Sluice Creek at S. Dennis (IN MLLW)
New Jersey — Water Level & Flood Stage
Located in Cape May County, New Jersey on the Sluice Creek. Live water level data from USGS gauge 01411435, 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
Major Flood
9.1 ft
Moderate Flood
8.1 ft
Minor Flood
7.1 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
10.08 ft
(Mean Lower Low Water (MLLW)) The level reached on September 27, 1985 during Hurricane Gloria.
9.49 ft
(MLLW) The level reached on October 30, 2012 during Post Tropical Cyclone Sandy.
9.1 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 Dennis Township and Middle 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.
8.1 ft
(MLLW) MODERATE FLOODING. At this level, widespread flooding of roadways begins with many roads becoming impassable near the bay in Dennis Township and Middle Township. Lives may be at risk when people put themselves in harm's way. Some damage to vulnerable structures may being to occur. COASTAL FLOOD WARNING LEVEL.
7.4 ft
(MLLW) COASTAL FLOOD ADVISORY LEVEL.
7.3 ft
(MLLW) Flooding occurs along the Delaware Bay shoreline in Dennis Township and Middle Township.
7.1 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 |
|---|---|---|
| Sep 26, 1985 | 10.08 ft | — |
| Sep 26, 1985 | 10.08 ft | — |
| Oct 29, 2012 | 9.49 ft | — |
| Oct 29, 2012 | 9.49 ft | — |
| Aug 20, 2025 | 8.18 ft | — |
About This Gauge
Get Flood Alerts for Sluice Creek
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 Sluice Creek at S. Dennis (IN MLLW)?
The Sluice Creek at S. Dennis (IN MLLW) gauge is maintained by USGS (site 01411435) 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 Sluice Creek at S. Dennis (IN MLLW)?
The NWS-defined flood stage for Sluice Creek at S. Dennis (IN MLLW) is 7.1 feet. Action stage begins at N/A feet. Moderate flooding starts at 8.1 feet, and major flooding at 9.1 feet.
How do I get alerts when Sluice Creek rises?
Download StormCast free on Google Play, go to River Gauges, and add Sluice Creek at S. Dennis (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 Sluice Creek at S. Dennis (IN MLLW) gauge located?
The gauge is located in Cape May County, New Jersey at coordinates 39.1617°N, 74.8322°W. USGS site number: 01411435. 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
- <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.