Leitzaran
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Leitzaran | |
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Origin | Leitza |
Mouth | River Oria |
Basin countries | Spain |
Length | 42 km |
Source elevation | ~600 m |
Mouth elevation | 92 m |
Avg. discharge | 2,88 m³/s |
Basin area | 124,02 km² |
The Leitzaran (or Leizaran) is a river in the Basque Country. It flows into the river Oria from its right.
Its source is in the Leitza municipalty in Navarre, and is 42 km long. It enters into Guipuscoa in a place called Urto. It takes water from the municipalties of Areso, Berastegi, Elduain, Villabona, Urnieta and Andoain and has 12.402 ha, of which 6972 belong to Guipuscoa.
The gipuscoan part of its basin is known as "Valle del Leizaran" (Leizaran Valley), and it mostly shapes up in the "Macizo de Cinco Villas", formed by materials fromed in the Paleozoic (concretely in the Carboniferous), mostly slate and sandstone, fold during the Hercynian orogeny. The Leitzaran is very crooked and shows several meanders.
The gipuscoan Leitzaran limits in the east with river Urumea’s valley, dividead by the Adarran-Mandoegi mountain chain. Altzadi in this chain treads into the valley and separates de gipuscoan and the navarre Leitzaran. The divisive line in the west starts in Arizmendi and joins Uzturre-Ipuliño chain later, in Belabieta. This mountains separate the valley from Zelai and Elduain, as well as the small valleys in the area of Amasa-Villabona.
The shorelines of the Leitzaran and the ones of its affluents Ubaran (Ubane) and Malo have been declarated Protected Biotope on the 29th of September, 1995. They have a total of 74 ha. Despite of its apparent deshumanised appearance, men’s trace is strong. There are plenty of prehistoric monuments (especially in its borders) and grazing has been long-practiced (as shown by the "seles" presence), but the most significant one is the usefulness given to the river by the blast furnaces. Mineral was from the valley itself, but there was some imported from Somorrostro. The river’s waters have moved flour watermills and small hidroelectric power stations as well, some of them still functioning.
In order to carry the mineral from the Bizkotx mines a railway from the mines (located near the place known as Plazaola) to Andoain. Afterwards, its two ends were lengthen to Pamplona and to Lasarte, place where it joined up the Ferrocarriles Vascongados (Basque Railways), where it could provide service to Donostia. This railway (Pamplona - San Sebastián or PSS) was popularly called "Tren del Plazaola" (Plazaola’s Train in Spanish) and "Tren-txiki" (Little Train in Basque).
Nowadays, a big part of the railway’s course is being recovered for leisure, the Vía Verde del Plazaola (Plazaola’s Green Way).