Case study:Kvarnekulla nature like bypass channel at River Knipån

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Location: 57° 56' 26", 14° 5' 42"
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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

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encompassing the following
projects
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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.

Monitoring surveys and results

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Lessons learnt

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Image gallery


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)
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Catchment and 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

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

Reach length directly affected (m) 570
570 m
0.57 km
57,000 cm
Project started 2003/01/01
Works started
Works completed
Project completed 2008/02/01
Total cost category more than 10000 k€
Total cost (k€) 188 830
188,830 k€
188,830,000 €
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

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


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

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

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

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

Any other monitoring, e.g. social, economic

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


Monitoring documents



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Additional links and references

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Supplementary Information

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