Case study:Erbistock Weir Removal

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Project overview

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Status Complete
Project web site http://naturalresources.wales/LIFEDeeRiver?lang=en
Themes Fisheries, Habitat and biodiversity, Hydromorphology
Country Wales
Main contact forename Josh
Main contact surname Robins
Main contact user ID User:JoshRRC
Contact organisation
Contact organisation web site
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Parent multi-site project

Case_study:LIFE Dee River

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Project summary

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The removal of the Erbistock weir marks a significant milestone for the EU-funded LIFE Dee River programme, offering a new era of ecological restoration for the River Dee. The completed work has already shown promising signs, with improvements being seen in the river's morphology, marking a return to its more natural state.

The removal of the weir has opened up an unimpeded passage for all fish species within the Dee, enhancing biodiversity and supporting the river’s ecosystems. Early observations indicate notable changes in the river's flow and sediment distribution, which are expected to further benefit local wildlife and improve overall river quality.

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Location: 52° 58' 22.84" N, 2° 57' 45.94" W
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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
National/international site designation
Local/regional site designations
Protected species present
Invasive species present
Species of interest
Dominant hydrology
Dominant substrate
River corridor land use
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Average bankfull channel width (m)
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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

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Project started
Works started
Works completed
Project completed
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Cost for project phases

Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname
Investigation and design
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Post-project management and maintenance
Monitoring



Reasons for river restoration

Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
Other reasons for the project


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

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

Biological quality elements

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Physico-chemical quality elements

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Monitoring documents



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Supplementary Information

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