In Sandbridge, profile line 9 appears to have an erosional trend. 

 This profile line has proved to be vulnerable to storms, and storm 

 recovery has usually been slow. Profile line 10 has a slight accre- 

 tional trend, with the exception of the major influence of the 25 

 November 1975 storm. 



The Back Bay area (profile lines 11 to 15) appears to be in 

 an accretional state, except for profile line 11 which appears to 

 be erosional due mainly to the effects of the 25 November 1975 storm. 

 Beginning with profile line 14, and moving south, the beaches become 

 wider and flatter, and from the survey data, tend to display "net" 

 accretional trends. 



The entire False Cape area (profile lines 16, 17, and 18) appears 

 to be accretional (with profile line 17 less accretional) . An 

 intertidal and subtidal area of stumps believed to be the remnants 

 of a cypress forest, is located in the northern section of this area 

 between profile lines 15 and 16. Most of the time these stumps are 

 nearly covered with sand, and are most often exposed only after 

 storms. In general, the stumps were most exposed (since 1972) in 

 November 1975, and gradually became covered during the following 

 year. Although storm effects may be fairly severe, recovery is 

 usually very fast, and the long-term trend is accretional. 



In general, the trends readily apparent are: 



(a) Accretion at the north and south ends of the study area 

 (profile lines 1 and 2 and 12 to 18). Profile lines 1, 

 14, 16, and 18 have statistically very significant (99.0 

 percent) accretional trends. 



(b) Erosional profile lines are, in general, in the center of 

 the study area. Profile lines 3, 6, 9, and II have sta- 

 tistically very significant (99.9 percent) erosional trends. 



(c) Most active profile lines (i.e., large fluctuations in 

 beach volume changes) also tend to be at the north and 

 south ends (profile line 2, 5, 7, and 17) and the most 

 inactive profile lines (9 to 13) are in the center 

 (Table 6) . 



Superimposed on these trends are many exceptions (e.g., accre- 

 tion at profile line 10 between two erosional profile lines) and 

 extensive masking of the natural trends by man's activities (e.g., 

 profile lines 1, 3, 4, 5, and 8). 



57 



