North Branch Raritan River near Raritan NJ

Somerset County, New Jersey · USGS gauge 01400000 · NWS RRTN4 · North Branch Raritan River flood status · New Jersey river levels

Nearby: river levels near Pottersville · river levels near Manville

Is North Branch Raritan River near Raritan NJ flooding right now?

North Branch Raritan River near Raritan NJ measured 2.72 ft on 2026-09-11 01:00:00 UTC. That observation was 7.3 ft below its 10 ft flood stage. This is the latest available reading, not a guarantee of current conditions.

Gauge height

2.72 ft

as of 72 min ago

Streamflow

103 cfs

data refreshed 10 min ago

Minor flooding here begins at 10 ft, with major flooding at 15 ft. The highest crest on record was 19.52 ft on Thu, Sep 2, 2021.

Flood forecast

NWS forecast, issued 12 hours ago. Forecasts are issued for select river points and update through the day.

Flood stages at this gauge

Category	Stage	Current distance
Action	8 ft	5.3 ft below
Minor flood	10 ft	7.3 ft below
Moderate flood	12 ft	9.3 ft below
Major flood	15 ft	12.3 ft below

New to these numbers? What does flood stage mean? · How to read a river gauge · Why is the river rising?

Highest crests on record

Stage	Date
19.52 ft	2021-09-02
18.98 ft	1999-09-16
17.97 ft	2011-08-28
15.47 ft	1971-08-28
15.44 ft	1996-10-19

Nearby gauges

Gauge	Distance	County
North Branch Raritan River at South Branch NJ	1.1 mi	Somerset County
South Branch Raritan River at South Branch NJ	1.9 mi	Somerset County
North Branch Raritan River at North Branch NJ	2.1 mi	Somerset County
Holland Brook at Readington NJ	2.8 mi	Somerset County
Peters Brook near Raritan NJ	3.0 mi	Somerset County

Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.

Sources: USGS monitoring location · NWS gauge & forecast