La. Stat. tit. 38 § 2102
Police juries shall create and form irrigation districts when a petition to do so is filed by the property owners owning a majority of the acres of land within the limits of a proposed irrigation district, outside of the corporate limits of incorporated towns and cities. The petition shall describe the area to be included in the irrigation district, shall designate the name and domicile of the district and the names of the first commissioners thereof, and shall be signed by the petitioners. The petition shall be accompanied by a map showing the area to be included within the proposed irrigation district and the boundaries thereof, by a certificate of the clerk of court and exofficio recorder of the parish or parishes in which the land is situated certifying to the ownership of the land to be included in the irrigation district, outside the corporate limits of incorporated towns and cities, together with the acreage of each owner, as appears from the records of his office. If the ownership of any land is unknown, this fact shall also be made to appear by the certificate. Clerks of court and recorders of the parishes of the state shall furnish the certificate.
In creating an irrigation district composed of lands situated in more than one parish, the petition to create the district must be signed by the property owners owning a majority of the acres of land in each parish within the proposed district, outside of the corporate limits of incorporated towns and cities. The petition shall be presented to the police jury of the parish having the largest number of acres of land in the proposed irrigation district, outside of the corporate limits of incorporated towns and cities, and the irrigation district shall then be created by ordinance of the police jury.
La. R.S. § 38:2102