Coastal Inundation and SLOSH Maps

The Connecticut coastline is susceptible to flooding from both river floods and coastal storm effects, with over many permanent residents and additional seasonal residents. 

The US Army Corps of Engineers has created Sea, Lake, and Overland Surge from Hurricanes (SLOSH) maps for each Connecticut coastal community, and those have been included as attachments below for planing purposes.


The following Sea, Lake, and Overland Surge from Hurricane (SLOSH) maps represent the most up-to-date hurricane surge data available. These maps are intended for planning purposes only.

Please follow the instructions of local officials during an emergency.

DEMHS Region 1 DEMHS Region 2 DEMHS Region 4
Bridgeport Branford East Lyme
Darien Clinton Groton
Fairfield East Haven New London
Greenwich Guilford Old Lyme
Norwalk Madison Stonington
Stamford Milford Waterford
Stratford NewHaven
Westport Old Saybrook

West Haven