Case study:River Dulais Restoration Project
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Project overview
Status | Complete |
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Project web site | |
Themes | Habitat and biodiversity, Land use management - fisheries"Land use management - fisheries" is not in the list (Economic aspects, Environmental flows and water resources, Fisheries, Flood risk management, Habitat and biodiversity, Hydropower, Hydromorphology, Land use management - agriculture, Land use management - forestry, Monitoring, ...) of allowed values for the "Theme" property. |
Country | Wales |
Main contact forename | Nick |
Main contact surname | Elbourne |
Main contact user ID | |
Contact organisation | River Restoration Centre |
Contact organisation web site | http://www.therrc.co.uk |
Partner organisations | Environment Agency Wales |
Parent multi-site project | |
This is a parent project encompassing the following projects |
No |
Project summary
The River Dulais is typical of many local rivers, where unrestricted grazing, mostly by sheep, has resulted in a loss of bankside vegetation. Accordingly, there is reduced cover for fish, bank/bed instability and increased erosion. Traditionally, the approach was to extensively fence off rivers and introduce revetments, but this project looked to introduce the option of softer engineering and river restoration to the catchment.
A variety of techniques were used to restore the river, including bank grading and toe protection using live willow bundles. In deep stretches of the river with more powerful flow, upturned trees were installed to act as natural revetments. Trees were also planted to steady the banks, with all trees additionally providing further habitat.
Monitoring surveys and results
Lessons learnt
Catchment and subcatchment
Site
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Project background
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Cost for project phases
Phase | cost category | cost exact (k€) | Lead organisation | Contact forename | Contact surname |
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Monitoring |
Reasons for river restoration
Mitigation of a pressure | |
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Hydromorphology | |
Biology | |
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Measures
Structural measures
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Bank/bed modifications | |
Floodplain / River corridor | |
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Non-structural measures
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Monitoring
Hydromorphological quality elements
Element | When monitored | Type of monitoring | Control site used | Result | ||
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Before measures | After measures | Qualitative | Quantitative |
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Any other monitoring, e.g. social, economic
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Before measures | After measures | Qualitative | Quantitative |
Monitoring documents
Image gallery
Additional documents and videos
Additional links and references
Link | Description |
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Supplementary Information
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