Minor Flood
14 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.
Action Stage
14 ft
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Aug 1, 1973 | 24.5 ft | 10,500 cfs |
| Jul 13, 1975 | 20.4 ft | 4,420 cfs |
| Sep 15, 1999 | 17.16 ft | 5,380 cfs |
About This Gauge
Get Flood Alerts for Stony Brook
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 Stony Brook at Watchung?
The Stony Brook at Watchung gauge is maintained by USGS (site 01403540) 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 Stony Brook at Watchung?
The NWS-defined flood stage for Stony Brook at Watchung is 14 feet. Action stage begins at 14 feet. Moderate flooding starts at N/A feet, and major flooding at N/A feet.
How do I get alerts when Stony Brook rises?
Download StormCast free on Google Play, go to River Gauges, and add Stony Brook at Watchung 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 Stony Brook at Watchung gauge located?
The gauge is located in Somerset County, New Jersey at coordinates 40.6367°N, 74.4514°W. USGS site number: 01403540. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Stony Brook
On This River
Upstream: Stony Brook at Princeton
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey