Smith River (NH) at Bristol
New Hampshire — Water Level & Flood Stage
Located in Merrimack County, New Hampshire on the Smith River (NH). Live water level data from USGS gauge 01078000, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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Flood Stages
Major Flood
14 ft
6,470 cfs
Moderate Flood
12 ft
5,000 cfs
Minor Flood
8 ft
2,380 cfs
Action Stage
6 ft
1,280 cfs
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
16 ft
Smith River Road floods in several locations from Bristol to Danbury.
14 ft
Flooding begins on Smith River Road.
12 ft
Prime farmland flooded from Bristol to Danbury.
8 ft
Minor lowland 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 18, 1936 | 16.09 ft | 8,100 cfs |
| Mar 18, 1936 | 16.09 ft | 8,100 cfs |
| May 14, 2006 | 11.41 ft | 4,590 cfs |
| May 14, 2006 | 11.41 ft | 4,590 cfs |
| Sep 21, 1938 | 10.77 ft | 5,070 cfs |
About This Gauge
USGS Site
NWS LID
BRSN3
River
Smith River (NH)
County
Merrimack, NH
Coordinates
43.5665°N, 71.7479°W
Get Flood Alerts for Smith River (NH)
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 Smith River (NH) at Bristol?
The Smith River (NH) at Bristol gauge is maintained by USGS (site 01078000) 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 Smith River (NH) at Bristol?
The NWS-defined flood stage for Smith River (NH) at Bristol is 8 feet. Action stage begins at 6 feet. Moderate flooding starts at 12 feet, and major flooding at 14 feet.
How do I get alerts when Smith River (NH) rises?
Download StormCast free on Google Play, go to River Gauges, and add Smith River (NH) at Bristol to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Smith River (NH) at Bristol gauge located?
The gauge is located in Merrimack County, New Hampshire at coordinates 43.5665°N, 71.7479°W. USGS site number: 01078000. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey