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Indian River near Indian River Inlet (IN MLLW)

National Weather Service gauge INRD1 · Delaware · Sussex County · 38.6098, -75.0680 · USGS 01484683

Stage at this gauge is reported IN MLLW.

Flood levels

Official flood levels at this gauge: minor flooding begins at 4.2 ft; moderate flooding begins at 5.2 ft; major flooding begins at 6.2 ft.

Minor flooding4.2 ft
Moderate flooding5.2 ft
Major flooding6.2 ft

Highest recorded crests

What the water does

National Weather Service impact statements for this gauge, in the Weather Service's own words.

4.2 ft(MLLW) MINOR FLOODING.
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.
4.5 ft(MLLW) COASTAL FLOOD ADVISORY LEVEL.
4.6 ft(MLLW) Flooding begins in Long Neck, including DE Route 23.
4.8 ft(MLLW) Flooding begins along Fred Hudson Road and Salt Pond Road (both are just north of Bethany Beach).
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.
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.
6.2 ft(MLLW) The level reached on December 12, 1992.
6.3 ft(MLLW) The level reached on March 6, 2013.
6.4 ft(MLLW) The level reached on October 31, 1991.
6.5 ft(MLLW) The level reached on October 18, 2009.
6.6 ft(MLLW) The level reached on January 23, 2016.
6.8 ft(MLLW) The level reached on January 25, 2000.
6.9 ft(MLLW) The level reached on May 12, 2008.
7.0 ft(MLLW) The level reached on November 13, 2009.
7.0 ft(MLLW) The level reached on February 5, 1998.
7.7 ft(Mean Lower Low Water (MLLW)) The level reached on October 29, 2012 during Post Tropical Cyclone Sandy.

Forecast office: NWS Mount Holly · River Forecast Center: Middle Atlantic River Forecast Center.

A NOAA tide station shares this spot: Indian River Inlet (Coast Guard Station), with tide predictions and official flood levels.

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