]> 2026-04-28T12:51:48+00:00 Case study:Restoration of Vantaanjoki River 500 en Approved ,,,,,, Centre for Economic Development, Transport and the Environment for Uusimaa Fenno-Scandian Shield No Yes Yes false ,,,,,, Restoration of Vantaanjoki River after restoration (photo Olli Toivonen).jpg Restoration of Vantaanjoki River Restoration by hand (photo Olli Toivonen).jpg Restoration of Vantaanjoki River Gravel (photo Olli Toivonen).jpg Vantaanjoki River after restoration (photo: Olli Toivonen). Vantaanjoki River Restoration by hand (photo: Olli Toivonen) Vantaanjoki River_Gravel (photo: Olli Toivonen) No 60.2685433,24.9598178 Kai Centre for Economic Development, Transport and the Environment for Uusimaa Samanen ,, ,,, ,,,,,, 1086 ,,,,,, After restoration (photo: Olli Toivonen) Restoration of Vantaanjoki River after restoration (photo Olli Toivonen).jpg Complete River Vantaanjoki flows to the Baltic Sea in Helsinki city. The river was famous for its salmon from medieval times but through dam construction and later through bad water quality the original stock became extinct. Through new sewage treatment systems the water was purified in the 1980's. Later multiple restorations have been done in River Vantaanjoki and its tributaries with the aim to enable fish migration from sea to upstream by removing dams, constructing fish passes and adding stone material and gravel to create habitats. Object of the restorations have also been to improve the condition of the water system in such a way that it would be better suited to meet the needs of recreation and fishing. After restorations salmon and sea trout, both highly threatened species in the Baltic Sea, begun to migrate and reproduce to the river. Restorations were accomplished in co-operation with environmental authorities, NGOs and volunteers. Co-operation between different organizations was a success and interests of different groups were well taken into account during projects. Restoration of Vantaanjoki River restoration of vantaanjoki river No Vantaanjoki River Basin Vantaanjoki River vantaanjoki river Cathment of Vantaanjoki River cathment of vantaanjoki river 1271 1000 - 10000 km² Porvoonjoki River Habitat and biodiversity 2012-08-10T14:00:17Z 2456150.0835301 2013-09-30T10:03:13Z 2456565.9189005 Restoration of Vantaanjoki River 500 1 plainlist 5 [[Category:Case study]] [[Project title::!Restoration of Vantaanjoki River]] [[Subcatchment title::Porvoonjoki River]] Restoration of Vantaanjoki River# QUERY473abc37a76de2b458b50523a7eb5152 500 1 list 3 [[Category:Case study]] [[Parent project::Case study:Restoration of Vantaanjoki River]] Restoration of Vantaanjoki River# QUERY3097727bc4685d2d9947e8a152c7869b