Table 38 



Indian River Inlet Jetties 



Indian River Inlet, Delaware 



Philadelphia District 



Date(s) Construction and Rehabilitation History 



1939 Two parallel jetties were completed to provide inlet protection. The 

 jetties were 1,566 ft long and 500 ft apart. The shoreward 904 ft 

 and 890 ft of the north and south jetties, respectively, were con- 

 structed of steel sheet pile, and the seaward portions were con- 

 structed of stone. The stone jetties had a crest elevation of 

 +6.0 ft mlw, a crown width of 10.0 ft, and side slopes of 1V:1.5H 

 (Figure 49). 



1956 Storm damages to the south jetty were repaired. 



1957 The north jetty was repaired because of storm damages and was ex- 

 tended shoreward 320 ft because of shoreline recession and 

 deterioration of the sheet pile (Figure 49). 



1985 The jetty heads are in poor condition because of slope failure, sub- 

 sidence, and toe scour. Repair alternatives have been proposed, and 

 the use of dolosse has been suggested. Figure 50 is an aerial photo- 

 graph of the jetties taken in 1985. 



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