Major Flood
9.2 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
8.2 ft
Minor Flood
7.2 ft
What Floods at Each Level
9.39 ft
(Mean Lower Low Water (MLLW)) The level reached on October 27, 2018 and on December 23, 2022.
9.2 ft
(MLLW) MAJOR FLOODING. At this level, widespread roadway flooding begins in Middlesex County near the Arthur Kill, the lower Raritan River, the Raritan Bay and the tidal tributaries. Vulnerable homes and businesses may be damaged as water levels rise further above this threshold. Numerous roads become impassable and some neighborhoods may be isolated. The water becomes a danger to anyone who attempts to cross on foot or in a vehicle.
8.2 ft
(MLLW) MODERATE FLOODING. At this level, additional roadways in Middlesex County near the Arthur Kill, the lower Raritan River, the Raritan Bay and the tidal tributaries begin to flood. 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.
7.8 ft
(MLLW) Flooding begins along Woodbridge Creek in Woodbridge Township and Perth Amboy, especially around State Street. Flooding begins in Perth Amboy. Flooding begins along the South River in East Brunswick Township, South River and Sayreville. Flooding begins around Victory Plaza in Sayreville (US Route 9 and NJ Route 35). Flooding begins along North Rosewell Avenue in South Amboy. Flooding begins along NJ Route 35 in Laurence Harbor.
7.5 ft
(MLLW) COASTAL FLOOD ADVISORY LEVEL.
7.2 ft
(MLLW) MINOR FLOODING.
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 |
|---|---|---|
| Dec 22, 2022 | 9.39 ft | — |
| Oct 26, 2018 | 9.39 ft | — |
| Jan 12, 2024 | 8.83 ft | — |
About This Gauge
Get Flood Alerts for Arthur Kill
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 Arthur Kill at Perth Amboy (IN MLLW)?
The Arthur Kill at Perth Amboy (IN MLLW) gauge is maintained by USGS (site 01396060) 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 Arthur Kill at Perth Amboy (IN MLLW)?
The NWS-defined flood stage for Arthur Kill at Perth Amboy (IN MLLW) is 7.2 feet. Action stage begins at N/A feet. Moderate flooding starts at 8.2 feet, and major flooding at 9.2 feet.
How do I get alerts when Arthur Kill rises?
Download StormCast free on Google Play, go to River Gauges, and add Arthur Kill at Perth Amboy (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 Arthur Kill at Perth Amboy (IN MLLW) gauge located?
The gauge is located in Middlesex County, New Jersey at coordinates 40.5039°N, 74.2622°W. USGS site number: 01396060. 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
- <head> <meta charset="utf-8"> <style type="text/css"> .style1 {background-color: #FFFF00;} </style> </head> Please refer to our <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. 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. During tropical cyclones, please refer <span class="style1"> <a href="https://forecast.weather.gov/product.php?site=NWS&issuedby=PHI&product=TCV&format=CI&version=1&glossary=1">here</a></span> for additional storm surge information.
- <style type="text/css">.style1 { background-color: #FFFF00;}</style> During a Tropical Storm or Hurricane Watch or Warning, inundation mapping provided by the <a href="http://www.nhc.noaa.gov/"><span class="style1">National Hurricane Center</span> </a>reflects a reasonable worst case scenario. The experimental forecast above is the total water forecast that is expected to occur.