The purpose of this Agreement is to publicize the results of the technical studies of the surface national waters carried out by the National Water Commission (CONAGUA) in compliance with the provisions of Article 38 of the Law of National Waters and in which it is sought to identify the situation Integration of water resources in watersheds Lagartero, Yayahuita, Zacualpa, Papizaca, Presa La Concordia, Selegua, San Miguel, La Concordia, Aguacatenco, Aguzarca, San Pedro, Grande o Salinas, Presa La Angostura, Hondo, Tuxtla Gutiérrez, Suchiapa, Santo Domingo, Presa Chicoasén, Chicoasén, Encajonado, Cintalapa, Soyatenco, Alto Grijalva, De La Venta, Chapopote, Presa Nezahualcóyotl, Tzimbac, Zayula, Presa Peñitas, Paredón, Platanar, Mezcalapa, El Carrizal, Tabasquillo, Cunduacán, Samaría, Caxcuchapa, Basca, Yashijá, Shumulá, Puxcatán, Chacté, De los Plátanos, Tulijá, Macuxpana, Almendro, Chilapa, Tacotalpa, Chilapilla, De la Sierra, Pichucalco, Viejo Mezcalapa, Azul, Tzanconeja, Perlas, Comitán, Margaritas, Jatate, Ixcán, Chajul, Lacanjá, San Pedro, Laguna Miramar, Euseba, Caliente, Seco, Santo Domingo, Lacantún, San Pedro, Chixoy, Chocaljah, Chacamax, Usumacinta, Grijalva, Palizada, San Pedro y San Pablo, Laguna del Este, Laguna de Términos, Mamatel, Cumpan and Laguna del Pom y Atasta, which are part of the 83 basins that form the Hydrological Region Number 30 Grijalva-Usumacinta, with the purpose of determining the actions that will have to update the causes of utility and public interest that are specified in the Law itself, as well as to address the water problem existing in said region, in particular, the origin of modifying the current regulatory framework in matter control of the exploitation, use or use of national waters. In this sense, the study concludes recommending to modify the decree of 2012 in the part that indicates that the maximum volumes that can be concessioned in 53 of the 81 studied basins, establish a reserve of superficial national waters for urban public use by 400.117 million cubic meters and a reserve for environmental use or for ecological conservation for 97,886.07 million cubic meters counted at the exit of the Samaria, Caxcuchapa, Grijalva, San Pedro y San Pablo, Laguna del Este, Laguna de Términos; Mamatel, Cumpán and Laguna del Pom y Atasta, these is, In the discharge of the main channel to the sea, as well as in the closed basins Margaritas and Comitán. It also recommends how to update the regulatory framework of the basins where actually there is water availability (Cuencas La Concordia and Presa La Concordia).