Romain; however, between 1873/74 and 1983 overall surface area of Cape Island 

 increased from 12.2 x 10 6 m 2 to 15.3 x 10 6 m 2 , a net increase of 28,000 m 2 / 

 year. Erosion on the south and accretion north have resulted in a net north- 

 erly migration of Cape Island over the period of record. 



145. Murphy Island, north of Cape Romain Harbor, has accreted since 

 1873/74. The largest increase came between 1962/63 and 1983. These changes 

 are represented by the shoreline mapping procedure (Figure 39) . Accretion on 

 both sides of Cape Romain Harbor entrance has resulted in its narrowing from 

 approximately 2,700 m wide in 1873/74, to 2,050 m in 1934, to approximately 

 975 m wide in 1983. 



South Santee River Inlet (Map 18) 



146. Cedar Island forms the northeast side of South Santee River Inlet. 

 The island terminal spit accreted 850 m alongshore to the southwest at an 

 approximate rate of 14 m/year between 1873/74 and 1934. Jetties at Winyah Bay 

 to the north were completed about 1900. From the 1934 to 1962/63 survey, 

 rapid spit erosion occurred (2,300 m, 83 m/yr) alongshore. Then from 1962/63 

 to 1983, the spit accreted 420 m again. Net change was a loss in length from 

 1873/74 to 1983 of roughly 900 m. A reversal of alongshore drift between 1934 

 and 1962/63 is evidenced by a rapid rate of erosion during that time, plus 

 development of a small spit extending east and north from the eroded tip of 

 Cedar Island. This spit was not present on 1934 or 1983 surveys. 



147. Murphy Island on the west side of the inlet eroded alongshore from 

 1873/74 to 1934 as the inlet migrated to the southwest. The width of the 

 inlet throat decreased from 550 to 300 m during this interval. Reversal of 

 the drift between 1934 and 1962/63 caused only mild accretion on Murphy Island 

 and widening of the inlet to over 600 m. Return of the drift to its normal 

 southerly direction by 1983 resulted in accretion on both sides of the inlet 

 and a decrease of over 100 m in inlet width. 



North Santee Bay Inlet (Map 20) 



148. Santee Point, on the northeast side of North Santee Bay Inlet, 

 grew southward from 1872/73 to 1925 a distance of approximately 900 m. The 

 1925 survey shows several large islands seaward of South Island, which 

 appeared to have formed a platform for seaward and alongshore (500 m) accre- 

 tion of Santee Point by 1934. As with South Santee Inlet between 1934 and 

 1962/63, alongshore erosion removed 550 m from the length of Santee Point. 

 Net shoreline change by 1983 was minimal. The inlet's southwest side accreted 



115 



