The Cidacos River is a

tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...

of the

Ebro , name_etymology = , image = Zaragoza shel.JPG , image_size = , image_caption = The Ebro River in Zaragoza , map = SpainEbroBasin.png , map_size = , map_caption = The Ebro ...

. Its source is

Los Campos LOS, or Los, or LoS may refer to: Science and technology * Length of stay, the duration of a single episode of hospitalisation * Level of service, a measure used by traffic engineers * Level of significance, a measure of statistical significance ...

, 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 Yanguas is a municipality located in the province of Soria, Castile and León, Spain. According to the 2004 census (INE INE, Ine or ine may refer to: Institutions * Institut für Nukleare Entsorgung, a German nuclear research center * Instit ...

, Enciso, Peroblasco,

Arnedillo Arnedillo is a village in the province and autonomous community of La Rioja, Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin) ...

, Santa Eulalia Somera, and Bajera,

Herce Herce is a town and municipality in La Rioja province in northern Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: " ...

, Arnedo, Quel,

Autol Autol is a village in the province and autonomous community of La Rioja, Spain. River Cidacos 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 Eb ...

, and Calahorra. The river is used for

irrigation Irrigation (also referred to as watering) is the practice of applying controlled amounts of water to land to help grow Crop, crops, Landscape plant, landscape plants, and Lawn, lawns. Irrigation has been a key aspect of agriculture for over 5,00 ...

purposes and is often dried up near Calahorra.

See also