]> 2026-04-20T06:53:18+00:00 Case study:Habitat improvement measures in Bortneelva 500 en Plan of measures Report Website Vannportalen Website on research in river Eidselva News article Approved Deflectors Creation of fish passes Removal of fish barriers Creation of pools Creation of fish refuge areas introduction of blocks Big rocks are placed in the stream Creation of low flow channel Yes Yes No Inconclusive No Fish,Yes,Yes,No,No,No,Inconclusive Fish No SFE Produksjon AS Svelgen Kraft AS The Norwegian Public Roads Administration County Governor of Vestland Sub-district (Vannområde) Nordfjord /Bremanger municipality Uni Research Miljø LFI Rådgivende Biologer AS Svelgen Kraft AS The Norwegian Public Roads Administration and Sub-district Nordfjord /Bremanger municipality Yes No Yes false No Results so far: Fish studies were conducted in 2018 by Rådgivende Biologer AS. Due to general low densities of juvenile fish in 2018, there were not enough data to say anything conclusive about the effects of the measures conducted in the river (Irgens, C. & Hellen, B.A. 2019. Fiskebiologiske undersøkelser i Bortneelva i 2018. Rådgivende Biologer AS, rapport 2910, 16 sider, ISBN 978-82-8308-63 3-1). 61.847066036965,5.3938993951002 Vegard SFE Produksjon AS Fagerli 2.1 Deflectors, Creation of fish passes, Removal of fish barriers, Creation of pools, Creation of fish refuge areas, introduction of blocks, Big rocks are placed in the stream, Creation of low flow channel,,Improving fish migration,, ,,, https://www.radgivende-biologer.no/wp-content/uploads/2019/10/2910.pdf https://docplayer.me/50826638-Habitatkartlegging-i-bortneelva-bremanger-kommune.html 25119 Svelgen Kraft AS, The Norwegian Public Roads Administration, County Governor of Vestland, Sub-district (Vannområde) Nordfjord /Bremanger municipality, Uni Research Miljø LFI, Rådgivende Biologer AS 2017-01-01Z 2457754.5 Bortneelva.png 2014-01-01Z 2456658.5 Complete Svelgen Kraft (SK) use about 7% of the water that flows naturally in the Bortne-river for power production at the Svelgen I power plant. The measures carried out in the river were planned to mitigate the impacts of the power production and to enhance the growing and living conditions of anadromous fish in the river. Mapping and improvement works were prioritized. This was driven by many factors and stakeholders, including landowners, the County Governor's environmental protection department, the EU's water framework directive and SK themselves. The renewal of the concessions for the Svelgen I and II power plants were in review and SK's goal is to practice environmentally sound water management. The survey was carried out by Uni Research Miljø LFI in 2016. Habitat conditions in the river were described and possible measures were suggested to improve the fish's growing and living conditions. After clarification with landowners, other operators in the river and the relevant authorities, the physical work was carried out in autumn/winter 2016-17 by Machine3prenør1. Different types of measures were carried out over an approximately 2 km long stretch of river. The following measures were done: • Removal of migration barriers by building a “fish passage” with two ponds. • Construction of flow deflectors to concentrate the stream of water in the river, which gives the fish easier migration paths in the case of low water levels. • Laying of stone blocks and boulders in clusters to improve the fish's ability to hide. • Digging of ditches and opening of a natural "fish tunnels" to drain water to migration paths at low water levels. Habitat improvement measures in Bortneelva habitat improvement measures in bortneelva http://www.vannportalen.no/vannregioner/sogn--og-fjordane/vassomrade/nordfjord/nyhende-nordfjord/2017/miljotiltak-i-bortneelva/ Yes 2000 Improving fish migration Bortneelva bortneelva Salmon and Sea-trout Environmental flows and water resources Habitat and biodiversity Hydropower Hydromorphology Monitoring RWH1211 086-141-R and 086-139-R Bortneelva og Bortneelva, nedre del 2019-11-27T15:25:27Z 2458815.1426736 2020-02-25T09:15:40Z 2458904.8858796 Habitat improvement measures in Bortneelva