]> 2026-04-23T16:54:12+00:00 Case study:Apelnäs fishway at River Rolfså 500 en Approved Länsstyrelsen västra Götalands län Fenno-Scandian Shield Yes No Yes false No 57.631596763657,12.496434248657 Arolam Andreas Länsstyrelsen västra Götalands län Bäckstrand 6 1 - 10 m³/s ,, ,,, 4334 2009-12-31Z 2455196.5 2008 2454466.5 Complete 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. Apelnäs fishway at River Rolfså apelnäs fishway at river rolfså http://projektwebbar.lansstyrelsen.se/rolfsan/Sv/folj-atgardsarbetet/Pages/Storan_apelnas_kraftverk.aspx No Rolfsån River Basin Skagerrak and Kattegat River basin River Rolfsån river rolfsån Apelnäs hydropowerplant at river Storån apelnäs hydropowerplant at river storån Brown trout (Salmo trutta) European eel (Anguilla anguilla) Rolfsån River 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). Fisheries Habitat and biodiversity Hydropower 1200 1000 - 5000 k€ River Storån 2012-11-13T11:13:57Z 2456244.9680208 2013-09-06T06:35:46Z 2456541.774838 Apelnäs fishway at River Rolfså 500 1 plainlist 5 [[Category:Case study]] [[Project title::!Apelnäs fishway at River Rolfså]] [[Subcatchment title::Rolfsån River]] Apelnäs fishway at River Rolfså# QUERY76553c3f398605965f12af422d02385c