Table 17 



Canaveral Harbor Jetties 



Canaveral Harbor, Florida, SAJ 



Date(s) 



1953- 

 1954 



Construction and Rehabilitation History 



1957- 

 1958 



1985 



Two rubble-mound jetties, each 1,150 ft long, were constructed to 

 provide channel protection (Figure 30). The south jetty was origi- 

 nally built in 1953 to a length of 850 ft and extended 300 ft in 

 1954. A 2-1/2-ft foundation blanket of material ranging from sand 

 to 125-lb stone was placed as a base for each jetty. Core stone 

 ranged from 200 to 4,000 lb and was placed to an elevation of -1 ft 

 mlw. Capstone ranged from 2 to 8 tons at the shoreward ends to 10+ 

 tons at the seaward ends. Crest elevations ranged from 6 to 8 ft 

 above mlw, and the crest width was 12 ft. Side slopes were 1V:1.5H 

 over the inner 1,100 ft of the south jetty and the inner 800 ft of 

 the north jetty and 1V:2H over the next 300 ft of the north jetty. 

 The remaining 50-ft sections had transition side slopes to 1V:2.5H, 

 this being the side slope of the semicircular head sections. The 

 jetty design was based on Irribarren's equation using 9- and 12-ft 

 wave heights. The estimated cost of the jetties was $631,000. 



Revetment was placed at the shoreward ends of the jetties. Splash 

 aprons were placed on the channel side of the jetties to prevent 

 scour from wave overtopping (no details) . 



The jetties have not been repaired since construction and are in 

 good condition. The Federal project calls for a 37-ft-deep channel, 

 but the Navy presently maintains a 44- by 400-ft channel between the 

 jetties. 



Figure 30. Canaveral Harbor, Florida 

 55 



