Chesapeake and Delaware Canal at Chesapeake City (IN MLLW)

The past week

What floods at each level

• 8.67 ft

  (Mean Lower Low Water (MLLW)) The level reached on September 19, 2003 during Hurricane Isabel.

• 7.5 ft

  (MLLW) MAJOR FLOODING. At this level, widespread roadway flooding begins near the tidal sections of the Elk River, the Bohemia River, Back Creek and their tidal tributaries in Cecil County. Vulnerable homes and businesses may be 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.

• 6.5 ft

  (MLLW) MODERATE FLOODING. At this level, additional roadways near the tidal sections of the Elk River, the Bohemia River, Back Creek and their tidal tributaries begin to flood. 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.

• 6.1 ft

  (MLLW) Flooding begins along Back Creek in Chesapeake City. Flooding begins along Elk Creek near Courthouse Point. Flooding begins along Elk Creek near Hollywood Beach and Port Herman. Flooding begins along the Bohemia River near Town Point.

• 5.8 ft

  (MLLW) COASTAL FLOOD ADVISORY LEVEL.

• 5.5 ft

  (MLLW) MINOR FLOODING.

Highest crests on record