Coordinates: 42°40′29″N 2°23′16″W / 42.6746°N 2.3879°W / 42.6746; -2.3879

Izki (river)

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Izki
File:Izki Ibaia - Río Izki 13 (49863421932).jpg
View of the Aranbaltza reservoir
Location
CountrySpain
Autonomous communityBasque Country
ProvinceÁlava
Physical characteristics
Mouth 
 • location
Ega river near Bujanda
Length15.74 km (9.78 mi)
Discharge 
 • average610 L/s (22 cu ft/s)
Basin features
ProgressionEga→ Ebro→ Balearic Sea
DesignatedMay 2003
Part ofEga-Berron ibaia / Río Ega-Berron
Reference no.ES2110020[1]

The Izki is a river in Álava, Basque Country, Spain. It is a tributary of the Ega river, itself a tributary of the Ebro. Most of its course is located within the Izki Natural Park. The river is part of the Ega-Berron Special Area of Conservation. It is home to a population of European mink,[2] a critically endangered species. The Eurasian otter is also present.[3]

Course

The Izki River has a length of 15.74 km (9.78 mi)[citation needed] and it constitutes the central axis of the Izki Natural Park, its basin covering about 60% of its surface. The most common rock type in the basin is sandstone, and most of it is covered by forests. Most tributaries of the Izki river are short streams. Near Korres, the river traverses an area dominated by calcarenites, forming a gorge[4] between the summits of Soila [eu] and Muela [eu].[5] After the gorge, the river reaches a wide alluvial plain where it converges with the Ega. The average discharge there is of 610 L/s (22 cu ft/s). In the summer, the dry season can be very marked, with some sections of the river and its tributaries drying out.[4] The small Aranbaltza dam is located in the gorge. From it, a surface canal diverts about 200–300 L/s (7.1–10.6 cu ft/s) of water into a reservoir near Bujanda which is also fed by a canal coming from the Ega river north of Atauri. The water from the reservoir is used (with an elevation difference of around 70 m (230 ft)) to power a small hydroelectric plant in Antoñana. The plant was built in 1905[6] and put back into operation in 2015.[7]

References

  1. ↑ "Ega-Berron ibaia / Río Ega-Berron". EUNIS. European Environment Agency. Retrieved 14 October 2022.
  2. ↑ "Izki". Aquila a-Life (in español). Retrieved 19 March 2023.
  3. ↑ López de Luzuriaga, Javier; Zuberogoitia, Íñigo; Zabala, Jabi (January 2008). "La nutria en el País Vasco" (PDF). SECEM. La nutria en España. Veinte años de seguimiento de un mamífero amenazado (in español): 207–215.
  4. ↑ 4.0 4.1 Izki (PDF). Euskal Mendizale Federazioa (Report) (in español). Sistema de Información de Biodiversidad. p. 11. Retrieved 19 March 2023.
  5. ↑ J. Pérez, Fernando (19 October 2013). "Los bosques vascos que no puedes perderte este otoño". Diario Vasco (in español). Retrieved 19 March 2023.
  6. ↑ Herreras Moratinos, Beatriz (2012). "Antoñanako Indarretxea / Central Hidroeléctrica de Antoñana". Euskadiko Industria Ondarea / Patrimonio Industrial en el País Vasco (PDF) (in euskara and español). Vitoria-Gasteiz: Servicio Central de Publicaciones del Gobierno Vasco. pp. 359–362. ISBN 978-84-457-3261-8. Retrieved 19 March 2023.
  7. ↑ "Se inaugura la Central Hidroeléctrica de Antoñana". iAgua (in español). Europa Press. 22 May 2015. Retrieved 19 March 2023.

External links

42°40′29″N 2°23′16″W / 42.6746°N 2.3879°W / 42.6746; -2.3879

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