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The Kemijoki in Rovaniemi

The Kemijoki in Rovaniemi

Water code FI : 65
location Lapland ( Finland )
River system Kemijoki
source Kemihaara (confluence of Naltiohaara , Keskihaara and Kemihaara ) near Savukoski
67 ° 57 ′ 46 ″  N , 28 ° 57 ′ 9 ″  E
Source height 230  m
muzzle near Kemi in the Bottenwiek , Baltic Sea Coordinates: 65 ° 46 ′ 0 ″  N , 24 ° 27 ′ 0 ″  E 65 ° 46 ′ 0 ″  N , 24 ° 27 ′ 0 ″  E
Mouth height m
Height difference 230 m
Bottom slope 0.42 ‰
length 550 km
Catchment area 51,127.3 km²
Drain MQ
556 m³ / s
Left tributaries Tenniöjoki , Vuotos
Right tributaries Kitinen , Ounasjoki , Raudanjoki
Flowing lakes Kemijärvi
Big cities Kemijärvi , Rovaniemi , Kemi

The Kemijoki [ ˈkɛmijɔki ] is the longest river in Finland at 550 kilometers . It flows through the Finnish part of Lapland and flows into the Baltic Sea .

The Kemijoki begins at the Kemihaara confluence of the three source rivers Naltiohaara , Keskihaara and Kemihaara in the municipality of Savukoski in Eastern Lapland . From there it flows in a south-westerly direction through the Lapland landscape, receiving several tributaries. At Savukoski the Tenniöjoki flows into the Kemijoki. At Pelkosenniemi , the Kemijoki takes on the Vuotos and the Kitinen , who recently united with the Luiro . In the town of Kemijärvi, the river flows through Lake Kemijärvi . At the confluence of the Kemijoki and its largest tributary, the Ounasjoki , lies the Lappish provincial capital of Rovaniemi . At the port city of Kemi , the Kemijoki flows into the Bottenwiek , the northernmost part of the Gulf of Bothnia . The size of the catchment area is 51,127 square kilometers and thus covers most of Finnish Lapland. A smaller part of the catchment area is on the Russian and Norwegian side. Especially on its lower reaches, the Kemijoki is very wide and partly widened like a lake. The mean flow rate at the river mouth is 556 m³ / s.

After the end of the Second World War , the previously natural Kemijoki was dammed for the purposes of hydropower . The first hydropower plant on Kemijoki was commissioned near Isohaara in 1948 . Meanwhile, a total of 18 power plants are distributed along the river, 16 of which belong to Kemijoki Oy , which was founded in 1954 . 34.5% of the energy produced by hydropower plants in Finland comes from these power plants, which in 2003 had a total output of 4.3  TWh . The Luiro and Kitinen tributaries to the Lokka and Porttipahta reservoirs were dammed in order to be able to regulate the amount of water for hydropower purposes . Before the construction of the hydropower plants, the Kemijoki was an extremely rich river; especially the salmon appeared in large schools.

Web links

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

Individual evidence

  1. Finnish Ministry of the Environment - Suomen päävesistöalueet -taulukko ( Memento of the original from December 4, 2012 in the web archive ) Info: The archive link has been 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 /