The various levee and drainage districts shall have control over all public drainage channels or outfall canals within the limits of their districts which are selected by the district, and for a space of one hundred feet on both sides of the banks of such channels or outfall canals, and one hundred feet continuing outward from the mouth of such channels or outfall canals, whether the drainage channels or outfall canals have been improved by the levee or drainage district, or have been adopted without improvement as necessary parts of or extensions to improved drainage channels or outfall canals, and may adopt rules and regulations for preserving the efficiency of the drainage channels or outfall canals.
La. R.S. § 38:113