Otra
Otra | |
---|---|
View of the river Otra running through the city of Kristiansand, where it is also called Torridalselva or Torridalselven | |
Location of the river mouth Otra (Aust-Agder) Otra (Norway) | |
Other name(s) | Torridalselva, Torridalselven |
Country | Norway |
Counties | Aust-Agder, Vest-Agder |
Municipalities | Bykle, Valle, Bygland, Evje og Hornnes, Iveland, Vennesla, Kristiansand |
Physical characteristics | |
Main source |
Setesdalsheiene, Bykle, Norway 896 metres (2,940 ft) 59°37′42″N 7°25′56″E / 59.6284°N 07.4321°E |
River mouth |
Skagerrak, Kristiansand, Norway 0 metres (0 ft) 58°08′36″N 8°00′48″E / 58.1434°N 08.0134°ECoordinates: 58°08′36″N 8°00′48″E / 58.1434°N 08.0134°E |
Length | 245 km (152 mi) |
Discharge |
|
Basin features | |
River system | Otra |
Basin size | 3,752 km2 (1,449 sq mi) |
The Otra is the largest river in the Sørlandet region of Norway. It begins in Setesdalsheiene mountains at the lake Breidvatnet in Bykle municipality in Aust-Agder county, just south of the border with Vinje municipality in Telemark county. The river then flows south through Bykle, Valle, Bygland, Evje og Hornnes, and Iveland municipalities in Aust-Agder before passing into Vest-Agder county and flowing through Vennesla and Kristiansand municipalities. The river empties into the Skagerrak in the center of the city of Kristiansand on the southern coast of Norway.
The Otra is 245 kilometres (152 mi) long, making it Norway's eighth-longest river in Norway. There are many large lakes along the river including: Åraksfjorden, Byglandsfjorden, Hartevatnet, and Kilefjorden. There are 12 hydroelectric power plants built along the river, which produce much of the electricity for the southern part of Norway.[1]
The salmon do well in the Otra river because the water is not too acidic. The calcareous rocks in the catchment area at the northern end of the Setesdal valley give the water a certain buffer capacity against acidification.[2]
References
- ↑ "Otra" (in Norwegian). Store norske leksikon. Retrieved 2010-05-16.
- ↑ "Mindre forurensning og mer laks i Otra" (in Norwegian). Dirna.no.
External links
Media related to Otra at Wikimedia Commons