Major Flood
12 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
10 ft
Minor Flood
9 ft
Action Stage
8.5 ft
What Floods at Each Level
12 ft
Multiple roads flooded causing multiple road closures, such as Old Waterbury road at Church road, West Flat Hill road at Purchase Brook road, Stillson road, Main street at Main street north intersection. Route 6 at Woodbury line, State route 172 between Horse Fence Hill and Southbury Training School and Old Field road at Bullet Hill Brook.
11 ft
Multiple roads will begin to flood causing closures, such as Old Waterbury road at Church road, West Flat Hill road at Purchase Brook road, Stillson road, Main street at Main street north intersection. Route 6 at Woodbury line.
10 ft
Flooding will begin along River Trail and Route 172 causing street closures.
9 ft
River over its bank will begin flooding properties yards along River Trail and Old Field Road.
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 |
|---|---|---|
| Aug 18, 1955 | 21.8 ft | 29,400 cfs |
| Mar 7, 2011 | 17.66 ft | 12,500 cfs |
| Apr 3, 1987 | 15.92 ft | 9,780 cfs |
About This Gauge
USGS Site
NWS LID
SBYC3
River
Pomperaug River
County
New Haven, CT
Coordinates
41.4806°N, 73.2250°W
Get Flood Alerts for Pomperaug 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 Pomperaug River above Southbury?
The Pomperaug River above Southbury gauge is maintained by USGS (site 01204000) 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 Pomperaug River above Southbury?
The NWS-defined flood stage for Pomperaug River above Southbury is 9 feet. Action stage begins at 8.5 feet. Moderate flooding starts at 10 feet, and major flooding at 12 feet.
How do I get alerts when Pomperaug River rises?
Download StormCast free on Google Play, go to River Gauges, and add Pomperaug River above Southbury to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Pomperaug River above Southbury gauge located?
The gauge is located in New Haven County, Connecticut at coordinates 41.4806°N, 73.2250°W. USGS site number: 01204000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey