]> 2026-04-17T23:36:54+00:00 Case study:Restoration of Grobruelva 500 en Approved Less than 0.5 m 0.001 - 0.01 2 - 5 m Installation of gravel habitat (gravel and stones) Vannområde Indre Oslofjord Vest Land owners municipality and Norwegian Environmental Agency Yes No Yes false Grobruelva.jpg No Ingvild Tandberg Vannområdet Indre Oslofjord Vest Vannområdet Indre Oslofjord Vest Vannområdet Indre Oslofjord Vest; For some measures: Lierskogen Vel, Lier municipality and Buskerud JFF 59.818737807261,10.337757078153 Ingvild Vannområde Indre Oslofjord Vest Tandberg Removal of litter (especially car tires) 1 - 10 m³/s Installation of gravel habitat (gravel and stones),Removal of retainment structure (Rotubekken), improvement of fish migration (at Sagvollfossen), New pipe for sewage runoff along a side beck of Grobruelva,Removal of litter (especially car tires),, Ingvild Tandberg New pipe for sewage runoff along a side beck of Grobruelva 25318 Ingvild Tandberg Vannområdet Indre Oslofjord Vest 2017-08-01Z 2457966.5 In progress This project aimes to improve the habitat conditions of fast-growing sea trout (salmo trutta) in the Grobruelva river in the Lier municipality (Viken). They are impaired by re-routing of side arms, regulation of the main channel and pollution (roads and agriculture). First measures to counter pollution have been implemented (new pipe for sewage runoff). Habitat improving measures are planned, but have not been conducted yet. More information is expected soon and will be updated. Restoration of Grobruelva restoration of grobruelva No Removal of retainment structure (Rotubekken) improvement of fish migration (at Sagvollfossen) Grobruelva grobruelva Ingvild Tandberg Vannområdet Indre Oslofjord Vest Fisheries Habitat and biodiversity Land use management - agriculture Water quality Urban 350 100 - 500 k€ 009-170-R Åro watercourse Ingvild Tandberg 100 - 500 k€ Vannområdet Indre Oslofjord Vest; For some measures: Lierskogen Vel, Lier municipality and Buskerud JFF 2020-01-14T06:12:12Z 2458862.7584722 2021-02-17T09:36:37Z 2459262.9004282 Restoration of Grobruelva