Texas v. Louisiana

We have already decided that the relevant boundary between the States of Texas and Louisiana is the geo graphic middle of Sabine Pass, Sabine Lake, and Sabine River from the mouth of the Sabine in the Gulf of Mexico to the thirty-second degree of north latitude. 410 U. S. 702 (1973). We have also held that all islands in the east half of the Sabine River when Louisiana was admitted as a State in 1812, or thereafter formed, belong to Louisiana. Delimitation of the boundary and decision as to ownership of the islands in the west half of the Sabine were deferred pending further proceedings…