Connecticut River at Thompsonville
Connecticut — Water Level & Flood Stage
Located in Hartford County, Connecticut on the Connecticut River. Live water level data from USGS gauge 01184000, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
19 ft
Moderate Flood
17 ft
Minor Flood
15 ft
Action Stage
14 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
18 ft
Significant and widespread flooding along the river can be expected from the Massachusetts towns of Agawam and Longmeadow, through the northern Connecticut towns of Suffield and Enfield.
17 ft
Flooding will become more widespread along the Connecticut River from the Massachusetts towns of Agawam and Longmeadow, through the northern Connecticut towns of Suffield and Enfield.
16 ft
Flooding impacts low lying areas along the Connecticut River from the Massachusetts towns of Agawam and Longmeadow, through the northern Connecticut towns of Suffield and Enfield.
15 ft
Lowland flooding will begin along the Connecticut River near Thompsonville.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Mar 19, 1936 | 26.6 ft | 828,000 cfs |
| Mar 19, 1936 | 26.6 ft | 828,000 cfs |
| Jul 22, 1938 | 24.4 ft | 236,000 cfs |
| Jul 22, 1938 | 24.4 ft | 236,000 cfs |
| Aug 18, 1955 | 20.93 ft | 174,000 cfs |
About This Gauge
USGS Site
NWS LID
TMVC3
River
Connecticut River
County
Hartford, CT
Coordinates
41.9873°N, 72.6058°W
Get Flood Alerts for Connecticut River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Connecticut River at Thompsonville?
The Connecticut River at Thompsonville gauge is maintained by USGS (site 01184000) and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Connecticut River at Thompsonville?
The NWS-defined flood stage for Connecticut River at Thompsonville is 15 feet. Action stage begins at 14 feet. Moderate flooding starts at 17 feet, and major flooding at 19 feet.
How do I get alerts when Connecticut River rises?
Download StormCast free on Google Play, go to River Gauges, and add Connecticut River at Thompsonville to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Connecticut River at Thompsonville gauge located?
The gauge is located in Hartford County, Connecticut at coordinates 41.9873°N, 72.6058°W. USGS site number: 01184000. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- Stage may be affected by ice.