Second, the city has limited naturally available water sources due the scarcity of surface and groundwater resources. This has led to a reliance on water from the Colorado River Bernal, 2005; Marcus, 2000. To address these issues, a comprehensive and systemic approach was used as a theoretical framework.
En segunda medida, la ciudad tiene una limitada disponibilidad natural de las fuentes de agua debido a los escasos recursos hídricos propios, tanto superficiales como subterráneos, característica natural que la condiciona a una dependencia de abasto de agua del Río Colorado Bernal, 2005; Marcus, 2000.