The national park of Las Tablas de Daimiel is a Spanish national park that protects the homonymous wetland, the Tables of Daimiel. The national park is in Daimiel and Villarrubia de los Ojos, in the province of Ciudad Real, in the autonomous community of Castilla-La Mancha. It is part of the La Mancha Humid Biosphere Reserve. The Tables are one of the last representatives of an ecosystem called fluvial tables that are formed when the rivers overflow in their middle sections, favored by phenomena of semiendorreism and the scarcity of slopes. The wetland is formed at the confluence of the Guadiana River and its Cigüela tributary and is one of the most important aquatic ecosystems of the Iberian Peninsula due to the variety and quality of the fauna and flora that inhabit it, as well as by the birds that use it in the migratory process. However, the survival of the park is threatened by overexploitation of aquifers.