Izki (river)

The River's Travel

The Izki River has a length of 15.74 km and it constitutes the central hydrologic axis of the National Park of Izki, its basin occupying about 60 % of its surface. Practically all of its basin is located in an extensive forested area occupied by sands, forming a valley characterized by the existence of a large number of short-distance water courses. Upon arriving at an abrupt area dominated by calcarenite near Corres, the valley is encased in the Corres ravine, a beautiful gorge located between the Soila mountains (990 m) and the Muela (1056 m) that opens up to reach a wide alluvial plain at its convergence with the Berrón River. At that point its average annual flow is 610 L/s. In the summer, the dry season can be very marked, suffering strong drops in continuous dry periods, becoming dull in some sections. Regarding hydraulic uses, it is worth highlighting the hydraulic infrastructure installed in the Izki River ravine which consists of a dam (Aranbaltza dam) from which a surface channel starts that transports an average of 200-300 L/s. Another similar channel starts from the Berrón river, north of the town of Atauri. Both canals join in a surface deposit located near Bujanda, whose altitude (with an elevation difference of about 70m) is used by a small hydroelectric plant in Antoñana, built in 1905 and which was put into operation again in 2014.

Bibliography
  • https://es.wikipedia.org/wiki/R%C3%ADo_Izki
  • Gobierno Vasco (2001). Mapa Hidrológico de la Comunidad autónoma del País Vasco.
  • II PRUG del parque natural de Izki. Estudio Diagnóstico. DFA-AFA octubre 2009
  • ORDEN FORAL 880/2004, de 27 de octubre, por la que se aprueba el Plan de Gestión de la Nutria Lutra lutra (Linnaeus, 1758)en el Territorio Histórico de Álava

Izki Categoría:Afluentes del Ega


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