North Branch Raritan River at South Branch NJ
Is North Branch Raritan River at South Branch NJ flooding right now?
No — North Branch Raritan River at South Branch NJ is at 1.60 ft, 6.4 ft below its 8 ft flood stage, as of 2 hours ago.
Gauge height
1.60 ft
Streamflow
—
Minor flooding here begins at 8 ft, with major flooding at 11 ft. The highest crest on record was 20.26 ft on Thu, Sep 2, 2021.
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 7 ft | 5.4 ft below |
| Minor flood | 8 ft | 6.4 ft below |
| Moderate flood | 9 ft | 7.4 ft below |
| Major flood | 11 ft | 9.4 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 20.26 ft | 2021-09-02 |
| 18.98 ft | 1999-09-16 |
| 18 ft | 1896-02-06 |
| 17.69 ft | 2011-08-28 |
| 16.45 ft | 1955-08-19 |
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| South Branch Raritan River at South Branch NJ | 0.8 mi | Somerset County |
| North Branch Raritan River near Raritan NJ | 1.1 mi | Somerset County |
| Holland Brook at Readington NJ | 2.2 mi | Somerset County |
| North Branch Raritan River at North Branch NJ | 3.1 mi | Somerset County |
| Peters Brook near Raritan NJ | 3.9 mi | Somerset County |
Get a flood alert for this gauge
Free email alerts when this gauge approaches flood stage are coming soon. Leave your email and you'll be first in line.
One email when alerts launch, then only flood notifications. No spam, unsubscribe anytime.
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.