It is declared a Protected Natural Area, with the character of Flora and Fauna Protection Area, the area known as Laguna Madre and Rio Bravo Delta, located in the municipalities of Matamoros, San Fernando and Soto La Marina, in the state of Tamaulipas. The area is integrated by a polygon corresponding to the buffer zone, within which ten subzones of management. These areas are considered fragile and sensitive environmental systems; therefore, the general public must abide by the provisions of the respective Management Program and the provisions contained in the Decree published on April 14, 2005 in the Official Gazette of the Federation.
Natural Protected Area for the conservation of biodiversity with International Designation: RAMSAR site with registration number 1362; MaB in the year 2006.