RVERRGE flNNURL LONGSHORE SRND TRRNSPORT RRTE (cu yd X 10 

 WITHOUT PROJECT (2R) 



"3, 



100 120 140 160 180 200 220 240 260 



ALONGSHORE COORDINATE 

 Figure 7. Alternative WP2A: average annual longshore sand transport rates 



proposed channel. This region of accretion is followed by a wider zone of 

 shoreline erosion further away from the entrance system. On the southeast 

 side of the proposed entrance system, the alongshore width of the accretive 

 beach varies from between 1400 ft and 2800 ft. The maximum berm width of the 

 accretive beach occurs immediately adjacent to the jetty and varies from 

 between 400 ft and 700 ft. On the northwest side of the entrance system, the 

 width accretive beach varies from between 1200 ft and 2000 ft. The maximum 

 berm width on the northwest side again occurs immediately adjacent to the 

 jetty and varies from between 300 ft and 400 ft. 



In the simulations in which year 1 of the southern swell wave conditions 

 were used (Alternatives 3 and 4, simulation codes PR01B and PR02B, not shown 

 in this paper; see Gravens (1990) as input to the shoreline change model the 



80 



