S.C. Code § 4-3-40
Anderson County is bounded as follows: on the northwest and north by Oconee and Pickens Counties, from which it is divided by a line commencing at the mouth of Cane Creek, on Tugaloo River and running thence to the point where Eighteen Mile Creek is crossed by the road leading from Pendleton to Hagood's Store, thence to the mouth of George's Creek, on the Saluda River; on the northeast and east by Greenville County, from which it is separated by the Saluda River; on the southeast by Abbeville County, from which it is divided by a line drawn from a marked black gum on the east bank of the Savannah River, at the foot of Grape Shoals, to a willow oak, marked "A. & P.," on the south side of the Saluda River; on the southwest by the state of Georgia, from which it is separated by the Savannah River.
S.C. Code § 4-3-40