Pomperaug River above Southbury, CT
River level and flood forecast · New Haven County
The river is 7.1 ft below flood stage (9 ft).
Flow: 2 cubic feet per second (USGS).
The lowest for October 13 in 94 years of records.
Usual for October 13: 16 to 81 cubic feet per second (the middle half of 94 years).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts Pomperaug River above Southbury to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 12 ft |
| Moderate flood stage | 10 ft |
| Flood stage | 9 ft |
| Action stage | 8.5 ft |
| Record crest (August 19, 1955) | 21.8 ft |
What floods at each level
From the National Weather Service, highest first.
- 12 ftMultiple 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 ftMultiple 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 ftFlooding will begin along River Trail and Route 172 causing street closures.
- 9 ftRiver over its bank will begin flooding properties yards along River Trail and Old Field Road.
Highest crests on record
- 21.8 ft — August 19, 1955
- 17.66 ft — March 7, 2011
- 15.92 ft — April 4, 1987
- 14.18 ft — June 5, 1982
- 13.85 ft — April 16, 2007
Recent crests: 17.66 ft (March 7, 2011) · 13.85 ft (April 16, 2007) · 12.82 ft (April 23, 2006) · 11.63 ft (January 27, 1996) · 10.94 ft (August 22, 1994)
Highest flow on record
29,400 cubic feet per second — August 19, 1955. From the USGS's yearly peaks since 1932.
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (SBYC3); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.