This document discusses Mexico's efforts to establish new water management models through the identification and analysis of water reserves. It outlines criteria for identifying water reserves, including water availability/stress, biodiversity importance, extraction restrictions, infrastructure, irrigation zones, overexploited aquifers, and population density. The analysis incorporates 7 core variables and 48 secondary variables across 728 basins. The goal is to reduce user risk, support biodiversity conservation, and ensure environmental services through a National System of water reserves and Public-Private Initiative with an initial budget of $10 million USD.