Rehoboth Bay at Dewey Beach (IN MLLW)

The past week

What floods at each level

• 7.34 ft

  (Mean Lower Low Water (MLLW)) The level reached on March 6, 1962.

• 5.73 ft

  (MLLW) The level reached on October 29, 2021.

• 5.68 ft

  (MLLW) The level reached on October 29, 2012 during Post Tropical Cyclone Sandy.

• 5.3 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 and the tidal waterways that flow into it. 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.

• 4.3 ft

  (MLLW) MODERATE FLOODING. At this level, widespread flooding of roadways begins with many roads becoming impassable near Rehoboth Bay and the tidal waterways that flow into it. 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.

• 3.6 ft

  (MLLW) COASTAL FLOOD ADVISORY LEVEL.

• 3.5 ft

  (MLLW) Flooding begins at Old Landing on Rehoboth Bay. Flooding begins along sections of DE Route 1 between Dewey Beach and Indian River Inlet, including the Delaware Seashore State Park. Flooding begins in Dewey Beach.

• 3.3 ft

  (MLLW) MINOR FLOODING.

Highest crests on record