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Hockanum River at East Hartford

Highest listed crest 13.78 ftFlood stage 9.0 ft40 crests since 1934

The Hockanum River at East Hartford crested at major flood stage 1 time among the 40 crests the National Weather Service lists from 1934 to 2021. The highest, 13.78 ft on September 21, 1938, was major flooding, 4.78 feet above flood stage.

The gauge

Highest listed crest
13.78 ft
September 21, 1938; 5,160 cubic feet per second
Flood stage
9.0 ft
Major flooding from 13.0 ft
Crests at major
1
18th of 26 gauges in Connecticut
Most recent flood crest
September 2, 2021
11.50 ft, moderate flooding
Location
Hartford County
Near Hartford (5.0 mi), New Britain (12.6 mi)

Flood stages

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

Flood categories, Hockanum River at East Hartford
Action stage7.021Apr 14, 2004The level at which the NWS or its partners begin to take action
Flood stage (minor)9.014Aug 19, 2021Minimal or no property damage, but possibly some public threat
Moderate flood stage11.04Sep 2, 2021Some inundation of structures and roads near the stream
Major flood stage13.01Sep 21, 1938Extensive inundation of structures and roads

Every listed crest

40 crests from 1934 to 2021. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Hockanum River at East Hartford, 1934 to 2021 68101214ft Flood stage 9.0 ftMajor 13.0 ft Mar 5, 1934: 8.29 ft, action stage; 19,206 cubic feet per secondMar 12, 1936: 8.06 ft, action stage; 18,106 cubic feet per secondSep 21, 1938: 13.78 ft, major flooding; 5,160 cubic feet per secondFeb 15, 1939: 8.25 ft, action stage; 13,406 cubic feet per secondJan 15, 1940: 7.53 ft, action stage; 14,106 cubic feet per secondFeb 8, 1941: 8.16 ft, action stage; 16,906 cubic feet per secondAug 19, 1955: 10.46 ft, minor flooding; 2,740 cubic feet per secondOct 16, 1955: 7.96 ft, action stage; 15,206 cubic feet per secondMar 6, 1959: 7.16 ft, action stage; 12,706 cubic feet per secondSep 12, 1960: 7.13 ft, action stage; 12,406 cubic feet per secondMar 13, 1962: 7.68 ft, action stage; 14,206 cubic feet per secondFeb 4, 1970: 9.13 ft, minor flooding; 2,020 cubic feet per secondFeb 3, 1973: 8.66 ft, action stage; 18,006 cubic feet per secondDec 21, 1973: 9.47 ft, minor flooding; 2,180 cubic feet per secondSep 26, 1975: 8.48 ft, action stage; 17,306 cubic feet per secondJan 28, 1976: 8.92 ft, action stage; 19,106 cubic feet per secondMar 23, 1977: 7.09 ft, action stage; 12,406 cubic feet per secondJan 26, 1978: 10.06 ft, minor flooding; 2,320 cubic feet per secondJan 25, 1979: 11.93 ft, moderate flooding; 3,400 cubic feet per secondMar 22, 1980: 8.60 ft, action stage; 17,406 cubic feet per secondJun 6, 1982: 10.85 ft, minor flooding; 2,680 cubic feet per secondApr 20, 1983: 9.66 ft, minor flooding; 1,990 cubic feet per secondMay 31, 1984: 9.85 ft, minor flooding; 2,070 cubic feet per secondApr 5, 1987: 7.72 ft, action stage; 12,706 cubic feet per secondOct 21, 1989: 8.30 ft, action stage; 14,405 cubic feet per secondAug 19, 1991: 8.13 ft, action stage; 15,206 cubic feet per secondApr 16, 1996: 9.54 ft, minor flooding; 2,030 cubic feet per secondMar 9, 1998: 7.70 ft, action stage; 14,006 cubic feet per secondJan 19, 1999: 7.40 ft, action stage; 12,906 cubic feet per secondJun 17, 2001: 7.31 ft, action stage; 11,806 cubic feet per secondApr 14, 2004: 7.52 ft, action stage; 13,006 cubic feet per secondOct 15, 2005: 12.03 ft, moderate floodingDec 12, 2008: 9.43 ft, minor floodingMar 7, 2011: 9.54 ft, minor flooding; 2,237 cubic feet per secondAug 28, 2011: 9.06 ft, minor flooding; 2,016 cubic feet per secondDec 25, 2020: 9.20 ft, minor flooding; 2,078 cubic feet per secondJul 9, 2021: 10.74 ft, minor flooding; 2,782 cubic feet per secondAug 19, 2021: 9.52 ft, minor flooding; 2,139 cubic feet per secondAug 23, 2021: 11.78 ft, moderate flooding; 3,241 cubic feet per secondSep 2, 2021: 11.50 ft, moderate flooding; 3,095 cubic feet per second Highest, 13.78 ft, Sep 21, 1938 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Hockanum River at East Hartford 1930s: 1 1940s: 0 1950s: 1 1960s: 0 1970s: 4 1980s: 3 1990s: 1 2000s: 2 2010s: 2 2020s: 5 5 1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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, Hockanum River at East Hartford
1Sep 21, 193813.78+4.78Major5,160
2Oct 15, 200512.03+3.03Moderate—
3Jan 25, 197911.93+2.93Moderate3,400
4Aug 23, 202111.78+2.78Moderate3,241
5Sep 2, 202111.50+2.50Moderate3,095
6Jun 6, 198210.85+1.85Minor2,680
7Jul 9, 202110.74+1.74Minor2,782
8Aug 19, 195510.46+1.46Minor2,740
9Jan 26, 197810.06+1.06Minor2,320
10May 31, 19849.85+0.85Minor2,070
11Apr 20, 19839.66+0.66Minor1,990
12Apr 16, 19969.54+0.54Minor2,030
13Mar 7, 20119.54+0.54Minor2,237
14Aug 19, 20219.52+0.52Minor2,139
15Dec 21, 19739.47+0.47Minor2,180
16Dec 12, 20089.43+0.43Minor—
17Dec 25, 20209.20+0.20Minor2,078
18Feb 4, 19709.13+0.13Minor2,020
19Aug 28, 20119.06+0.06Minor2,016
20Jan 28, 19768.92−0.08Action19,106
21Feb 3, 19738.66−0.34Action18,006
22Mar 22, 19808.60−0.40Action17,406
23Sep 26, 19758.48−0.52Action17,306
24Oct 21, 19898.30−0.70Action14,405
25Mar 5, 19348.29−0.71Action19,206
26Feb 15, 19398.25−0.75Action13,406
27Feb 8, 19418.16−0.84Action16,906
28Aug 19, 19918.13−0.87Action15,206
29Mar 12, 19368.06−0.94Action18,106
30Oct 16, 19557.96−1.04Action15,206
31Apr 5, 19877.72−1.28Action12,706
32Mar 9, 19987.70−1.30Action14,006
33Mar 13, 19627.68−1.32Action14,206
34Jan 15, 19407.53−1.47Action14,106
35Apr 14, 20047.52−1.48Action13,006
36Jan 19, 19997.40−1.60Action12,906
37Jun 17, 20017.31−1.69Action11,806
38Mar 6, 19597.16−1.84Action12,706
39Sep 12, 19607.13−1.87Action12,406
40Mar 23, 19777.09−1.91Action12,406

Other gauges in Hartford County

Flood gauges in Hartford County
Broad Brook7.08.78 ft, Oct 15, 20050
Burlington7.09.33 ft, Oct 15, 20052
Hartford16.037.60 ft, Mar 21, 19367
Thompsonville15.026.60 ft, Mar 20, 19367
Simsbury12.030.10 ft, Aug 20, 19553
Tariffville9.014.00 ft, Sep 22, 19381
Unionville12.018.55 ft, Aug 28, 20110
Hartford8.018.80 ft, Aug 19, 19551
Southington8.510.49 ft, Jan 10, 20240

Hartford County: every hazard · River floods across the country · Connecticut

NOAA National Water Prediction Service, gauge EHDC3, 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.