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Erosion
Beachsaver Reefs
What Are They Made From
Earlier Prototypes
NJ Pilot Reef Program
Placement Of Reefs
The Cost
Available
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Background
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The
Beachsaver reef system works with sand nourishment and ocean forces to
protect and extend the life of beaches. The reef reduces the volume of
sand required for a nourishment project, retains replenished sand as it
is pumped onto the beach, and keeps added sand on the beach longer by slowing
the rate of erosion.
The reef works to enhance
the long-term performance of beach fills in two ways. First, the reef forms
a partial barrier, preventing suspended sand from moving out to sea in
the return wave. This sand resettles instead in the nearshore zone or emergent
beach. Second, the energy of incoming waves are reduced by 20 to 30 percent
as they cross the reef and as they break farther offshore, taking less
of a toll on the beach front (see illustration above).
An important patented design feature of the reef is the "backwash
flume" (circled above). The flume consists of three slotted openings
which are wider on the curved beachward face and become narrower as they
arc upward to the top of the structure. As a storm wave recedes, the flume
projects a high velocity curtain of water and suspended sand upward off
the reef so that the next incoming wave cycles the sand back towards the
beach. This inhibition of the off shore movement of sand is key in erosion
control during storm events.
Breakwaters
International Inc.
417 U.S. Highway 202
Flemington, New Jersey 08822
(908) 806-3612
Fax (908) 782-4381
Email Breakwaters
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