Case study:Apelnäs fishway at River Rolfså: Difference between revisions
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|Project summary=The Apelnäs powerplant was built in 1940. In 1995 denil fishway was constructed and dam removed. Only few fish passed the fishway because of the low flow which wasn´t enough to attract fish espesially to migrate downstreams. In 2009 construction of the new pool riffle fishway was ready and fish were able to migrate up and downstream. | |Project summary=The Apelnäs powerplant was built in 1940. In 1995 denil fishway was constructed and dam removed. Only few fish passed the fishway because of the low flow which wasn´t enough to attract fish espesially to migrate downstreams. In 2009 construction of the new pool riffle fishway was ready and fish were able to migrate up and downstream. | ||
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{{Case study subcatchment}} | {{Case study subcatchment | ||
|Subcatchment=Rolfsån River | |||
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{{Site}} | {{Site}} | ||
{{Project background}} | {{Project background}} |
Revision as of 11:29, 13 November 2012
This case study is pending approval by a RiverWiki administrator.
Project overview
Status | Complete |
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Project web site | |
Themes | Fisheries, Habitat and biodiversity, Hydropower |
Country | Sweden |
Main contact forename | Andreas |
Main contact surname | Bäckstrand |
Main contact user ID | |
Contact organisation | Länsstyrelsen västra Götalands län |
Contact organisation web site | http://projektwebbar.lansstyrelsen.se/rolfsan/Sv/folj-atgardsarbetet/Pages/Storan apelnas kraftverk.aspx |
Partner organisations | |
Parent multi-site project | |
This is a parent project encompassing the following projects |
No |
Project summary
The Apelnäs powerplant was built in 1940. In 1995 denil fishway was constructed and dam removed. Only few fish passed the fishway because of the low flow which wasn´t enough to attract fish espesially to migrate downstreams. In 2009 construction of the new pool riffle fishway was ready and fish were able to migrate up and downstream.
Monitoring surveys and results
Lessons learnt
Catchment and subcatchment
Edit the catchment and subcatchment details
(affects all case studies in this subcatchment)
Catchment
River basin district | Skagerrak and Kattegat River basin |
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River basin | Rolfsån River Basin |
Subcatchment
River name | River Rolfsån |
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Area category | |
Area (km2) | |
Maximum altitude category | |
Maximum altitude (m) | |
Dominant geology | Organic (i.e. Peat) |
Ecoregion | Fenno-Scandian Shield |
Dominant land cover | Woodland, Intensive agriculture (arable) |
Waterbody ID |
Other case studies in this subcatchment: Biologisk återställning i Rolfsåns vattensystem, Bosgården nature-like fishway at River Rolfså, Dam removal at Grönkullen, River Rolfsån, Restorations of River Nolån-Hulta dam removal, ´Restorations of River Nolån-Bypass channel in Hulta Hydro power plant, ´Restorations of River Nolån-Fishway in Forsa hydro power plant, Ålgårda nature-like bypass channel at River Rolfsån
Site
Name | |
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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) | |
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Project started | |
Works started | |
Works completed | |
Project completed | |
Total cost category | |
Total cost (k€) | |
Benefit to cost ratio | |
Funding sources |
Cost for project phases
Phase | cost category | cost exact (k€) | Lead organisation | Contact forename | Contact surname |
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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 | |
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Hydromorphology | |
Biology | |
Physico-chemical | |
Other reasons for the project |
Measures
Structural measures
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Bank/bed modifications | |
Floodplain / River corridor | |
Planform / Channel pattern | |
Other | |
Non-structural measures
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Management interventions | |
Social measures (incl. engagement) | |
Other |
Monitoring
Hydromorphological quality elements
Element | When monitored | Type of monitoring | Control site used | Result | ||
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Before measures | After measures | Qualitative | Quantitative |
Biological quality elements
Element | When monitored | Type of monitoring | Control site used | Result | ||
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Before measures | After measures | Qualitative | Quantitative |
Physico-chemical quality elements
Element | When monitored | Type of monitoring | Control site used | Result | ||
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Before measures | After measures | Qualitative | Quantitative |
Any other monitoring, e.g. social, economic
Element | When monitored | Type of monitoring | Control site used | Result | ||
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Before measures | After measures | Qualitative | Quantitative |
Monitoring documents
Image gallery
Additional documents and videos
Additional links and references
Link | Description |
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Supplementary Information
Edit Supplementary Information