Major Flood
12 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
10 ft
Minor Flood
8 ft
Action Stage
7 ft
What Floods at Each Level
13.5 ft
Bridge is completely submerged under water.
10 ft
Houses downstream begin to take on water.
8 ft
Right bank and approach to bridge is flooded.
5 ft
Minor low land flooding downstream of gauge.
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 |
|---|---|---|
| Aug 18, 1955 | 15.22 ft | 18,000 cfs |
| Sep 1, 2021 | 15.16 ft | 17,857 cfs |
| Sep 15, 1999 | 13.9 ft | 14,800 cfs |
About This Gauge
USGS Site
NWS LID
STTN4
River
South Branch Raritan River
County
Hunterdon, NJ
Coordinates
40.5722°N, 74.8681°W
Get Flood Alerts for South Branch Raritan 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 South Branch Raritan River at Stanton?
The South Branch Raritan River at Stanton gauge is maintained by USGS (site 01397000) 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 South Branch Raritan River at Stanton?
The NWS-defined flood stage for South Branch Raritan River at Stanton is 8 feet. Action stage begins at 7 feet. Moderate flooding starts at 10 feet, and major flooding at 12 feet.
How do I get alerts when South Branch Raritan River rises?
Download StormCast free on Google Play, go to River Gauges, and add South Branch Raritan River at Stanton 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 South Branch Raritan River at Stanton gauge located?
The gauge is located in Hunterdon County, New Jersey at coordinates 40.5722°N, 74.8681°W. USGS site number: 01397000. 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
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