BREAKWATER 



H 



5 



SAND ACCRETION 





.»«• ''^:s -■?-'. •• - v S: n. ■ -.--'v. 



■/$■*■*"■'■''■'-'■' •-'■'.' ' "- v.V-Aa V 



5? '-.' fc-^'-;' -' -„ ; "• "•-;* -A. A V 



' -' ■■.'*;"* -'■•'"• '-'V V"- -'.'"-V- v ' ^ v 



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: - . ■ 



;: . , . - - ■ 



- - - . . . CV 



. .■■:; 



ORIGINAL SHORELINE' 



"" : ;/' ' : 



DETACHED EMERGENT BREAKWATER 



DIRECTION OF 

 TRANSPORT 



► 



NET LONGSHORE 



BREAKWATER 



SAND 

 ACCRETION 



\> 



^"""ADDITIONAL 

 -JiVA SHOALING 



■BREAKWATER 



iv-^r ORIGINAL SHORELINE 



*m&m 





''<%&, 



-..* 





"*V POSSIBLE -i/^y" 

 - '. EROSION^ 



-.,y.>;, - 



ATTACHED BREAKWATER 



Figure 12. The dotted lines show typical areas of erosion and sand accumula- 

 tion behind attached dogleg and detached solid breakwaters. The sand formation 

 behind the offshore breakwater is called a tombolo. 



23 



