Major Flood
20 ft
Current Water Level
Gage Height
Loading...
Streamflow
Loading...
Last Reading
Loading...
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
16 ft
Minor Flood
12 ft
Action Stage
10 ft
What Floods at Each Level
15 ft
In Hillsborough, Henniker Street floods with 3 feet of water and Bear Hill road is impassible.
14 ft
In Hillsborough, Henniker Street floods with 2 feet of water and the High Tide restaurant is inaccessible. In Henniker, Western Avenue floods.
13 ft
In Hillsborough, Bear Hill road floods as well as Henniker Street from High Tide restaurant to Old Henniker Road.
12 ft
In the town of Hillsborough, Hennicker Street and Bear Hill Road flood. In Henniker, flood waters encroach on parts of Western Avenue.
10 ft
Lowland flooding begins.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
Loading chart data...
Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Sep 20, 1938 | 21.3 ft | 22,200 cfs |
| Apr 17, 2007 | 14.54 ft | 13,100 cfs |
| Oct 16, 2005 | 13.75 ft | 11,100 cfs |
About This Gauge
USGS Site
NWS LID
HENN3
River
Contoocook River
County
Merrimack, NH
Coordinates
43.1520°N, 71.8573°W
Get Flood Alerts for Contoocook 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 Contoocook River at Henniker?
The Contoocook River at Henniker gauge is maintained by USGS (site 01085000) 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 Contoocook River at Henniker?
The NWS-defined flood stage for Contoocook River at Henniker is 12 feet. Action stage begins at 10 feet. Moderate flooding starts at 16 feet, and major flooding at 20 feet.
How do I get alerts when Contoocook River rises?
Download StormCast free on Google Play, go to River Gauges, and add Contoocook River at Henniker 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 Contoocook River at Henniker gauge located?
The gauge is located in Merrimack County, New Hampshire at coordinates 43.1520°N, 71.8573°W. USGS site number: 01085000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Contoocook River
On This River
Upstream: Contoocook River at Peterborough
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey