Table 28 



Mispillion River Jetties 



Kent and Sussex Counties, Delaware 



Philadelphia District 



Date(s) Construction and Rehabilitation History 



1859 A 560-ft-long jetty was constructed by local interests north of the 

 entrance. The jetty was installed by placing a row of close-fitting 

 piling and brush. 



1879 The jetty had deteriorated considerably, and the Federal government 

 made repairs. 



1896 A 350-ft-long stone-filled timber crib dike was constructed on the 

 west side of the new channel. 



1897 The jetty was extended shoreward 200 ft at a cost of $1,600. 



1899 Repairs were made to 141 ft of the 1897 extension at the seaward end 

 at a cost of $506. 



1901 The stone-filled timber crib dike had become a channel obstruction 

 and was removed. 



1904 The jetty was extended 805 ft shoreward by placing stone over brush- 

 filled pile and timber crib. The extension was 12.0 ft wide with 

 pile elevations of +11.0 ft mlw and stone elevations of +8.0 ft mlw. 

 The gap between the extension and the existing jetty ends was filled 

 with 313 cu yd of stone. 



1907 The jetty was extended 85 ft shoreward at a cost of $870, using 1904 

 construction geometry. The extension was classified as repairs. 



1908 Repairs were made to 68 ft of the jetty damaged by a storm on Jan- 

 uary 11, 1908. A jetty was constructed south of the entrance and 

 parallel to the north jetty. The south jetty was 3,300 ft long and 

 was constructed by placing stone over brush-filled pile and timber 

 crib for 2,200 ft, and over an existing 1 , 100-ft-long bulkhead. The 

 jetty was 6.0 ft wide with pile elevations of +7.0 ft mlw and stone 

 elevations of +5.5 ft mlw. The north and south jetties were separ- 

 ated by 210 ft. Costs of repairs and new construction were $22,770 

 and $350,000, respectively. The locations of the jetties are shown 

 in Figure 34. 



1911 The south jetty was extended 1,800 ft at a cost of $18,431 using 1904 

 construction geometry. Repairs were made to the south jetty by fill- 

 ing settled sections with 96 cu yd of stone. The cost was $18,431 

 for extension and $384 for repairs. 



(Continued) 



58 



