Mandalselva

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Mandalselva
Mandalselva at Mandal

Mandalselva at Mandal

Data
Water code NO : 022.Z
location Agder ( Norway )
River system Mandalselva
Drain over Mandalselva → North Sea
origin Lake discharge Øre
58 ° 32 ′ 50 ″  N , 7 ° 23 ′ 28 ″  E
Source height 260  m
muzzle at Mandal in the North Sea coordinates: 58 ° 1 ′ 10 ″  N , 7 ° 27 ′ 21 ″  E 58 ° 1 ′ 10 ″  N , 7 ° 27 ′ 21 ″  E
Mouth height 0  m
Height difference 260 m
Bottom slope 2.3 ‰
length 115 km  (total length with source rivers)
Catchment area 1880 km²
Drain MQ
 85 m³ / s
Left tributaries Kosåna
Flowing lakes Øre , Mannflåvatnet
Small towns Mandal
Mandalselva near Buøy

The Mandalselva is a river in Fylke Agder in southern Norway . It forms the outflow of Lake Øre , flows south and flows into the North Sea at Mandal . The total length with source rivers is 115 km.

The river flows through the municipalities of Åseral , Lyngdal and Lindesnes . The largest tributaries are Monn , Logna , Skjerka , Kosåna , Logåna and Røyselandsbekken . Skjerka, Monn and Logna flow into Lake Øre. The catchment area covers 1,880 km². The mean discharge of the Mandalselva is 85 m³ / s. In October 1987, at 675 m³ / s, there was the largest discharge volume in the recent past.

Use of hydropower

The use of hydropower on a larger scale began in 1930. Today there are six larger hydropower plants in the catchment area:

Surname completion
position		 Power
in MW		 Annual
output
in GWh		 Fall height
in m		 operator
Logna power sales 1960 19th 100 154 Agder Energi
Smeland power sales 1985 24 112 95 Agder Energi
Skjerka power sales 1997 98 570 346 Agder Energi
Håverstad Kraftverk 1957 44 245 82 Agder Energi
Bjelland power sales 1947 53 294 87 Agder Energi
Laudal power sales 1981 26th 144 36 Agder Energi

fauna

The original salmon population was wiped out as a result of the acidification of the river system . But an extensive addition of lime has led to better environmental conditions in the river, so that new salmon stocks could be built up.

Salmon and sea ​​trout can swim up the river to Kavfossen north of Bjelland - a river stretch of 48 km. Salmon can also hike a little up the tributary Kosåna.

In 2006, 11.9 t of salmon and 675 kg of sea trout were caught in the Mandalselva. This is a new fishing record in recent times. The largest salmon weighed 13.9 kg. The river became the sixth best salmon water in Norway in 2006 after adding lime to the river in 1997.

Web links

Commons : Mandalselva  - collection of images, videos and audio files

Individual evidence

  1. ↑ NVE: Flomsonekartprosjektet Flomberegning for Mandalselva (022.Z) ( Memento of the original from July 12, 2011 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. @1@ 2Template: Webachiv / IABot / www.nve.no
  2. ↑ Statistisk sentralbyrå

Web links