Nidelva (Aust-Agder)

This article is about the river in Aust-Agder, Norway. For the river which runs through Trondheim, see Nidelva.

Nidelva (Aust-Agder)
Nidelva near Blakstad in Froland
Basin
Main source	Haugsjåsund, Telemark
River mouth	Arendal, Aust-Agder
Size	4,000 km² (1,500 sq mi)
Country	Norway
Physiognomy
Length	210 km (130 mi)

Nidelva in Aust-Agder is the main river in the Arendal drainage basin. It is formed by the confluence of two rivers, Nisserelva and Fyreselv. The river flows into the Skagerrak at Arendal. The total length of the system is 210 kilometres (130 mi), the watershed covers 4,000 square kilometres (1,500 sq mi). Sixteen hydro-electric power stations are built along the river, making this one of Norway's most controlled drainage systems.

Salmon can be found 22 kilometres (14 mi) up the river, where the Evenstad power station is located. At Rygene, the average waterflow is 110 cubic meters per second (m³/s), but the highest recorded was in the autumn of 1987, with 1200 m³/s.

Gallery

View of the River Nid by John William Edy

References

Wikimedia Commons has media related to Nidelva, Aust-Agder.

Energilink.no entry on Evenstad power station (Norwegian)
Comparing upriver spawning migration of Atlantic salmon Salmo salar and sea trout Salmo trutta A.G Finstad, F. Økland, E.B. Thorstad, T.G. Heggberget, Journal of Fish Biology, 2005

Coordinates: 58°24′59″N 8°44′25″E / 58.4165°N 8.7403°E / 58.4165; 8.7403

This article is issued from Wikipedia - version of the Saturday, July 05, 2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.