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Connecticut River at Middle Haddam

Highest listed crest 11.20 ftFlood stage 7.0 ft27 crests since 2011

The Connecticut River at Middle Haddam crested above flood stage 26 times among the 27 crests the National Weather Service lists from 2011 to 2025. The highest, 11.20 ft on December 21, 2023, was moderate flooding, 4.20 feet above flood stage. 5 other gauges on the Connecticut River crested above flood stage within a week of it.

The gauge

Highest listed crest
11.20 ft
December 21, 2023
Flood stage
7.0 ft
Major flooding from 13.0 ft
Crests at major
0
26 above flood stage
Most recent flood crest
May 12, 2025
8.95 ft, minor flooding
Location
Middlesex County
Near Middletown (5.4 mi), Meriden (12.5 mi)

Flood stages

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

Flood categories, Connecticut River at Middle Haddam
Action stage5.01Dec 10, 2011The level at which the NWS or its partners begin to take action
Flood stage (minor)7.025May 12, 2025Minimal or no property damage, but possibly some public threat
Moderate flood stage10.51Dec 21, 2023Some inundation of structures and roads near the stream
Major flood stage13.00—Extensive inundation of structures and roads

Every listed crest

27 crests from 2011 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Connecticut River at Middle Haddam, 2011 to 2025 68101214ft Flood stage 7.0 ftMajor 13.0 ft Mar 14, 2011: 8.33 ft, minor floodingMar 22, 2011: 8.07 ft, minor floodingMay 2, 2011: 8.15 ft, minor floodingMay 20, 2011: 7.21 ft, minor floodingDec 10, 2011: 6.96 ft, action stage; 69,900 cubic feet per secondApr 2, 2014: 7.33 ft, minor floodingApr 17, 2014: 9.39 ft, minor flooding; 101,000 cubic feet per secondApr 17, 2015: 7.70 ft, minor flooding; 83,900 cubic feet per secondFeb 28, 2016: 8.85 ft, minor floodingApr 9, 2017: 7.92 ft, minor flooding; 83,400 cubic feet per secondApr 15, 2017: 7.33 ft, minor floodingNov 1, 2017: 7.51 ft, minor floodingNov 6, 2018: 8.05 ft, minor floodingApr 16, 2020: 7.36 ft, minor floodingDec 28, 2020: 8.48 ft, minor floodingJul 20, 2021: 7.41 ft, minor floodingMay 4, 2023: 7.53 ft, minor flooding; 61,800 cubic feet per secondJul 13, 2023: 10.41 ft, minor flooding; 94,300 cubic feet per secondDec 21, 2023: 11.20 ft, moderate floodingJan 13, 2024: 8.22 ft, minor floodingMar 10, 2024: 9.98 ft, minor floodingMar 14, 2024: 7.44 ft, minor floodingApr 4, 2024: 7.18 ft, minor floodingApr 15, 2024: 9.94 ft, minor floodingMar 20, 2025: 8.36 ft, minor floodingMay 7, 2025: 7.78 ft, minor floodingMay 12, 2025: 8.95 ft, minor flooding Highest, 11.20 ft, Dec 21, 2023 201520202025

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Connecticut River at Middle Haddam 2010s: 12 2020s: 14 14 2010s2020s
  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, Connecticut River at Middle Haddam
1Dec 21, 202311.20+4.20Moderate—
2Jul 13, 202310.41+3.41Minor94,300
3Mar 10, 20249.98+2.98Minor—
4Apr 15, 20249.94+2.94Minor—
5Apr 17, 20149.39+2.39Minor101,000
6May 12, 20258.95+1.95Minor—
7Feb 28, 20168.85+1.85Minor—
8Dec 28, 20208.48+1.48Minor—
9Mar 20, 20258.36+1.36Minor—
10Mar 14, 20118.33+1.33Minor—
11Jan 13, 20248.22+1.22Minor—
12May 2, 20118.15+1.15Minor—
13Mar 22, 20118.07+1.07Minor—
14Nov 6, 20188.05+1.05Minor—
15Apr 9, 20177.92+0.92Minor83,400
16May 7, 20257.78+0.78Minor—
17Apr 17, 20157.70+0.70Minor83,900
18May 4, 20237.53+0.53Minor61,800
19Nov 1, 20177.51+0.51Minor—
20Mar 14, 20247.44+0.44Minor—
21Jul 20, 20217.41+0.41Minor—
22Apr 16, 20207.36+0.36Minor—
23Apr 2, 20147.33+0.33Minor—
24Apr 15, 20177.33+0.33Minor—
25May 20, 20117.21+0.21Minor—
26Apr 4, 20247.18+0.18Minor—
27Dec 10, 20116.96−0.04Action69,900

The worst floods along the Connecticut River

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

December 21, 2023: 11.20 ft here, moderate flooding

July 13, 2023: 10.41 ft here, minor flooding

March 10, 2024: 9.98 ft here, minor flooding

Gauges on the Connecticut River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Connecticut River
DaltonNH18.025.60 ft, Mar 20, 19363
HartfordCT16.037.60 ft, Mar 21, 19367
HolyokeMA26.527.73 ft, Aug 30, 20110
Holyoke - UpperMA9.016.80 ft, Mar 19, 193610
Middle Haddam this gaugeCT7.011.20 ft, Dec 21, 20230
MontagueMA28.049.20 ft, Mar 19, 19362
North StratfordNH13.016.66 ft, Mar 13, 19360
North WalpoleNH28.043.80 ft, Mar 19, 19362
NorthamptonMA112.0129.40 ft, Mar 19, 19363
SpringfieldMA20.028.60 ft, Mar 20, 19362
ThompsonvilleCT15.026.60 ft, Mar 20, 19367
Wells RiverVT12.017.35 ft, Jul 1, 19731
West LebanonNH23.035.00 ft, Nov 4, 19274

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

NOAA National Water Prediction Service, gauge MHDC3, 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.