Case study:Massadammen-dam removal in River Tabergsån

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Location: 57° 42' 24.46" N, 14° 6' 59.43" E

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Project overview

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Status	Complete
Project web site
Themes	Fisheries, Habitat and biodiversity, Hydropower, Hydromorphology, Spatial planning
Country	Sweden
Main contact forename	Peter
Main contact surname	Lindvall
Main contact user ID
Contact organisation	Länsstyrelsen i Jönköpings län
Contact organisation web site	http://projektwebbar.lansstyrelsen.se/vattern/Sv/besoksmal-vatterbackar/tabergsan/Pages/5-massadammen.aspx
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

After restoration (photo. Maria Arola)

Project summary

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Massadammen dam in the South of Jönköping in the River Tabergsån. The dam was built in 1906 for hydropower but the hydro power station was shut down in 1950´s. Because the dam was an obsticle for migrating fish it was decided to remove to improve the conditions for fish. The aim was to build fishpassage, increase the spawning areas for trout and to reduce the regulation and maintenance of the dam. The first plan of the restoration met heavy resistace from the local people because they wanted to maintain the water level. The new plan was made and three dams were built instead of one in the dammed area. The project was good example of the co-operation between different organization (municipality, consultants and local people) to find a goos solution for all parties.

Most of the work was done between early august to late october in 2011. Because of the restoration spawning area for fish increased from 29 000 to 36 000 m2. Also densities of trout increased in the upstream. Densities were measured to be 5 times higher after than before restorations. Total cost of the project was approximately 174 000 euros.

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Image gallery

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Restored channel (photo. Maria Arola)

Removed dam (photo. Maria Arola)

Added gravel (photo. Maria Arola)

Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Massadammen-Motala Ström WFD water body codes 067 WFD (national) typology WFD water body name Tabergsån Pre-project morphology Embanked, Artificial bed, Artificial channel Reference morphology Desired post project morphology Heavily modified water body Yes National/international site designation Local/regional site designations Protected species present No Invasive species present No Species of interest Dominant hydrology Artificially regulated 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 Edit project background Reach length directly affected (m) Project started 2007 Works started 2011/08/01 Works completed 2011/10/31 Project completed 2011/10/31 Total cost category 100 - 500 k€ Total cost (k€) 174174 k€ <br />174,000 € <br /> 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 Edit reasons for restoration Mitigation of a pressure Barriers to fish migration, Hydropower Hydromorphology Continuity for organisms Biology Fish Physico-chemical Other reasons for the project Measures Edit 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 Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit 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 Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information