This document discusses hydrological plans and the National Spanish Hydrological Plan. It specifically mentions the Ebro River Basin and features such as the Assut de Xerta dam and the Senia reservoir. The hydrological plan aims to ensure adequate water supply while protecting the environment. It outlines measures to maintain river ecosystems and prevent issues like subsidence or delta regression. Irrigation channels are also discussed as a way to supply water for agriculture in areas with low rainfall. The Plataforma en Defensa de l'Ebre is mentioned as a social platform that advocates for protection of the Ebro River.