Case study:Restoration of the Roer for species migration

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Location: 51° 6' 37.51" N, 5° 59' 15.18" E

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Project overview

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Status	Complete
Project web site	http://www.vismigratieroer.nl
Themes	Fisheries, Habitat and biodiversity
Country	Netherlands
Main contact forename	Peter
Main contact surname	Brouwers
Main contact user ID
Contact organisation	Waterschap Roer en Overmaas
Contact organisation web site	http://www.overmaas.nl
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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The Roer river forms a potential habitat for fish species that migrate between the Meuse and the Roer. The Dutch section of the Roer also forms a route for fish that migrate between the North Sea and the Meuse to their spawning.

The main aim of the project was to facilitate improved habitat access and migratory conditions in the Roer Delta for Atlantic salmon (Salmo salar) and other Annex II species, namely asp (Aspius aspius), bullhead (Cottus gobio), river lamprey (Lampetra fluviatilis), brook lamprey (Lampetra planeri), sea lamprey (Petromyzon marinus), bitterling (Rhodeus sericeus susbsp. amarus)and weatherfish (Misgurnis fossilis).

A new fish ladder was built in Roermond and the existing fish ladder at Hambeek was improved to increase its effectiveness. These two structures overcome the last remaining obstacles for fish migration between the river Meuse and the Dutch part of the river Roer, thus opening up an improved migratory route for fish from the North Sea to Germany.

Monitoring has confirmed that three of the species targeted by the project (salmon, sea lamprey and European bullhead are using the new Roermond fish ladder. Salmon and sea lamprey have also been recorded using the improved Hambeek migratory facilities and ongoing monitoring by the beneficiary will continue to measure the project’s long term impact on fish populations in the Roer.

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body No National/international site designation Local/regional site designations Natura 2000 Protected species present Yes Invasive species present No Species of interest Namely asp (Aspius aspius), bullhead (Cottus gobio), river lamprey (Lampetra fluviatilis), brook lamprey (Lampetra planeri), sea lamprey (Petromyzon marinus), bitterling (Rhodeus sericeus susbsp. amarus), weatherfish (Misgurnis fossilis) 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 Edit project background Reach length directly affected (m) 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 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 Hydromorphology Biology 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 http://ec.europa.eu/environment/life/project/Projects/index.cfm?fuseaction=home.showFile&rep=laymanReport&fil=LIFE06 NAT NL 000078 LAYMAN.pdf Layman’s report (2008). Life-nature project - Restoration of fish migration in the river Roer http://ec.europa.eu/environment/life/project/Projects/index.cfm?fuseaction=home.showFile&rep=file&fil=LIFE06 NAT NL 000078 AfterLIFE NL.pdf LIFE Nature Roer Migration Projects. After LIFE Conservation Plan 2009 http://ec.europa.eu/environment/life/project/Projects/index.cfm?fuseaction=search.dspPage&n proj id=3128&docType=pdf LIFE Roer Web information Supplementary Information Edit Supplementary Information