The Department of Public Works shall maintain and operate all navigation locks, lock facilities and appurtenances thereto when they form a part of a levee system, including the navigation locks, lock facilities and appurtenances constructed in the main line Mississippi river levee near Empire, in the Parish of Plaquemines, and the navigation locks in the main line Mississippi river levee situated near Ostrica, in the Parish of Plaquemines.
La. Navigation and Shipping § 34:344