Major Flood
33 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
30 ft
Minor Flood
28 ft
Action Stage
26 ft
What Floods at Each Level
33 ft
A large portion of Bound Brook is protected by the flood reduction project. Pump station operations become critical, at this stage, for the continued protection of the borough.
30 ft
Main Street is protected by flap valves/sluice gates. This level triggers the gate closures to protect Main Street.
28 ft
Backyard and low areas are protected by levees and the flood wall. Without the levees or if there is a breach in the levees, minor flooding will occur.
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 |
|---|---|---|
| Sep 2, 2021 | 42.13 ft | 75,471 cfs |
| Sep 17, 1999 | 42.13 ft | 82,900 cfs |
| Aug 28, 2011 | 41.9 ft | 80,700 cfs |
Flood Inundation Map
NOAA has mapped what areas flood at different water levels for this gauge. View the interactive flood inundation map →
About This Gauge
USGS Site
NWS LID
BDKN4
River
Raritan River
County
Somerset, NJ
Coordinates
40.5511°N, 74.5483°W
Get Flood Alerts for 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 Raritan River at Bound Brook?
The Raritan River at Bound Brook gauge is maintained by USGS (site 01403060) 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 Raritan River at Bound Brook?
The NWS-defined flood stage for Raritan River at Bound Brook is 28 feet. Action stage begins at 26 feet. Moderate flooding starts at 30 feet, and major flooding at 33 feet.
How do I get alerts when Raritan River rises?
Download StormCast free on Google Play, go to River Gauges, and add Raritan River at Bound Brook 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 Raritan River at Bound Brook gauge located?
The gauge is located in Somerset County, New Jersey at coordinates 40.5511°N, 74.5483°W. USGS site number: 01403060. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Raritan River
On This River
Upstream: Raritan River at Manville
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey