North Branch Raritan River near Far Hills
New Jersey — Water Level & Flood Stage
Located in Somerset County, New Jersey on the North Branch Raritan River. Live water level data from USGS gauge 01398500, 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
8 ft
8,000 cfs
Moderate Flood
7 ft
5,790 cfs
Minor Flood
6 ft
3,900 cfs
Action Stage
5 ft
2,410 cfs
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jul 22, 1919 | 7.6 ft | -9,999 cfs |
| Jul 22, 1919 | 7.6 ft | -9,999 cfs |
| Aug 27, 1971 | 7.28 ft | 6,390 cfs |
| Aug 27, 1971 | 7.28 ft | 6,390 cfs |
| Aug 28, 2011 | 6.84 ft | — |
About This Gauge
USGS Site
NWS LID
FARN4
River
North Branch Raritan River
County
Somerset, NJ
Coordinates
40.7083°N, 74.6361°W
Get Flood Alerts for North 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 North Branch Raritan River near Far Hills?
The North Branch Raritan River near Far Hills gauge is maintained by USGS (site 01398500) 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 North Branch Raritan River near Far Hills?
The NWS-defined flood stage for North Branch Raritan River near Far Hills is 6 feet. Action stage begins at 5 feet. Moderate flooding starts at 7 feet, and major flooding at 8 feet.
How do I get alerts when North Branch Raritan River rises?
Download StormCast free on Google Play, go to River Gauges, and add North Branch Raritan River near Far Hills 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 North Branch Raritan River near Far Hills gauge located?
The gauge is located in Somerset County, New Jersey at coordinates 40.7083°N, 74.6361°W. USGS site number: 01398500. 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