Table 91 



Presque Isle Breakwaters 



Presque Island Peninsula, Pennsylvania 



Date(s) 

 1978 



1986 



Construction and Rehabilitation History 



Construction of three detached, offshore, rubble-mound, experimental, 

 breakwaters (Figure 251) was completed for beach erosion control. 

 The breakwaters were each 125 ft long and had crest els of +6.0 ft 

 Iwd and widths of 6 ft. Side slopes were 1V:2H, and armor stone 

 ranged from 1.5 to 3.5 tons (Figure 251). 



There are no records of maintenance repairs to the breakwaters since 

 construction, and they are considered to be in good condition. An 

 aerial view of the Presque Isle experimental breakwaters is shown in 

 Figure 252. A proposal for construction of a series of 58 offshore 

 breakwaters along the Presque Isle Peninsula is being considered. 

 Model tests of a representative portion of the peninsula and some of 

 the breakwaters were conducted (Seabergh 1983) . 



LAKE 



ERIE 



EXPERIMENTAL BREAKWATERS 

 AND INTERIM NOURISHMENT 

 COMPLETED JUNE 1978 



Figure 251. Presque Isle, Pennsylvania 

 371 



