La. R.S. 9:1108

Any patent or transfer heretofore or hereafter issued or made is null and void, so far as same purports to include such navigable waters and the beds thereof, as having been issued or made in contravention of the public policy of this state and without any prior authorization by law; provided that the provisions of this Section shall not affect the laws of accretion or apply to lands that were susceptible to private ownership on the date of the patent or transfer by the state or a state agency.