80 60 40 20 20 40 60 60 100 120 140 160 



(cd- Fig. 65) 



*\o=^ 



dm 



(Fig.65) 



iginol 



beach 



slope 



-10 



Twc 



QT 



d OT Grdin 



meet 



FIGURE 66. SLOPE ON DOWN DRIFT SIDE OF INTERMEDIATE GROIN 



88 



