700 cubic feet per secondApr 5, 1960: 11.61 ft, minor flooding; 13,300 cubic feet per secondFeb 26, 1961: 11.54 ft, minor flooding; 13,100 cubic feet per secondApr 1, 1962: 11.04 ft, minor flooding; 11,800 cubic feet per secondMar 27, 1963: 11.12 ft, minor flooding; 12,100 cubic feet per secondMar 6, 1964: 12.30 ft, moderate flooding; 15,200 cubic feet per secondMar 14, 1977: 12.64 ft, moderate flooding; 16,200 cubic feet per secondOct 18, 1977: 11.63 ft, minor flooding; 13,400 cubic feet per secondMar 26, 1979: 12.62 ft, moderate flooding; 16,300 cubic feet per secondDec 14, 1983: 11.60 ft, minor flooding; 13,400 cubic feet per secondFeb 16, 1984: 11.48 ft, minor flooding; 13,000 cubic feet per secondMar 16, 1986: 11.47 ft, minor flooding; 13,000 cubic feet per secondMar 31, 1993: 11.60 ft, minor flooding; 12,700 cubic feet per secondApr 11, 1993: 11.89 ft, minor flooding; 14,000 cubic feet per secondJan 19, 1996: 12.24 ft, moderate flooding; 13,900 cubic feet per secondJan 9, 1998: 11.16 ft, minor flooding; 12,000 cubic feet per secondFeb 28, 2000: 11.81 ft, minor flooding; 13,800 cubic feet per secondApr 10, 2001: 11.04 ft, minor flooding; 11,800 cubic feet per secondApr 4, 2005: 11.83 ft, minor flooding; 13,865 cubic feet per secondJun 29, 2006: 13.96 ft, major flooding; 23,100 cubic feet per secondSep 8, 2011: 14.22 ft, major flooding; 21,100 cubic feet per second Highest, 14.22 ft, Sep 8, 2011 19401950196019701980199020002010

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Unadilla River at Rockdale 1930s: 1 1940s: 6 6 1950s: 3 1960s: 5 1970s: 3 1980s: 3 1990s: 4 2000s: 4 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.

Highest crests

Highest listed crests, Unadilla River at Rockdale
1Sep 8, 201114.22+3.22Major21,100
2Jun 29, 200613.96+2.96Major23,100
3Dec 31, 194212.98+1.98Moderate17,400
4Mar 14, 197712.64+1.64Moderate16,200
5Mar 26, 197912.62+1.62Moderate16,300
6Mar 6, 196412.30+1.30Moderate15,200
7Jan 19, 199612.24+1.24Moderate13,900
8Mar 18, 194312.07+1.07Moderate14,100
9Apr 1, 194011.92+0.92Minor13,400
10Apr 11, 199311.89+0.89Minor14,000
11Mar 21, 194811.86+0.86Minor12,800
12Apr 4, 200511.83+0.83Minor13,865
13Feb 28, 200011.81+0.81Minor13,800
14Sep 2, 195011.77+0.77Minor12,500
15Oct 18, 197711.63+0.63Minor13,400
16Apr 5, 196011.61+0.61Minor13,300
17Dec 14, 198311.60+0.60Minor13,400
18Mar 31, 199311.60+0.60Minor12,700
19Apr 6, 195611.54+0.54Minor13,100
20Feb 26, 196111.54+0.54Minor13,100
21Feb 16, 198411.48+0.48Minor13,000
22Mar 16, 198611.47+0.47Minor13,000
23Jan 22, 195911.36+0.36Minor12,700
24Apr 9, 194011.16+0.16Minor11,400
25Jan 9, 199811.16+0.16Minor12,000
26Mar 27, 196311.12+0.12Minor12,100
27Apr 1, 196211.04+0.04Minor11,800
28Apr 10, 200111.04+0.04Minor11,800
29Oct 7, 193211.000.00Minor10,400
30Mar 18, 194411.000.00Minor10,600

Other gauges in Chenango County

Flood gauges in Chenango County
Greene13.022.00 ft, Jul 8, 19355
Norwich9.012.80 ft, Jun 28, 20062
Oxford16.522.51 ft, Jun 28, 20062
Sherburne8.511.64 ft, Sep 8, 20116
Bainbridge15.027.05 ft, Jun 29, 20062

Chenango County: every hazard · River floods across the country · New York

NOAA National Water Prediction Service, gauge RCKN6, 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.