S.C. Code Ann. § 3-5-370: State shall retain concurrent jurisdiction over lands for purpose of civil and criminal process.

The State retains concurrent jurisdiction with the United States over any lands acquired and held in pursuance of the provisions of this article so far as that all civil and criminal process issued under authority of any laws of this State may be executed in any part of the premises so acquired for such inland waterway or for the buildings or constructions thereon erected for the purposes of such inland waterway.