Case study:Restoration of Koskenkylänjoki River

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Location: 60° 29' 28.00" N, 25° 56' 28.60" E

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Project overview

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Status	Complete
Project web site
Themes	Fisheries, Habitat and biodiversity
Country	Finland
Main contact forename	Pasi
Main contact surname	Lempinen
Main contact user ID
Contact organisation	Centre for Economic Development, Transport and the Environment
Contact organisation web site
Partner organisations
This is a parent project encompassing the following projects	Kuuskoski-Fishway

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Project summary

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The Koskenkylänjoki River is located in south-east of Finland and it runs into The Gulf of Finland. The River has been restored since 2006. Restorations were done as the aim of improving the River for mitigating fish by constructing nature-like fishways and creating breeding habitats by adding stone and grave material into the river bed.

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Catchment and subcatchment

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Catchment

River basin district	Koskenkylänjoki River Basin
River basin

Subcatchment

River name	Koskenkylänjoki River
Area category	100 - 1000 km²
Area (km2)	895 km²89,500 ha <br />
Maximum altitude category
Maximum altitude (m)
Dominant geology	Organic
Ecoregion	Fenno-Scandian Shield
Dominant land cover
Waterbody ID

Site

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Name	Catchment of Koskenkylänjoki River
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body	No
National/international site designation
Local/regional site designations
Protected species present	No
Invasive species present	No
Species of interest
Dominant hydrology
Dominant substrate	Peat
River corridor land use	Intensive agriculture (arable)
Average bankfull channel width category
Average bankfull channel width (m)
Average bankfull channel depth category
Average bankfull channel depth (m)
Mean discharge category
Mean annual discharge (m3/s)
Average channel gradient category
Average channel gradient
Average unit stream power (W/m2)

Project background

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Reach length directly affected (m)
Project started	2006/01/01
Works started
Works completed	2012/01/01
Project completed
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Total cost (k€)
Benefit to cost ratio
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Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
Investigation and design
Stakeholder engagement and communication
Works and works supervision
Post-project management and maintenance
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Reasons for river restoration

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Mitigation of a pressure
Hydromorphology
Biology	Fish: Abundance
Physico-chemical
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Measures

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Structural measures
Bank/bed modifications	Building fishways
Floodplain / River corridor
Planform / Channel pattern
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Non-structural measures
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Monitoring

Hydromorphological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
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Biological quality elements

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quality elements

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Physico-chemical quality elements

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Any other monitoring, e.g. social, economic

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Additional links and references

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Supplementary Information

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