La. Stat. tit. 38 § 1662
At the time of the construction in any district organized under this Part of the plan for reclamation hereinbefore referred to, all ditches or systems of drainage already constructed in the district and all watercourses shall, if necessary to the drainage of any of the lands in the district, be connected with and made a part of the works and improvements of the plan for reclamation of the district. No ditches, drains or systems of drainage constructed in the district after the completion of the plan for reclamation of the district, shall be connected therewith, unless the consent of the board of commissioners shall be first obtained. The consent shall be in writing and shall particularly describe the method, term, and conditions of the connection, and shall be approved by the chief engineer. The connection, if made, shall be in strict accord with the methods, terms, and conditions laid down in the consent. If the land owners wishing to make the connection are refused by the board of commissioners or decline to accept the consent granted, the land owners may bring suit against the board of commissioners for the connection, in the district court having jurisdiction, and the matter in dispute shall be decided in a summary manner by the courts. No connection with the works or improvements of the plan for reclamation of the district or with any ditch, drain or artificial drainage wholly within the district, shall be made, caused, or effected by any land owners, company, or corporation, municipal or private, by means of or with any ditch, drain, cut, fill, roadbed, levee, embankment, or artificial drainage, wholly without the limits of the district, unless the connection is consented to by the board of commissioners, or in the manner hereinbefore provided.
La. R.S. § 38:1662