Figure 10 shows bottom changes at station 109+00 (midprofile of the trap 

 area) between April 1974 (immediately after dredging in phase I of the study) 

 and July 1974 (4 months later) surveys. Predredging conditions in September 

 1973 are also shown. 



Breokwoter 



50 100 ISO 



Figure 10. 



200 250 300 350 400 450 

 Distance Along Profile (m) 



Profile changes at range 109+00 



500 550 600 650 



Figure 11 shows bathymetric changes within the sand-trap area from 17 April 

 to 30 July 1974; only major changes in bathymetry are reflected due to con- 

 touring at 1-meter intervals. The map indicates a zone of deposition from sta- 

 tions 102+00 and 122+00 along the shore and 30 to 300 meters seaward of the 

 working base line. The figure is representative of the type of filling the 

 sand trap experienced during the entire project study. Most of the sand-trap 

 deposition occurred well within 300 meters of the shoreline. 



Detached Breakwater- 



-450 



101 + 00 



105 + 00 110*00 



■ +9 Meter 

 ^ +6 Meter □ No Ctionqe 



115 + 00 

 ^ + I Meter 



120+00 



+ 3 Meter 

 + 2 Meter 



I Meter 



Figure 11. Elevation changes between 17 April and 30 July 1974 surveys, 



23 



