S.C. Code Ann. § 4-3-230

The portion of Charleston County described below is hereby annexed to and made a part of Dorchester County: Beginning at a stake on what was the Berkeley-Charleston County line, what is now the Berkeley-Dorchester County line, and running in a southwesterly direction for a distance of four thousand one hundred thirty-two and twenty-two hundredths feet along what is now Charleston County to a stake on what is commonly known as the Owens Road, the old Dorchester-Charleston County line; thence, running in a Northwesterly direction for a distance of nine hundred twenty feet along said Owens Road and Dorchester County to the center of the run of what is commonly known as Sawmill Branch, the old Charleston-Dorchester County boundary line; thence, running along said Sawmill Branch in a northeasterly direction to the old Berkeley-Dorchester-Charleston County lines; thence, running in a southeasterly direction for a distance of eight hundred seventy-nine and five-tenths feet along the old Berkeley-Charleston County line, now the Berkeley-Dorchester County line to the stake designated "B" on a plat of J.N. Frank, surveyor, dated 12 August, 1968.