Major Flood
3.7 ft
Current Water Level
Gage Height
Loading...
Streamflow
Loading...
Last Reading
Loading...
FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
2.7 ft
Minor Flood
1.7 ft
What Floods at Each Level
7.21 ft
(Mean Lower Low Water (MLLW)) The level reached on October 30, 2012 during Post Tropical Cyclone Sandy.
4.31 ft
(MLLW) The level reached during the northeaster on December 11, 1992.
3.73 ft
(MLLW) The level reached on December 23, 2022.
3.7 ft
(MLLW) MAJOR FLOODING. At this level, flooding starts to become severe enough to begin causing structural damage along with widespread flooding of roadways in Brick Township, Point Pleasant, Bay Head, Mantoloking and nearby communities. Vulnerable homes and businesses may be severely damaged as water levels rise further above this threshold. Numerous roads become impassable and some neighborhoods may be isolated. The flood waters become a danger to anyone who attempts to cross on foot or in a vehicle.
2.7 ft
(MLLW) MODERATE FLOODING. At this level, widespread flooding of roadways begins with many roads becoming impassable in Brick Township, Point Pleasant, Bay Head, Mantoloking and nearby communities. Lives may be at risk when people put themselves in harm's way. Some damage to vulnerable structures may begin to occur. COASTAL FLOOD WARNING LEVEL.
2.3 ft
(MLLW) Flooding begins along Club Drive, Bridge Avenue, Lake Avenue and Osborne Avenue in Bay Head.
2.1 ft
(MLLW) Flooding begins in Brick Township.
2 ft
(MLLW) COASTAL FLOOD ADVISORY LEVEL.
1.9 ft
(MLLW) Bayside flooding begins in Point Pleasant, Bay Head, Mantoloking and nearby communities.
1.7 ft
(MLLW) MINOR FLOODING.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
Loading chart data...
Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Oct 29, 2012 | 7.21 ft | — |
| Dec 10, 1992 | 4.31 ft | — |
| Jan 9, 2024 | 3.82 ft | — |
About This Gauge
Get Flood Alerts for Barnegat Bay
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 Barnegat Bay at Mantoloking (IN MLLW)?
The Barnegat Bay at Mantoloking (IN MLLW) gauge is maintained by USGS (site 01408168) 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 Barnegat Bay at Mantoloking (IN MLLW)?
The NWS-defined flood stage for Barnegat Bay at Mantoloking (IN MLLW) is 1.7 feet. Action stage begins at N/A feet. Moderate flooding starts at 2.7 feet, and major flooding at 3.7 feet.
How do I get alerts when Barnegat Bay rises?
Download StormCast free on Google Play, go to River Gauges, and add Barnegat Bay at Mantoloking (IN MLLW) 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 Barnegat Bay at Mantoloking (IN MLLW) gauge located?
The gauge is located in Ocean County, New Jersey at coordinates 40.0406°N, 74.0544°W. USGS site number: 01408168. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Barnegat Bay
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- <style type="text/css"> .style1 {background-color: #FFFF00;}</style>Please refer to our <style type="text/css"> .style1 { background-color: #FFFF00;} .style2 {background-color: #FFFF00;} </style> <a href="http://forecast.weather.gov/product.php?site=NWS&issuedby=PHI&product=CFW&format=CI&version=1&glossary=0"> <span class="style1">Coastal Hazard Message</span></a> for specific information regarding Coastal Flood Watches, Warnings and Advisories. During tropical cyclones, please refer<a href="https://forecast.weather.gov/product.php?site=NWS&issuedby=PHI&product=TCV&format=CI&version=1&glossary=1"> <span class="style2">here</span></a> for additional storm surge information.
- Flood impacts are based on long-term averages. Actual impacts from any tidal flooding event may vary due to factors such as rainfall, wave action, and the number of tide cycles during which there is an onshore flow.