Table 9 1
Isle Breakwaters
Presque Island Peninsula, Pennsylvania
Construction and Rehabilitation History
Construction o f three detached, offshore, rubble-mound, experimental,
1978
breakwaters (Figure 251) was completed for beach erosion control.
The breakwaters were each 125 ft long and had crest els of
ft
and widths o f 6 ft. Side slopes were
and armor stone
ranged from 1.5 to 3.5 tons (Figure 2 5 1 ) .
There are no records of maintenance repairs to the breakwaters since
1986
construction, and they are considered to be in good condition. An
aerial view of the Presque Isle experimental breakwaters is shown in
Figure 2 5 2 . A proposal for construction of a series of 5 8 offshore
breakwaters along the Presque Isle Peninsula is being considered.
Model t e s t s of a representative portion of the peninsula and some of
the breakwaters were conducted (Seabergh 1983).
Figure 251.
Presque Isle, Pennsylvania
37 1
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