Horna, near Sigüenza, in the province of Guadalajara. Its tributaries are the Torote, the Sorbe, the Cañamares, the Salado, the Dulce, the Aliendre, and...

Somosierra, Barahona and Ministra, with the headwaters of the rivers Jarama, Cañamares and Henares. The Sistema Central also penetrates the northwest of the...

which receives water from the Dulce, Salado, Hoz, Cercadillo, Frío, Cañamares, Bornova, Sorbe, Riatillo, Aliendre, Badiel, Torote rivers and Las Dueñas...