Harbor is Cummings Point, on Morris Island. From 1857/58 to 1900, Cummings 

 Point retreated alongshore approximately 600 m. This coincided with landward 

 erosion of the entire northern portion of Morris Island, prior to jetty com- 

 pletion in 1895. From 1900 to 1955, Cummings Point grew northward into the 

 harbor approximately 600 m. From 1955 to 1983, there was no net change. Net 

 change from 1857/58 to 1983 was a slight increase in length of approximately 

 60 m. 

 Breach Inlet (Map 13) 



134. The northeastern side of Breach Inlet has been accreting both sea- 

 ward and alongshore to the southwest since first surveyed in 1875. Net change 

 between 1875 and 1983 was approximately 180 m (1.7 m/year) with maximum 

 advance (5 m/year) occurring between 1921 and 1933/34. Southwest of the 

 inlet, alongshore erosion occurred during the data interval. Net change on 

 the southwest side has been approximately 120 m (1.1 m/year) of erosion 

 between 1875 and 1983. This erosion trend was punctuated by a period of no 

 net change between 1921 and 1933/34 and 60 m of accretion between 1933/34 and 

 1962/64. Inlet throat width decreased from 300 m in 1875 to 180 m in 1962/64 

 and increased to 210 m by 1983. 



Dewees Inlet (Map 14) 



135. The southwest side of Dewees Inlet had numerous, but small, 

 changes between 1856/57 and 1983. Its maximum mapped seaward extent was in 

 1921, but as of 1983, it was 150 m landward of that position. The northeast 

 side of the inlet is bounded by Dewees Island. Dewees Island has experienced 

 rapid onshore erosion along its southern end and accretion along its northern 

 shoreline, resulting in reorientation of the shoreline from north-south in 

 1856/57 to northeast- southwest in 1983. A net loss in surface area of 2.0 x 

 10 6 m 2 over the 1856/57 to 1983 period resulted. Rate of loss varied from 

 30,000 to 60,000 m 2 /year, except during 1921 to 1934, when there was a net 

 accretion of 157,000 m 2 . The new shoreline of Dewees Island is roughly paral- 

 lel to Isle of Palms and Capers Island but landward of the former and seaward 

 of the latter. Erosion on the south end of Dewees Island and small changes 

 noted to Isle of Palms have resulted in a net widening of Dewees Inlet from 

 approximately 430 to 550 m between 1856/57 and 1983. 



Capers Inlet (Map 14) 



136. Previously discussed changes on Dewees Island, particularly accre- 

 tion on the north end, have influenced Capers Inlet. Northeast of the inlet, 



111 



