Case study:Restoration of the Roer for species migration

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Location: 51° 6' 38", 5° 59' 15"
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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



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
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Project background

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Works completed
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Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname
Investigation and design
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Monitoring



Reasons for river restoration

Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
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Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
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Monitoring

Hydromorphological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

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Any other monitoring, e.g. social, economic

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Monitoring documents



Additional documents and videos


Additional 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

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