Case study:Apelnäs fishway at River Rolfså - Revision history

Admin at 06:35, 6 September 2013

2013-09-06T06:35:46Z

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	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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	\|Subcatchment=Rolfsån River		\|Subcatchment=Rolfsån River
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Arolam at 10:53, 24 April 2013

2013-04-24T10:53:21Z

← Older revision		Revision as of 10:53, 24 April 2013
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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=~~Yes~~		\|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
	}}		}}
	{{Project background		{{Project background

Arolam at 10:27, 24 April 2013

2013-04-24T10:27:38Z

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	{{Case study status		{{Case study status
	\|Approval status=~~Draft~~		\|Approval status=Approved
	}}		}}
	{{Location		{{Location

Arolam at 10:27, 24 April 2013

2013-04-24T10:27:07Z

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	{{Project background		{{Project background
	\|Project started=2008		\|Project started=2008
	\|Total cost category=~~100~~ - ~~500~~ k€		\|Project completed=2009/12/31
	\|Total1 cost=~~138~~		\|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).
	}}		}}
	{{Motivations		{{Motivations

Arolam at 10:14, 24 April 2013

2013-04-24T10:14:39Z

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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.

Arolam at 10:09, 24 April 2013

2013-04-24T10:09:13Z

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	\|Total1 cost=138		\|Total1 cost=138
	}}		}}
	{{Motivations}}		{{Motivations
			\|Specific mitigation=Mitigation of hydropower and creating more spawning habitats for migrating fish
			}}
	{{Measures}}		{{Measures}}
	{{Hydromorphological quality elements header}}		{{Hydromorphological quality elements header}}

Arolam at 10:07, 24 April 2013

2013-04-24T10:07:08Z

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	{{Project overview		{{Project overview
	\|Status=Complete		\|Status=Complete
			\|Project web site url=projektwebbar.lansstyrelsen.se/rolfsan/Sv/folj-atgardsarbetet/Pages/Storan_apelnas_kraftverk.aspx
	\|Themes=Fisheries, Habitat and biodiversity, Hydropower		\|Themes=Fisheries, Habitat and biodiversity, Hydropower
	\|Country=Sweden		\|Country=Sweden
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	\|Main contact id=Arolam		\|Main contact id=Arolam
	\|Contact organisation=Länsstyrelsen västra Götalands län		\|Contact organisation=Länsstyrelsen västra Götalands län
	\|Contact organisation url=projektwebbar.lansstyrelsen.se/rolfsan/Sv/~~folj-atgardsarbetet~~/Pages/~~Storan_apelnas_kraftverk~~.aspx		\|Contact organisation url=http://projektwebbar.lansstyrelsen.se/rolfsan/Sv/kontakt/Pages/kontakta-oss.aspx
	\|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
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	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.

	}}		}}
	{{Case study subcatchment		{{Case study subcatchment

Arolam at 11:51, 19 April 2013

2013-04-19T11:51:58Z

← Older revision		Revision as of 11:51, 19 April 2013
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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. 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 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.

	~~In 2009 construction of the new pool riffle fishway was ready and fish were able to migrate up and downstream (fiskväg + biotopvård).~~
	}}		}}
	{{Case study subcatchment		{{Case study subcatchment

Arolam at 11:50, 19 April 2013

2013-04-19T11:50:40Z

← Older revision		Revision as of 11:50, 19 April 2013
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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.		\|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. 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.
	In 2009 construction of the new pool riffle fishway was ready and fish were able to migrate up and downstream (fiskväg + biotopvård).
			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.

			In 2009 construction of the new pool riffle fishway was ready and fish were able to migrate up and downstream (fiskväg + biotopvård).
	}}		}}
	{{Case study subcatchment		{{Case study subcatchment

Arolam at 11:00, 19 April 2013

2013-04-19T11:00:41Z

← Older revision		Revision as of 11:00, 19 April 2013
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	\|Main contact forename=Andreas		\|Main contact forename=Andreas
	\|Main contact surname=Bäckstrand		\|Main contact surname=Bäckstrand
			\|Main contact id=Arolam
	\|Contact organisation=Länsstyrelsen västra Götalands län		\|Contact organisation=Länsstyrelsen västra Götalands län
	\|Contact organisation url=projektwebbar.lansstyrelsen.se/rolfsan/Sv/folj-atgardsarbetet/Pages/Storan_apelnas_kraftverk.aspx		\|Contact organisation url=projektwebbar.lansstyrelsen.se/rolfsan/Sv/folj-atgardsarbetet/Pages/Storan_apelnas_kraftverk.aspx
	\|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 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 (fiskväg + biotopvård).		\|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.
			In 2009 construction of the new pool riffle fishway was ready and fish were able to migrate up and downstream (fiskväg + biotopvård).
	}}		}}
	{{Case study subcatchment		{{Case study subcatchment