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
10.74 ft
(Mean Lower Low Water (MLLW)) The level reached on November 25, 1950.
9.23 ft
(MLLW) The level reached on October 25, 1980.
9.2 ft
(MLLW) MAJOR FLOODING. At this level, flooding starts to become severe enough to begin causing structural damage along with widespread flooding of roadways near the bay in Greenwich Township, Fairfield Township and Lawrence Township. 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.
8.2 ft
(MLLW) MODERATE FLOODING. At this level, widespread flooding of roadways begins with many roads becoming impassable in Greenwich Township, Fairfield Township and Lawrence Township. 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.
8 ft
(MLLW) Flooding begins along Canton Road in Stow Creek Township. Flooding begins in Greenwich (including along Bacons Neck Road and Market Lane).
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 |
|---|---|---|
| Nov 24, 1950 | 10.74 ft | — |
| Oct 24, 1980 | 9.23 ft | — |
| Oct 29, 2012 | 9.16 ft | — |
About This Gauge
USGS Site
NWS LID
GRWN4
River
Cohansey River
County
Cumberland, NJ
Coordinates
39.3836°N, 75.3503°W
Get Flood Alerts for Cohansey 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 Cohansey River at Greenwich (IN MLLW)?
The Cohansey River at Greenwich (IN MLLW) gauge is maintained by USGS (site 01413038) 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 Cohansey River at Greenwich (IN MLLW)?
The NWS-defined flood stage for Cohansey River at Greenwich (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 Cohansey River rises?
Download StormCast free on Google Play, go to River Gauges, and add Cohansey River at Greenwich (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 Cohansey River at Greenwich (IN MLLW) gauge located?
The gauge is located in Cumberland County, New Jersey at coordinates 39.3836°N, 75.3503°W. USGS site number: 01413038. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Cohansey River
On This River
Upstream: Cohansey River at Seeley
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.