Louisiana Revised Statutes Tit. 34, § 840. Discharge of grading material into Mississippi River;  penalty

Any master or mate of any vessel, or other person who causes to be discharged into the Mississippi river or any of its tributaries, any ballast, gravel, sand or other material used for or suitable for filling or grading purposes, shall be fined not less than ten dollars and not more than one hundred dollars, and imprisoned not less than ten days and not more than thirty days or both.  The enforcement of this Section shall not interfere with public works, the building of jetties, stopping of crevasses, or the enforcement of health ordinances.