Sugar River (NH) at West Claremont, NH
River level and flood forecast · Sullivan County
The river is 5.8 ft below flood stage (7 ft).
Forecast to rise to 2.0 ft Wed 8 AM, below the 7 ft flood stage.
Flow: 73 cubic feet per second (USGS).
Lower than normal for October 13.
Usual for October 13: 74 to 192 cubic feet per second (the middle half of 98 years).
The last 7 days and the forecast
NWS forecast issued Mon, Oct 12, 11:14 AM. Forecasts change as rain falls and as upstream water arrives.
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An email when the National Weather Service forecasts Sugar River (NH) at West Claremont to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 11 ft |
| Moderate flood stage | 9 ft |
| Flood stage | 7 ft |
| Action stage | 5 ft |
| Record crest (March 12, 1936) | 11.8 ft |
What floods at each level
From the National Weather Service, highest first.
- 12 ftMaria, Potvin, Mechanic, and Willard Streets are flooded in West Claremont.
- 10 ftTwistback Road and Beauregard Street are flooded in West Claremont.
- 7 ftMinor lowland flooding begins.
Highest crests on record
- 11.8 ft — March 12, 1936
- 11.43 ft — February 16, 1984
- 10.99 ft — March 27, 1992
- 10.92 ft — March 19, 1936
- 10.49 ft — September 21, 1938
Recent crests: 8.48 ft (July 11, 2023) · 8.12 ft (April 17, 2007) · 8.95 ft (October 9, 2005) · 7.31 ft (April 3, 2005) · 7.12 ft (September 17, 1999)
Highest flow on record
14,000 cubic feet per second — March 19, 1936. From the USGS's yearly peaks since 1929.
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (WCLN3); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.