Table 6 



Larchmont Harbor Breakwater 



Larchmont, New York 



New York District 



Date(s) Construction and Rehabilitation History 



1906 Construction was completed on a 1 ,440-ft-long stone breakwater, (Fig- 

 ure 10). Crest elevation was +10.0 ft mlw, crown width was 5.0 ft, 

 and side slopes were 1:1. Stone sizes 8.0 to 10.0 tons were placed 

 in random fashion. Initial construction costs were $71,065. 



1967 A survey of the breakwater indicated the entire length was below 



design elevation and varied from +4.0 to +8.0 ft mlw. A localized 

 depression of +2.0 ft mlw was located approximately 1,300 ft from the 

 shoreward end. The breakwater was submerged during high tides, which 

 created danger areas and was only partially effective as a barrier to 

 storm waves. The structure had no breaks and was considered stable. 



1969 The entire breakwater was rehabilitated by adding 8.0- to 10.0-ton 

 stone in pell mell fashion to raise the elevation up to original 

 design. Crown width remained 5.0 ft, and side slopes were 1V:1.5H. 

 Cost of rehabilitation was $215,500. A 12.5-ft, 4.9-sec design wave 

 was used. 



1986 No further repair or maintenance information has been found. 



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