Case study:Apelnäs fishway at River Rolfså: Difference between revisions
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{{Case study status | {{Case study status | ||
|Approval status= | |Approval status=Approved | ||
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{{Location | {{Location | ||
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|Name of parent multi-site project=Case_study:Biologisk återställning i Rolfsåns vattensystem | |Name of parent multi-site project=Case_study:Biologisk återställning i Rolfsåns vattensystem | ||
|Multi-site=No | |Multi-site=No | ||
|Project summary=The Apelnäs powerplant was built in 1940. In 1995 a denil fishway was built and adapted for a minimum amount of water 300 L/s. A fish counter was placed at the upper end of the fishway. It was noticed that fish only migrated downstream, not upstream. The reason was that the fish could not find the fishway and there was still too little amount of water. A pool type fishway was decided to build because it was not possible to build a bypass channel because of steep steepness and rock-bedded bottom. The realisation of the new fishway was 2009. After the finish of the pool-type fishway, the water flow was increased from 300 to 600 L/s for two months annually. In addition, the power plant will every September and October be turned off entirely for 10 hours on one day a week. This will provide an attraction flow for migrating trout during its spawning time. | |Project summary=The Apelnäs powerplant was built in 1940. In 1995 a denil fishway was built and adapted for a minimum amount of water 300 L/s. A fish counter was placed at the upper end of the fishway. It was noticed that fish only migrated downstream, not upstream. The reason was that the fish could not find the fishway and there was still too little amount of water. A pool-type fishway (on left-hand side in the picture) was decided to build because it was not possible to build a bypass channel because of steep steepness and rock-bedded bottom. The realisation of the new fishway was 2009. After the finish of the pool-type fishway, the water flow was increased from 300 to 600 L/s for two months annually. In addition, the power plant will every September and October be turned off entirely for 10 hours on one day a week. This will provide an attraction flow for migrating trout during its spawning time. | ||
To consider the eel, the top of the fishway walls were made slope and a little amount of water was entered to there. The idea was to have moss growing there, since it is excellent climbing material for eels. Also some 50 mm holes were made to the walll of the fishway to help the migrating eels to swim through them. | To consider the eel, the top of the fishway walls were made slope and a little amount of water was entered to there. The idea was to have moss growing there, since it is excellent climbing material for eels. Also some 50 mm holes were made to the walll of the fishway to help the migrating eels to swim through them. | ||
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{{Case study subcatchment | {{Case study subcatchment | ||
|Subcatchment=Rolfsån River | |Subcatchment=Rolfsån River | ||
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|Name=Apelnäs hydropowerplant at river Storån | |Name=Apelnäs hydropowerplant at river Storån | ||
|WFD water body name=River Storån | |WFD water body name=River Storån | ||
|Pre-project morphology=Artificial bed, | |Pre-project morphology=Artificial bed, | ||
|Reference morphology=Pool fishway | |Reference morphology=Pool fishway | ||
|Heavily modified water body= | |Heavily modified water body=No | ||
|Protected species present=No | |Protected species present=No | ||
|Invasive species present=No | |Invasive species present=No | ||
|Dominant hydrology=Artificially regulated, | |Species=Brown trout (Salmo trutta), European eel (Anguilla anguilla), | ||
|Dominant substrate=Bedrock, | |Dominant hydrology=Artificially regulated, | ||
|River corridor land use=Woodland, Intensive agriculture (arable), | |Dominant substrate=Bedrock, | ||
|River corridor land use=Woodland, Intensive agriculture (arable), | |||
|Mean discharge category=1 - 10 m³/s | |||
|Mn discharge=6 | |||
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{{Project background | {{Project background | ||
|Project started=2008 | |Project started=2008 | ||
|Total cost category= | |Project completed=2009/12/31 | ||
|Total1 cost= | |Total cost category=1000 - 5000 k€ | ||
|Total1 cost=1200 | |||
|Supplementary funding information=The building of the fishway cost 1 milj. Swedish crones (ca. 100 000 euros) and the habitat restoration 84 000 Swedish crones (ca. 8400 euros). | |||
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{{Motivations | |||
|Specific mitigation=Mitigation of hydropower and creating more spawning habitats for migrating fish | |||
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{{Measures}} | {{Measures}} | ||
{{Hydromorphological quality elements header}} | {{Hydromorphological quality elements header}} | ||
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{{Monitoring documents}} | {{Monitoring documents}} | ||
{{Monitoring documents end}} | {{Monitoring documents end}} | ||
{{Additional Documents}} | {{Additional Documents}} | ||
{{Additional Documents end}} | {{Additional Documents end}} | ||
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{{Additional links and references footer}} | {{Additional links and references footer}} | ||
{{Supplementary Information}} | {{Supplementary Information}} | ||
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Latest revision as of 06:35, 6 September 2013
Location: 57° 37' 53.75" N, 12° 29' 47.16" E
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Project overview
| Status | Complete |
|---|---|
| Project web site | http://projektwebbar.lansstyrelsen.se/rolfsan/Sv/folj-atgardsarbetet/Pages/Storan_apelnas_kraftverk.aspx |
| Themes | Fisheries, Habitat and biodiversity, Hydropower |
| Country | Sweden |
| Main contact forename | Andreas |
| Main contact surname | Bäckstrand |
| Main contact user ID | User:Arolam |
| Contact organisation | Länsstyrelsen västra Götalands län |
| Contact organisation web site | http://http://projektwebbar.lansstyrelsen.se/rolfsan/Sv/kontakt/Pages/kontakta-oss.aspx |
| Partner organisations | |
| Parent multi-site project | |
| This is a parent project encompassing the following projects |
No |
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Project summary
Edit project overview to modify the project summary.
The Apelnäs powerplant was built in 1940. In 1995 a denil fishway was built and adapted for a minimum amount of water 300 L/s. A fish counter was placed at the upper end of the fishway. It was noticed that fish only migrated downstream, not upstream. The reason was that the fish could not find the fishway and there was still too little amount of water. A pool-type fishway (on left-hand side in the picture) was decided to build because it was not possible to build a bypass channel because of steep steepness and rock-bedded bottom. The realisation of the new fishway was 2009. After the finish of the pool-type fishway, the water flow was increased from 300 to 600 L/s for two months annually. In addition, the power plant will every September and October be turned off entirely for 10 hours on one day a week. This will provide an attraction flow for migrating trout during its spawning time.
To consider the eel, the top of the fishway walls were made slope and a little amount of water was entered to there. The idea was to have moss growing there, since it is excellent climbing material for eels. Also some 50 mm holes were made to the walll of the fishway to help the migrating eels to swim through them.
Monitoring surveys and results
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Lessons learnt
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Catchment and subcatchmentSelect a catchment/subcatchment
Catchment
Subcatchment
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
Project background
Cost for project phases
Supplementary funding informationThe building of the fishway cost 1 milj. Swedish crones (ca. 100 000 euros) and the habitat restoration 84 000 Swedish crones (ca. 8400 euros).
Reasons for river restoration
Measures
MonitoringHydromorphological quality elements
Biological quality elements
Physico-chemical quality elements
Any other monitoring, e.g. social, economic
Monitoring documents
Additional documents and videos
Additional links and references
Supplementary InformationEdit Supplementary Information
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