S.C. Code § 3-3-250
The jurisdiction and control of this State has been granted and ceded to the United States in and over the parcel or tract of land and land covered with water hereinafter described, to wit: All that piece, parcel or tract of marshland, containing nine hundred and thirty-seven acres, more or less, situate, lying and being in the parish of St. Thomas in Berkeley County on the east side of Cooper River, according to a survey made by J. H. Dingle, surveyor, being bounded on the south and west by the Cooper River, on the east by Clouter's Creek and Broad Creek and on the north by a similar tract of marshland formerly the property of Maria D. Winthrop and being the parcel conveyed to the United States by deed of said Maria D. Winthrop dated March 21 1902.
Said grant and cession was and shall remain subject to the provisions set forth in the last two paragraphs of Section 3-3-170.
S.C. Code § 3-3-250