Atlantic Coast at Seavey Island (IN MLLW)

The past week

What floods at each level

• 13.5 ft

  Record flooding. Expect inundation of roads and buildings along the waterfront and back bays that has never occurred in previous events. Several vulnerable coastal roads inundated with several feet of water. Route 1 in Portsmouth inundated near Sagamore Creek. Route 1B inundated in multiple locations on all access points to New Castle.

• 13 ft

  Near flood of record with major widespread coastal flooding expected. Numerous buildings inundated along Portsmouth waterfront and the North Mill Pond area. Residential roads in Kittery flooded, isolating neighborhoods. Route 1B on the causeway and Wentworth Road leading to New Castle are most imapcted.

• 12.5 ft

  Flooding impacts roads in New Castle with water approaching the 1B causeway and Wentworth Road.

• 12 ft

  Moderate flooding of low lying coastal areas in Kittery, Portsmouth, New Castle, and Newington. Flooding expands in Portsmouth with numerous streets inundated along the waterfront. Some commercial and residential buildings in Portsmouth and Kittery impacted.

• 11.5 ft

  Flooding impacts Ceres and Mechanic Street in Portsmouth.

• 11 ft

  Minor flooding of low lying coastal locations in Kittery, Portsmouth, New Castle, and Newington. Vulnerable waterfront pier locations, low lying causeways, and roads could see up to 1 foot of inundation.

Highest crests on record

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