]> 2026-04-11T07:04:34+00:00 Case study:Timber float restorations at River Iijoki 500 en Approved 2 - 5 m more than 0.1 10 - 50 m Building submerged weir Removal of old logs Re-introducing spawning gravel Habitat restoration Removal of revetments Yes Yes No Improvement Inconclusive No Fish: Abundance,Yes,Yes,No,No,No,Improvement Invertebrates,Yes,Yes,No,No,No,Inconclusive Fish: Abundance Invertebrates No Adding sinuosity Centre for Economic Development, Transport and the Environment for North Ostrobothnia Metsähallitus (National Forestry Board) Fenno-Scandian Shield Ministry of Agriculture and Forestry Yes Yes Yes true Yes Improvement Quantity & dynamics of flow,,Yes,,,,Improvement Width & depth variation,,Yes,,,,Improvement Channel pattern/planform,,Yes,,,,Improvement Flow velocities,,Yes,,,,Improvement Structure & condition of riparian zones,,Yes,,,,Improvement Quantity & dynamics of flow Width & depth variation Channel pattern/planform Flow velocities Structure & condition of riparian zones Map of Iijoki catchment.gif Map of Iijoki catchment No Timo Yrjänä Centre for Economic Development, Transport and the Environment Centre for Economic Development, Transport and the Environment Metsähallitus, federal forestry center 65.3246427,25.4280088 Timo Centre for Economic Development, Transport and the Environment for North Ostrobothnia Yrjänä fish stockings Monitoring strategy juridical processes 174 100 - 1000 m³/s Building submerged weir, Removal of old logs, Re-introducing spawning gravel, Habitat restoration, Removal of revetments,Remeandering, Reconnection of drained river sections, Removal of embankments,Adding sinuosity, Rehabilitation of water levels in nearby lakes,fish stockings, Monitoring strategy, juridical processes,, Metsähallitus, federal forestry center Timo Yrjänä ,,,,,, Rehabilitation of water levels in nearby lakes 763 Metsähallitus (National Forestry Board) 1 - 10 k€ 2013-12-31Z 2456657.5 Iijoki.JPG 1988-01-01Z 2447161.5 Complete River Iijoki has been restored mainly because of altered river morphology caused by intensive forestry and timber floating. Besides the main channel of River Iijoki, also all tributaries of this large river area have been restored. The main channel of the river is mainly harnessed for hydro power production and also two tributaries are regulated. Timber float restorations at River Iijoki timber float restorations at river iijoki http://www.ymparisto.fi/default.asp?node=5579&lan=fi No Iijoki River Basin Iijoki River basin Remeandering Reconnection of drained river sections Removal of embankments Iijoki River iijoki river Catchment of River Kostonjoki catchment of river kostonjoki 14191 more than 10000 km² 370 200 - 500 m Kostonjoki River Fisheries Habitat and biodiversity Hydropower Hydromorphology Land use management - forestry 15 10 - 50 k€ Timo Yrjänä 1 - 10 k€ Centre for Economic Development, Transport and the Environment 2011-12-31Z 2455926.5 2012-07-31T17:33:18Z 2456140.2314583 2019-01-02T14:42:53Z 2458486.1131134 Timber float restorations at River Iijoki 500 1 plainlist 5 [[Category:Case study]] [[Project title::!Timber float restorations at River Iijoki]] [[Subcatchment title::Kostonjoki River]] Timber float restorations at River Iijoki# QUERY34b109d1878f0bd258a795832989f479 500 1 list 3 [[Category:Case study]] [[Parent project::Case study:Timber float restorations at River Iijoki]] Timber float restorations at River Iijoki# QUERYd9a8fb9239182c603c4e2ee0ef02b8c7 Case study:Restoration of Kostonjoki River 500 en Restoration of Kostonjoki River Parent project 102 en Parent project