Mexican Nationals Waters Law (Ley de Aguas Nacionales) determines that in emergencies, extreme shortage, or water overexploitation, the mexican water authority (CONAGUA) should publicate general agreements, with actions to guarantee the supply of domestic and urban use, and agree with stakeholders other appropriate actions. The objective of this agreement is to provide the legal framework that allows taking the necessary actions in the basins where it is detected the occurrence of severe, extreme or exceptional drought during 2019, through a biweekly monitoring of this natural phenomenon.