Delaware Bay at Cape May (IN MLLW)
New Jersey — Water Level & Flood Stage
Located in Cape May County, New Jersey on the Delaware Bay. Live water level data from USGS, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: CMAN4). Live data may be limited. View on NWS AHPS →
Flood Stages
Major Flood
8.7 ft
Moderate Flood
7.7 ft
Minor Flood
6.7 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
8.98 ft
(Mean Lower Low Water (MLLW)) The level reached on January 23, 2016.
8.89 ft
(MLLW) The level reached on October 29, 2012 during Post Tropical Cyclone Sandy.
8.81 ft
(MLLW) The level reached on September 27, 1985 during Hurricane Gloria.
8.7 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 Cape May, West Cape May and Cape May Point, as well as in bay shore areas of Lower Township and Middle Township. Vulnerable homes and businesses may be severely damaged or destroyed as water levels rise further above this threshold. Numerous roads become impassable and some neighborhoods may be isolated.
7.7 ft
(MLLW) MODERATE FLOODING. At this level, widespread flooding of roadways begins due to high water and/or wave action with many roads becoming impassable in Cape May, West Cape May and Cape May Point, as well as in bay shore areas of Lower Township and Middle 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.
7.5 ft
(MLLW) Flooding begins on the access roads to the Ocean Drive bridge between Wildwood Crest and Cape May (Cape May County Route 621). Flooding begins along Beach Avenue, New Jersey Avenue and Wilmington Avenue in Cape May. Flooding begins around the Elmira Street bridge in Cape May. Flooding begins near Myrtle Avenue in West Cape May.
7.3 ft
(MLLW) Flooding begins along Schellengers Landing Road and along Wilson Drive in Lower Township around NJ Route 109. Flooding begins along Washington Street, Yacht Avenue and Texas Avenue in Cape May.
7 ft
(MLLW) COASTAL FLOOD ADVISORY LEVEL.
6.9 ft
(MLLW) Flooding begins along the Delaware Bay shoreline from Reeds Beach to North Cape May.
6.7 ft
(MLLW) MINOR FLOODING.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jan 22, 2016 | 8.98 ft | — |
| Jan 22, 2016 | 8.98 ft | — |
| Oct 29, 2012 | 8.89 ft | -9,999 cfs |
| Oct 29, 2012 | 8.89 ft | -9,999 cfs |
| Sep 26, 1985 | 8.81 ft | -9,999 cfs |
About This Gauge
NWS LID
CMAN4
River
Delaware Bay
County
Cape May, NJ
Coordinates
38.9683°N, 74.9600°W
Get Flood Alerts for Delaware 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 Delaware Bay at Cape May (IN MLLW)?
The Delaware Bay at Cape May (IN MLLW) gauge is maintained by USGS 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 Delaware Bay at Cape May (IN MLLW)?
The NWS-defined flood stage for Delaware Bay at Cape May (IN MLLW) is 6.7 feet. Action stage begins at N/A feet. Moderate flooding starts at 7.7 feet, and major flooding at 8.7 feet.
How do I get alerts when Delaware Bay rises?
Download StormCast free on Google Play, go to River Gauges, and add Delaware Bay at Cape May (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 — even when your screen is off.
Where is the Delaware Bay at Cape May (IN MLLW) gauge located?
The gauge is located in Cape May County, New Jersey at coordinates 38.9683°N, 74.9600°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Resources
Source & Notes
Data provided by: NOAA National Ocean Service
- <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.