In river after river, the rules for Norwegian hydropower change. This applies to 187 watercourses, and 87 of the rivers have salmon. Fifty years ago, the power plants had few or no requirements for water flow. It was decided that the rules could be changed again after fifty years. news has taken a closer look at the 87 rivers that are or have been salmon-bearing. On its migration from the sea to the rivers, wild salmon are threatened by both salmon lice and escaped farmed salmon. When it reaches the students, there may be a new threat: Little water. This has had consequences for the salmon in these rivers: Møre and Romsdal: Salmon are gone: Salmon are reduced, hydropower has played a central role: Tafjord River: Tafjordelva Litledalselva Eira Surna Todals River: Toåa Svorka/Bævra: Bævra Westland: Salmon is gone: Mauranger River : Austrepollelva Salmon is reduced, hydropower has played a central role: Arnafjord and Viksvassdraget: Vikja Aurlandsvassdraget: Aurlandselva Jostedøla: Jostedalselva Jølstra Bøfjordvassdraget: Bøelva Eidsfjordvassdraget: Eio Bergdalsvassdraget: Daleelva Eksingedalsvassdraget: Ekso Teigdalsvassdraget: Teigdalselva, Torfinno, Bolstadelva Vetlelagelvi Trønde : Sørdalselva/Arnevikselva: Arnevikselva Salmon has decreased, hydropower has been of central importance: Teksdal river watercourse: Teksdalselva Mossa Gaulava watercourse: Lundesokna Lake watercourse: Søa Nordland: Salmon are gone: Sagelv and Muskenwatercourse: Muskenelva Sulitjelmwatercourse with Laksåga: Laksåga in Nordalen. The Sørfjord River: Austerdalselva The Blokken River: Blokkelva, Eidelva, Innerdalselva. Salmon have been reduced, hydropower has had a central role: Røssåga: Røssåga, Leirelva, Bjerka Ranassdraget: Ranaelva, Plura, Tverråga Kobbelvassdraget: Kobbelva, Gjerdalselva Storelva on Hinnøy: Storelva Åbjøra opposite Åbjørvatnet. The power company does not agree that the stock of salmon has been reduced. The state administrator in Nordland believes that low water flows negatively affect fish production. Showcase. Rogaland: Salmon are gone: Salmon are reduced, hydropower has had a central importance: Årdalselva Ulla-Førre: Ulla and Førreåna Hellelandsvassdraget: Hellelandsselva Agder: Salmon has decreased, hydropower has had a central importance: Sira-Kvinavassdraget: Kvina Sira-Kvinavassdraget: Åna-Sira Vestfold and Telemark: Salmon has decreased, hydropower has had a central importance: Seljord watercourse: Bøelva Hjartdøla: Heddøla Skiensvassdraget: Skienselva from Klosterfoss Finnmark: Salmon has decreased, hydropower has had a central importance. news has created the overview based on information from the water regions, fisheries managers, from the Salmon Register at the Norwegian Environment Agency, from fact sheets from the National Review for Watercourses and researchers. We have also looked at statistics for the catches for each river at Statistisk Sentralbyrå. And we have seen the latest report from the Scientific Council for Salmon Management for 2021. Here you can check your river. Over several decades, there has been a negative development in the population of salmon in the 449 Norwegian salmon rivers. The wild oxen was redlisted in the Arts data bank last year. The stock of wild salmon has halved since the 1980s. The biggest threats to salmon are assessed to be escaped farmed salmon and salmon lice and infections linked to fish farming. Hydropower and other physical interventions are also major threats that reduce the salmon population. Humpback salmon is a new threat. Acid rain has also reduced the population in some rivers. Of the 449 salmon rivers in Norway, 159 are affected by hydropower. 27 per cent of the waterways are assessed to have the highest degree of impact on salmon. This shows figures news has received from the Norwegian Environment Agency based on the latest report from the Scientific Council for Salmon Management. In other rivers, the impact from hydropower can be far less. On a scale from 0-3, 82 percent of the salmon rivers with hydropower are assessed to have an impact degree of 1 or higher.
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The river Aura is back in full force in Eikesdal due to overflow on Lake Aursjøen – news Møre og Romsdal – Local news, TV and radio
