Case study:Kvarnekulla nature like bypass channel at River Knipån

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Location: 57° 56' 26.33" N, 14° 5' 42.28" E

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Project overview

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Status	Complete
Project web site
Themes	Fisheries, Habitat and biodiversity, Hydropower
Country	Sweden
Main contact forename	Ingemar
Main contact surname	Bergbom
Main contact user ID
Contact organisation
Contact organisation web site	http://projektwebbar.lansstyrelsen.se/vattern/Sv/besoksmal-vatterbackar/knipan/Pages/Kvarnekulla.aspx
Partner organisations
Parent multi-site project	Case_study:Restoration of river Knipån
This is a parent project encompassing the following projects	No

Meandering new stream (photo. Maria Arola)

Project summary

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Kvarnekulla has rich industrial history since late 1600 century. Before restorations two dams of the Kvarnekulla mill were the first obsticles for migrating fish from lake Vättern upstreams. The aim of the restoration was to provide nature-like route for fish to migrate upstream without obsticles. 570 meters long Kvarnekulla bypass channel was constructed in 2008 and is so far the longest one in Sweden.

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Image gallery

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Meandering new stream (photo. Maria Arola)

New stream (photo. Maria Arola)

Pool-riffle variation (photo. Outi Laamanen)

Gravel (photo. Maria Arola)

Fish counter (photo. Maria Arola)

Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Habo River basin Knipån Subcatchment River name Knipån Area category Area (km2) Maximum altitude category Maximum altitude (m) Dominant geology Ecoregion Fenno-Scandian Shield Dominant land cover Waterbody ID Other case studies in this subcatchment: Skårhultsdammen bypass channel at River Knipån Site Edit site Name 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 Edit project background Reach length directly affected (m) 570570 m <br />0.57 km <br />57,000 cm <br /> Project started 2003/01/01 Works started Works completed Project completed 2008/02/01 Total cost category more than 10000 k€ Total cost (k€) 188 830188,830 k€ <br />188,830,000 € <br /> Benefit to cost ratio Funding sources 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 Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications 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 Fish: Abundance Yes Yes No Yes No Improvement 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 Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information