New London Barrier - New London, CT
PROJECT PERSONNEL: Owned and Operated by the City of New London, CT (860)
PROJECT PURPOSE: Hurricane Flood Protection
LOCATION: Project is located in Shaws Cove/New London Harbor, in the
city of New London, New London County, Connecticut
PROTECTED AREA: Provides protection from high tides caused by coastal
storms and hurricanes as well as from interior flooding caused by overbank flows
from Truman Brook to all areas of the Shaws Avenue Urban Development area.
Design Summary: New London
barrier was designed for a 100-year stillwater elevation of 10.5 Ft-NGVD. This
level is equivalent to a surge of 8.6 ft coincident with a mean spring high
water tide of 1.9 Ft-NGVD. Maximum wave runup is approximately 4 ft resulting
in a top elevation of the barrier to be 14.5 Ft-NGVD. The pumping station, gravity
conduit, and pressure conduit, were designed for a 10-year, 100-year and 100-year
TOTAL COST: $11,500,000
PLACED IN OPERATION: January 1985
Highest Ocean Levels of Record Since Project
Start of Damage = 4.0 Ft-NGVD
||6.0 - Hurricane "Gloria"
||5.5 - Coastal Storm
HIGHEST HISTORIC OCEAN LEVELS
||9.7 - Hurricane
||8.9 - Hurricane "Carol"
||6.2 - Hurricane