Case study:Kuuskoski-Fishway

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Location: 60° 29' 58.74" N, 25° 56' 32.30" E

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Project overview

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Status	Complete
Project web site	http://www.ymparisto.fi/default.asp?contentid=202755
Themes	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
Parent multi-site project	Case_study:Restoration of Koskenkylänjoki River
This is a parent project encompassing the following projects	No

Kuuskoski Torrent fishway (photo:Pasi Lempinen)

Project summary

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Construction of Kuuskoski fishway was part of the Koskenkylänjoki River restoration project. In 20th century Koskenkylänjoki River was known for its sea trout population. Dams made it impossible for the migrants to rise up in the stream and population density of sea trout decreased radically. In 2008 the regional ELY-centre (environmental authority) launched a project during which a bypass for the migrants was built. The aim of the restoration was to promote the natural breeding of migratory whitefish, salmon and sea trout. The project was managed by Centre for Economic Development, Transport and the Environment for Uusimaa (environmental authority) and financed by The European Fisheries Fund (EFF) and the state of Finland.

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Catchment and subcatchment

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Catchment

River basin district
River basin	Koskenkylänjoki River BAsin

Subcatchment

River name	Kuuskoski Torrent
Area category
Area (km2)
Maximum altitude category
Maximum altitude (m)
Dominant geology	Organic (i.e. Peat)
Ecoregion	Fenno-Scandian Shield
Dominant land cover	Intensive agriculture (arable)
Waterbody ID

Site

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Name	Kuuskoski Torrent
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body
National/international site designation
Local/regional site designations
Protected species present
Invasive species present
Species of interest
Dominant hydrology
Dominant substrate
River corridor land use
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	2008/01/01
Works started
Works completed
Project completed
Total cost category	100 - 500 k€
Total cost (k€)	202 k€202,000 € <br />
Benefit to cost ratio
Funding sources	EU, State

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
Monitoring

Reasons for river restoration

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Mitigation of a pressure
Hydromorphology
Biology	Fish
Physico-chemical
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Measures

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Structural measures
Bank/bed modifications	Building fishway, Introducing gravel, Building of submerged weirs and pits, Introducing stones
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
	Before measures	After measures	Qualitative	Quantitative

Biological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative
Fish						Awaiting results
Fish						Awaiting results

Physico-chemical quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
	Before measures	After measures	Qualitative	Quantitative

Any other monitoring, e.g. social, economic

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	Before measures	After measures	Qualitative	Quantitative

Monitoring documents

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Image gallery

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Additional links and references

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Link	Description

Supplementary Information

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