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Simulación hidrológica del caudal del estero Batuco en la microcuenca agroforestal Batuco (Ránquil, Región del Ñuble, Chile) bajo condiciones climáticas presentes y futurasArtículo de revistaSe estima el comportamiento del caudal del estero Batuco, principal afluente de la microcuenca agroforestal Batuco en la Comuna de Ránquil, entre enero de 1975 y diciembre de 2064, en el escenario del cambio climático RCP8.5. Para tal efecto se simuló hidrológicamente la microcuenca Batuco, usando el modelo y software en versión gratuita WEAP. La información de entrada del modelo para estimar el caudal simulado provino de distintas bases de datos, tanto in situ como de reanálisis cercano a la zona de estudio, así como de datos aproximados del consumo (habitantes y cultivos). Se crearon series temporales para la precipitación y temperatura con los datos in situ, para posteriormente usarse como base para aplicar una corrección de sesgo a los datos de reanálisis Arclim. Los resultados son una primera aproximación que podrá ser mejorada cuando se pueda calibrar in situ con datos de caudal observado, los cuales actualmente no existen para la zona de estudio. No obstante, evidencian tendencias claras a la reducción sostenida de los caudales. Traditional leadership on the commons: main challenges for leaders of community organizations to govern rural water in Ránquil, ChileCapítulo de libroWater community organizations are essential for water management in rural areas in the majority of Latin American and Caribbean countries, including Chile. However, Chile is the only country in this region where water is traded as an asset and is subjected to property rights. Despite this legal context, the behavior of local leaders and the Water Committees management system consider water as a commons. Consequently, these committees face constant obstacles caused by the duality of water management systems present in the country. For these reasons, this chapter aims to visualize the challenges faced by these committees in the context of increasing water scarcity to guarantee the local communities’ and users’ access to water. The study addresses the perspectives of leaders and members of Water Committees of the district of Ranquil, a highly vulnerable territory located in South-Central Chile. Some of the main challenges identified deal with issues such as water outages, poor water quality, and the presence of forest plantations. Equally important are some obstacles related to interaction with other stakeholders of the territory, the lack of support from the state, and issues within the committees’ organization and members.