Big Brook at Marlboro
New Jersey — Water Level & Flood Stage
Located in Monmouth County, New Jersey on the Big Brook. Live water level data from USGS gauge 01407290, 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
Action Stage
17 ft
980 cfs
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
17 ft
Water overtops banks and floods adjacent floodplain.
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 19, 1989 | 20.16 ft | -9,999 cfs |
| Sep 19, 1989 | 20.16 ft | -9,999 cfs |
| Aug 27, 2011 | 19.7 ft | — |
| Aug 27, 2011 | 19.7 ft | — |
| Aug 5, 1990 | 19.24 ft | — |
About This Gauge
Get Flood Alerts for Big 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 Big Brook at Marlboro?
The Big Brook at Marlboro gauge is maintained by USGS (site 01407290) 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 Big Brook at Marlboro?
This gauge has NWS-defined flood categories. Check the flood stages section above for current thresholds.
How do I get alerts when Big Brook rises?
Download StormCast free on Google Play, go to River Gauges, and add Big Brook at Marlboro 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 Big Brook at Marlboro gauge located?
The gauge is located in Monmouth County, New Jersey at coordinates 40.3197°N, 74.2142°W. USGS site number: 01407290. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey