S.C. Code Ann. § 4-3-120

Chester County is bounded as follows: on the north by a line beginning at a hickory tree on the southwest side of the Catawba River about ten chains above the mouth of Ferrill's Creek and running (nearly 80° west) by an old line called and known by the name of the Line of the New Acquisition to an ash and black gum on the bank of Broad River on Robert Elliott's lands; thence down Broad River to the mouth of Sandy River; thence in a direct line to the mouth of Rock Creek on the Catawba River; thence up to the Catawba River to the place of beginning.