Pemigewasset River at Woodstock, NH
River level and flood forecast · Grafton County
The river is 6.8 ft below flood stage (9 ft).
Forecast to rise to 4.1 ft Wed 2 AM, below the 9 ft flood stage.
Flow: 91 cubic feet per second (USGS).
Lower than normal for October 13.
Usual for October 13: 127 to 416 cubic feet per second (the middle half of 63 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.
Get flood alerts for this river
An email when the National Weather Service forecasts Pemigewasset River at Woodstock to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 16 ft |
| Moderate flood stage | 13 ft |
| Flood stage | 9 ft |
| Action stage | 6 ft |
| Record crest (August 28, 2011) | 16.97 ft |
What floods at each level
From the National Weather Service, highest first.
- 16.5 ftSignificant flooding occurs along Route 112. Significant flooding also occurs along Route 3 and Route 175 from North Woodstock to West Campton. Some flooding occurs at the Riverfront condo development, the River Green Hotel and the Saint Andrews condos. Water rises up to the low steel on the Route 175 bridge in North Woodstock.
- 13 ftRoute 175 floods to a depth of 2 to 4 feet from Cox Farm Road to Meadow Lane in Woodstock. Low lying areas along US route 3 also flood.
- 11 ftRoute 175 floods to a depth of 1 foot at Cox Farm Road in Woodstock. Campgrounds along the river also flood.
- 9 ftMinor lowland flooding of area campgrounds begins. Water encroaches on Route 175 in North Woodstock.
Highest crests on record
- 16.97 ft — August 28, 2011
- 16.13 ft — October 24, 1959
- 14.56 ft — December 18, 2023
- 14.09 ft — October 22, 1995
- 14.01 ft — April 1, 1987
Recent crests: 10.12 ft (March 17, 2026) · 10.53 ft (April 13, 2024) · 14.56 ft (December 18, 2023) · 10.01 ft (May 1, 2023) · 9.99 ft (December 24, 2022)
Highest flow on record
53,700 cubic feet per second — August 28, 2011. From the USGS's yearly peaks since 1940.
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (WOON3); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.