Major Flood
6.2 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
5.2 ft
Minor Flood
4.2 ft
What Floods at Each Level
7.66 ft
(Mean Lower Low Water (MLLW)) The level reached on October 29, 2012 during Post Tropical Cyclone Sandy.
7.01 ft
(MLLW) The level reached on February 5, 1998.
6.99 ft
(MLLW) The level reached on November 13, 2009.
6.94 ft
(MLLW) The level reached on May 12, 2008.
6.81 ft
(MLLW) The level reached on January 25, 2000.
6.59 ft
(MLLW) The level reached on January 23, 2016.
6.52 ft
(MLLW) The level reached on October 18, 2009.
6.36 ft
(MLLW) The level reached on October 31, 1991.
6.26 ft
(MLLW) The level reached on March 6, 2013.
6.25 ft
(MLLW) The level reached on December 12, 1992.
6.2 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 Rehoboth Bay, Indian River Bay and the tidal waterways that flow into them. 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.
5.2 ft
(MLLW) MODERATE FLOODING. At this level, widespread flooding of roadways begins with many roads becoming impassable near Rehoboth Bay, Indian River Bay and the tidal waterways that flow into them. 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.
4.8 ft
(MLLW) Flooding begins along Fred Hudson Road and Salt Pond Road (both are just north of Bethany Beach).
4.6 ft
(MLLW) Flooding begins in Long Neck, including DE Route 23.
4.5 ft
(MLLW) COASTAL FLOOD ADVISORY LEVEL.
4.4 ft
(MLLW) Flooding begins along sections of DE Route 1 between Dewey Beach and Bethany Beach, including the Delaware Seashore State Park. Flooding begins in Bethany Beach.
4.2 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 |
|---|---|---|
| Oct 28, 2012 | 7.66 ft | — |
| Feb 4, 1998 | 7.01 ft | — |
| Nov 12, 2009 | 6.99 ft | — |
About This Gauge
Get Flood Alerts for Indian 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 Indian River near Indian River Inlet (IN MLLW)?
The Indian River near Indian River Inlet (IN MLLW) gauge is maintained by USGS (site 01484683) 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 Indian River near Indian River Inlet (IN MLLW)?
The NWS-defined flood stage for Indian River near Indian River Inlet (IN MLLW) is 4.2 feet. Action stage begins at N/A feet. Moderate flooding starts at 5.2 feet, and major flooding at 6.2 feet.
How do I get alerts when Indian River rises?
Download StormCast free on Google Play, go to River Gauges, and add Indian River near Indian River Inlet (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 Indian River near Indian River Inlet (IN MLLW) gauge located?
The gauge is located in Sussex County, Delaware at coordinates 38.6098°N, 75.0680°W. USGS site number: 01484683. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Indian River
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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.