Entrepeñas is a reservoir located in the Alcarria Baja of Guadalajara, on the bed of the Tagus River. It was inaugurated in 1956. In addition to the Tagus River, it receives waters from the Valdetrigo, Barranco Grande, La Solana and Ompolveda rivers, among others. Its dam is located between the municipalities of Sacedón and Auñón next to the town to which it gives its name to the reservoir. It occupies an area of ​​3,213 hectares and its total capacity is 835 hm³.   It is located on the bed of the Guadiela River, a tributary of the Tagus River. The dam was inaugurated in 1958 with a height of 78.10m and with a water damming capacity of 1,638 hm³ over an area …