Warner River at Davisville, NH
River level and flood forecast · Merrimack County
The river is 4.6 ft below flood stage (8 ft).
Forecast to rise to 3.8 ft Wed 2 PM, below the 8 ft flood stage.
Flow: 32 cubic feet per second (USGS).
Normal for October 13.
Usual for October 13: 19 to 82 cubic feet per second (the middle half of 64 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 Warner River at Davisville to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 12 ft |
| Moderate flood stage | 10 ft |
| Flood stage | 8 ft |
| Action stage | 6 ft |
| Record crest (September 22, 1938) | 12.8 ft |
What floods at each level
From the National Weather Service, highest first.
- 13 ftIn Warner, Depot Street floods with water surrounding businesses. Chemical Lane flooded near the confluence with the Silver Brook, cutting off access to a dozen properties including those on Willey Lane. Wallaby Colby Lane flooded. In Hopkinton, homes along Deer Path, Well House, and Dustin Roads are at risk from high water especially if the Contoocook River is also at high flows.
- 12 ftIn Warner, areas that flood are West Roby District Road, West Joppa Road covered bridge, Waterloo Road covered bridge, Morse Lane, and the Tom Pond area experience flooding. Properties south of Depot Street are inundated with impacts to parking areas. Significant flooding to Riverside Park.
- 10 ftLow lying roads along the Warner River begin to have a flood threat. The most flood prone areas include West Joppa Road in Warner, cutting off access to the Dalton covered bridge.
- 9.5 ftBasement flooding of properties along Tom's Pond in Warner begins.
- 8.5 ftProperties along Tom's Pond including Pine Lane in Warner are flooded with water overtopping retention walls.
- 8 ftRiverside Road floods along with increasing depths over recreational fields in Warner.
- 6.5 ftAlthough no structures are affected, water inundates recreational areas in Warner and Davisville. The river is at bankfull in other reaches, some erosion may occur.
Highest crests on record
- 12.8 ft — September 22, 1938
- 12.35 ft — May 15, 2006
- 11.87 ft — April 16, 2007
- 10.14 ft — October 9, 2005
- 9.88 ft — March 27, 1953
Recent crests: 8.58 ft (May 10, 2025) · 8.45 ft (December 19, 2023) · 8.38 ft (July 17, 2023) · 8.62 ft (December 24, 2022) · 8.63 ft (July 30, 2021)
Highest flow on record
8,640 cubic feet per second — May 15, 2006. 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 (DAVN3); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.