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The Cidacos River near Arnedo
The Cidacos River is a tributary of the Ebro. Its source is Los Campos, in Soria, and it flows for 77 km (48 mi) until its reaches the Ebro at Calahorra (La Rioja).
It flows through or past various towns like Villar del Río, Yanguas, Enciso, Peroblasco, Arnedillo, Santa Eulalia Somera, and Bajera, Herce, Arnedo, Quel, Autol, and Calahorra. The river is used for irrigation purposes and is often dried up near Calahorra.
Bridge over the Cidacos near Arnedillo
Coordinates: 42°12′38″N 2°12′21″W / 42.21056°N 2.20583°W