La. Stat. tit. 38 § 2554
The department of public works is hereby granted the power and authority and is hereby directed to build and construct such dams and other works as may be necessary or beneficial to carry out the purposes of this Part and to create and impound an industrial water supply, in accordance with a survey and estimates to be made and established by the engineers of the said department. The board of commissioners of the Bayou D'Arbonne Lake Watershed District, with its powers and duties as defined herein, is hereby created and established for the purpose of aiding and assisting the said department of public works during the actual construction stage and process of this project, and is established as the governing authority of said district after the completion of the construction process by the said department of public works of the state of Louisiana.
La. R.S. § 38:2554