Major Flood
17 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
15 ft
Minor Flood
11 ft
Action Stage
10 ft
What Floods at Each Level
20 ft
In Manchester, significant flooding occurs on Riverdale Avenue and Stark Way.
17 ft
In Manchester, Stark Way and Riverdale Avenue flood.
15 ft
Low lying areas of Goffstown...Manchester...Merrimack and Litchfield flood.
11 ft
Low lying flooding begins.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Mar 19, 1936 | 35.19 ft | 150,000 cfs |
| Sep 22, 1938 | 25.87 ft | 102,500 cfs |
| May 15, 2006 | 19.87 ft | 74,766 cfs |
About This Gauge
USGS Site
NWS LID
GOFN3
River
Merrimack River
County
Hillsborough, NH
Coordinates
42.9481°N, 71.4634°W
Get Flood Alerts for Merrimack 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 Merrimack River at Goffs Falls?
The Merrimack River at Goffs Falls gauge is maintained by USGS (site 01092000) 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 Merrimack River at Goffs Falls?
The NWS-defined flood stage for Merrimack River at Goffs Falls is 11 feet. Action stage begins at 10 feet. Moderate flooding starts at 15 feet, and major flooding at 17 feet.
How do I get alerts when Merrimack River rises?
Download StormCast free on Google Play, go to River Gauges, and add Merrimack River at Goffs Falls 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 Merrimack River at Goffs Falls gauge located?
The gauge is located in Hillsborough County, New Hampshire at coordinates 42.9481°N, 71.4634°W. USGS site number: 01092000. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey