40 1- 



30 



20 



•- -10 



-20 



-30 



■40 



Complete onshore-offshore 

 exchange 



J I I I J, 



-10 -9 -8-7-6-5-4-3-2-10 I 2 3 4 5 6 7 



Beach Change (yd'/ft) 



9 10 



Figure 58. Beach versus nearshore volume changes at profile line IV, 

 Boca Raton. 



86 



