La. R.S. 9:1115.3

Any act by which the state has transferred or hereafter transfers ownership of immovable property which, at the time of the transfer, encompasses inland non-navigable water beds or bottoms within the boundaries of the property transferred, is presumed to convey to the transferee the ownership of the inland non-navigable water bottoms, unless title thereto has been expressly reserved by the state of Louisiana in the act. Nothing contained in this Part shall be construed as conveying to any person title to any lands that have not previously been conveyed or transferred by the state.