, name_etymology = , image = Río Oca.JPG , image_size = 250px , image_caption = Watershed of the Oca at Villalbos (Valle de Oca) , map = Valle del Ebro.jpg , map_size = 350 , map_caption = Oca river is the first

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 ...

tributary river on the right bank , pushpin_map = Spain Castile and León#Spain , pushpin_map_size = 350 , pushpin_map_caption= Location of the mouth with

Castile and León Castile and León ( es, Castilla y León ; ast-leo, Castiella y Llión ; gl, Castela e León ) is an autonomous community in northwestern Spain. It was created in 1983, eight years after the end of the Francoist regime, by the merging of the ...

, subdivision_type1 = Country , subdivision_name1 =

Spain , image_flag = Bandera de España.svg , image_coat = Escudo de España (mazonado).svg , national_motto = ''Plus ultra'' (Latin)(English: "Further Beyond") , national_anthem = (English: "Royal March") , i ...

, subdivision_type2 = , subdivision_name2 = , subdivision_type3 = , subdivision_name3 = , subdivision_type4 = , subdivision_name4 = , subdivision_type5 = , subdivision_name5 = , length = , width_min = , width_avg = , width_max = , depth_min = , depth_avg = , depth_max = , discharge1_location= , discharge1_min = , discharge1_avg = , discharge1_max = , source1 = Montes de Oca , source1_location =

Rábanos Rábanos is a municipality and town of northern Spain, Autonomous Community of Castile and León, province of Burgos, Shire of Montes de Oca, sub-shire of Tirón-Rioja Burgalesa. According to the 2004 census (INE INE, Ine or ine may refer to: ...

, Montes de Oca,

Burgos Burgos () is a city in Spain located in the autonomous community of Castile and León. It is the capital and most populated municipality of the province of Burgos. Burgos is situated in the north of the Iberian Peninsula, on the confluence of t ...

, source1_coordinates= , source1_elevation = , mouth = Horadada Gorge,

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 ...

river , mouth_location =

Oña Oña is a municipality and town located in the province of Burgos, Castile and León, Spain. According to the 2011 census (INE), the municipality has a population of 1,219 inhabitants. Main sights * Benedictine monastery of San Salvador de Oñ ...

La Bureba La Bureba is a ''comarca'' located in the northeast of the Province of Burgos in the autonomous community of Castile and León, Spain. It is bounded on the north by Las Merindades, east by the Comarca del Ebro, south-east by the Montes de Oca and ...

, mouth_coordinates = , mouth_elevation = , progression = , river_system = , basin_size = , tributaries_left = Cerratón, Anguilas, Homino , tributaries_right = Matapán , custom_label = , custom_data = , extra = The Oca river is a short river, about long, in the north of Spain. It is an affluent 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 ...

river that flows through the province of Burgos. It begins in the

Sistema Ibérico The Iberian System ( es, Sistema Ibérico, ) is one of the major systems of mountain ranges in Spain. It consists of a vast and complex area of mostly relatively high and rugged mountain chains and massifs located in the central region of th ...

range and flows north through the municipalities of

Villafranca Montes de Oca Villafranca Montes de Oca is a municipality, former medieval bishopric and present Latin titular see located in the province of Burgos, Castile and León, northern Spain. According to the 2005 census (Instituto Nacional de Estadística (Spain), I ...

, Valle de Oca,

Alcocero de Mola Alcocero de Mola is a municipality and town located in the province of Burgos, Castile and León, Spain. According to the 2004 census (INE), the municipality has a population of 53 inhabitants. The town was known only as Alcocero until 1938, when ...

, Prádanos de Bureba,

Briviesca Briviesca is a municipality and a Spanish city located in the north of the Iberian Peninsula, head of the judicial district of Briviesca, capital of the comarca of La Bureba and province of Burgos, autonomous community of Castile and León. Acco ...

Vileña Vileña is a municipality located in the province of Burgos, 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 ...

, the shire of

Bureba La Bureba is a ''comarca'' located in the northeast of the Province of Burgos in the autonomous community of Castile and León, Spain. It is bounded on the north by Las Merindades, east by the Comarca del Ebro, south-east by the Montes de Oca and ...

and Oña. The Oca River rises in the ''

comarca A ''comarca'' (, or , or ) is a traditional region or local administrative division found in Portugal, Spain and some of their former colonies, like Brazil, Nicaragua, and Panama. The term is derived from the term ''marca'', meaning a "march, ...

'' of Montes de Oca, near the town of Rábanos. Near its source, the river passes through the narrow, rock-lined gorge of La Hoz. This passage, long and high, was of great strategic value in the 11th century and was defended by the castle of Alba.

Affluents

From the

right Rights are law, legal, social, or ethics, ethical principles of Liberty, freedom or entitlement; that is, rights are the fundamental normative rules about what is allowed of people or owed to people according to some legal system, social convent ...

, the Oca receives the waters of the river Matapán and the streams Valsorda and Penches, while on the left it receives the waters of the rivers Cerratón, Anguilas and Homino, and the streams Valdazo and Hoyo.

References

Ebro's Water Planning Office
{{Reflist Rivers of Spain Ebro basin Rivers of Burgos Rivers of Castile and León

Affluents

See also

References