Table 8 



Port Jefferson Jetties 



Port Jefferson, New York 



New York District 



Date(s) Construction and Rehabilitation History 



1871 A 600-ft-long riprap jetty was constructed east of the* harbor en- 

 trance to prevent shoaling in the channel. Crest elevation was 

 +6.5 ft mlw. 



1872 The jetty was extended to 1,050 ft, maintaining the same crest 

 elevation. 



1875 A 475-ft-long riprap jetty was built west of the harbor using 



3,933 tons of stone (Figure 12). Crest elevation was +11.0 ft mlw. 



1877 The east jetty was extended 50 ft seaward, and the entire jetty was 

 raised to +5.0 ft high water (hw). 



1878 The west jetty was extended 450 ft with a crest elevation of +2.0 ft 

 mlw, except the seaward end was +11.0 ft mlw. 



1879 The east jetty was extended 70 ft using 1,437 tons of stone. 



1881 Stone was placed on both jetties. 



1882 The east jetty was extended 120 ft using 2,020 tons of stone. 



1883 The west jetty was extended to 940 ft. Crest elevation of the jetty 

 was +11.0 ft mlw over the shoreward 550 St and +2.0 ft mlw seaward. 

 The middle of the +2.0 ft mlw section was +11.0 ft mlw, and the sea- 

 ard end was +14.0 ft mlw. Crown width was 4.0 ft at the seaward 

 250 ft, and side slopes were 1:1. The east jetty was extended to 

 1,390 ft at +5.0 ft hw, with a 4.0-ft crown width. The total cost of 

 the jetties since 1 87 1 was $79,000. 



1891 The east jetty was repaired over 600 ft with 1,464 tons of stone. 



1908 The east jetty was extended to 1,550 ft (Figure 12). 



1964 A survey indicated the jetties were in poor condition. 



1986 No further repair or maintenance information has been found. 



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