Case study:Restoration of Naarkoski Torrent

This case study is pending approval by a RiverWiki administrator.

Approve case study

 

0.00

(0 votes)

To discuss or comment on this case study, please use the discussion page.

Location: 60° 38' 30.99" N, 25° 35' 17.96" E

Edit location

Loading map...

{"format":"googlemaps3","type":"HYBRID","minzoom":false,"maxzoom":false,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"limit":50,"offset":0,"link":"all","sort":[""],"order":[],"headers":"show","mainlabel":"","intro":"","outro":"","searchlabel":"... further results","default":"","import-annotation":false,"width":"auto","height":"400px","centre":false,"title":"","label":"","icon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":14,"layers":[],"controls":["pan","zoom","type","scale","streetview","rotate"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"resizable":false,"kmlrezoom":false,"poi":true,"cluster":false,"clustergridsize":60,"clustermaxzoom":20,"clusterzoomonclick":true,"clusteraveragecenter":true,"clusterminsize":2,"imageoverlays":[],"kml":[],"gkml":[""],"searchmarkers":"","fullscreen":false,"scrollwheelzoom":false,"showtitle":false,"hidenamespace":true,"template":"Location map popup","userparam":"","activeicon":"","pagelabel":false,"ajaxcoordproperty":"","ajaxquery":"","locations":[{"text":"\u003Cp\u003E\u003Cbr /\u003E\n\u003C/p\u003E\u003Cp\u003E\u003Cb\u003EProject Title:\u003C/b\u003E Restoration of Naarkoski Torrent\n\u003C/p\u003E\u003Cp\u003E\u003Cb\u003ECountry:\u003C/b\u003E \u003Ca href=\"/wiki/index.php?title=Finland\" title=\"Finland\"\u003EFinland\u003C/a\u003E\n\u003C/p\u003E\u003Cp\u003E\u003Cb\u003EProject Status:\u003C/b\u003E Complete\n\u003C/p\u003E\u003Cp\u003E\u003Cb\u003EThemes:\u003C/b\u003E Habitat and biodiversity\n\u003C/p\u003E\u003Cp\u003E\u003Cbr /\u003E\n\u003C/p\u003E","title":"Restoration of Naarkoski Torrent","link":"","lat":60.641940869531,"lon":25.588323025626,"icon":"/wiki/images/a/af/Red_marker.png"}]}

Left click to look around in the map, and use the wheel of your mouse to zoom in and out.

Project overview

Edit project overview

Status	Complete
Project web site
Themes	Habitat and biodiversity
Country	Finland
Main contact forename	Kari
Main contact surname	Rantakokko
Main contact user ID
Contact organisation	SYKE
Contact organisation web site
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

Naarkoski Torrent after restoration

Project summary

Edit project overview to modify the project summary.

Naarkoski torrent in the River Porvoonjoki is situated near the Pukkila city center. A fishway was constructed to enable the migrating fish to pass the Naarkoski power plant and open the way for fish to the upper reaches of the stream. Constructions of the bypass channel was started in October 2002 and finished in june 2003. Project was executed and managed in co-operation with the municipality of Pukkila and and Environmental Institute for Uusimaa. Cost of the restoration was 160 000 euros and it was financed by municipality of Pukkila, Environment Centre for Uusimaa and European Regional Development Fund, among the others.

Monitoring surveys and results

This case study hasn’t got any Monitoring survey and results, you can add some by editing the project overview.

Lessons learnt

This case study hasn’t got any lessons learnt, you can add some by editing the project overview.

Catchment and subcatchment

Select a catchment/subcatchment

Edit the catchment and subcatchment details
(affects all case studies in this subcatchment)

Catchment

River basin district	Porvoonjoki River Basin
River basin

Subcatchment

River name	Naarkoski Torrent
Area category
Area (km2)
Maximum altitude category
Maximum altitude (m)
Dominant geology
Ecoregion	Fenno-Scandian Shield
Dominant land cover	Intensive agriculture (arable)
Waterbody ID

Site

Edit site

Name	Naarkoski Torrent-fishway
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology	Ponded
Reference morphology	Step-pool
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	Ephemeral
Dominant substrate
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

Edit project background

Reach length directly affected (m)
Project started	2002/01/01
Works started
Works completed	2003/01/01
Project completed
Total cost category	100 - 500 k€
Total cost (k€)	160 k€160,000 € <br />
Benefit to cost ratio
Funding sources	SYKE, European Regional Development Fund (ERDF), Municipality of Pukkila, Regional ELY-centre, Uusimaa Regional Council

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

Edit reasons for restoration

Mitigation of a pressure
Hydromorphology
Biology	Fish
Physico-chemical
Other reasons for the project

Measures

Edit Measures

Structural measures
Bank/bed modifications	Building fishway, Introducing gravel, Building of submerged weirs and pits, Introducing stones
Floodplain / River corridor
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other

Monitoring

Hydromorphological quality elements

Edit Hydromorphological
quality elements

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

Biological quality elements

Edit biological
quality elements

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

Physico-chemical quality elements

Edit Physico-chemical
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

Edit Other responses

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

Monitoring documents

Upload monitoring documents

Image gallery

Edit Image gallery

Restoration of Naarkoski Torrent_bypass construction

Additional documents and videos

Upload additional documents

Additional links and references

Edit links and references

Link	Description

Supplementary Information

Edit Supplementary Information