La. Stat. tit. 30 § 145
Effective January 1, 1975, and in accordance with the provisions of Article VII, Section 4(E) of the Louisiana Constitution of 1974, the state treasurer of the state of Louisiana is hereby authorized and directed to remit an amount equal to one-tenth of the royalties accruing to the state in each month from mineral leases on state owned lands, lake and river beds, and other water bottoms belonging to the state or the title to which is in the public for mineral development to the governing authority of the parish in which severance or production occurs. In the calendar year beginning January 1, 1975 and thereafter, the distribution of the aforesaid royalties to the parish shall be made by the state treasurer on the twentieth day after the last day of every third month. Notwithstanding the provisions of the preceding sentences, so long as any bonds issued by a parish payable from a pledge and dedication of moneys deposited in the Royalty Road Fund established by Article IV, Section 2, of the Louisiana Constitution of 1921 (the "Royalty Road Fund") or additional bonds hereafter issued on a parity therewith remain outstanding, or until irrevocable provision is made for their payment in principal and interest, the state treasurer, prior to remitting any such royalty payments directly to the parish in any calendar year shall make all payments required for debt servicing by the resolutions or other instruments providing for the issuance of such bonds in that calendar year.
La. R.S. § 30:145