Case study:River Rea Restoration Project: Difference between revisions
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|Floodplain / River corridor=Removal of barriers | |||
|Management interventions=Riparian Management to increase the amount of light getting through the canopy, promote natural re-growth of bankside plants and increase levels of bank stability and stabilise the spread of Phytophthora amongst the Alders, reducing bank side collapse (another main source of sediment) | |||
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Revision as of 11:24, 24 July 2013
This case study is pending approval by a RiverWiki administrator.
Project overview
Status | In progress |
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Project web site | |
Themes | Economic aspects, Flood risk management, Habitat and biodiversity, Hydromorphology, Land use management - agriculture, Social benefits, Water quality |
Country | England |
Main contact forename | Emma |
Main contact surname | Buckingham |
Main contact user ID | |
Contact organisation | |
Contact organisation web site | |
Partner organisations | Natural England, Catchment Sensitive Farming, Environment Agency, Shropshire County Council, Shropshire Hills AONB, Shropshire Wildlife Trust, Severn Trent Water, Cleobury Mortimer Environmental Impact Forum, White Swan Piscatorials, Sustainable Eel Group, Neen Savage Parish Council, Wild Trout Trust, Burwarton, Shakenhurst and Burwarton Estates, Forestry Commission, Burwarton Syndicate |
Parent multi-site project | |
This is a parent project encompassing the following projects |
No |
Project summary
Many watercourses within the River Rea Catchment are failing to meet the required standards under the Water Framework Directive (WFD) due to failing fish numbers. The River Rea has long been known as a catchment in serious decline as a result of sedimentation, poor agricultural practices and fish migration barriers. The Severn Rivers Trust walkover surveys of the River Rea, confirmed that suspended sediment load is seen to be impacting on the ecological health of the river and a major cause of fish failure. Impacts such as agricultural run-off from fields and bank erosion caused by farm animals are major contributors to an excessive quantity of sediment entering the river system. Also good riparian habitats are in decline due to over shading and over mature and diseased alders dying and falling into the river causing excessive blockages and bank erosion scars.
Monitoring surveys and results
Lessons learnt
Catchment and subcatchment
Edit the catchment and subcatchment details
(affects all case studies in this subcatchment)
Site
Name | River Rea Catchment |
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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 | |
Protected species present | No |
Invasive species present | No |
Species of interest | |
Dominant hydrology | |
Dominant substrate | |
River corridor land use | Intensive agriculture (arable) |
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
Reach length directly affected (m) | |
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Project started | |
Works started | |
Works completed | |
Project completed | |
Total cost category | 1000 - 5000 k€ |
Total cost (k€) | 1084,6571,084,657 k€ <br />1,084,657,000 € <br /> |
Benefit to cost ratio | |
Funding sources |
Cost for project phases
Phase | cost category | cost exact (k€) | Lead organisation | Contact forename | Contact surname |
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Investigation and design | |||||
Stakeholder engagement and communication | |||||
Works and works supervision | |||||
Post-project management and maintenance | |||||
Monitoring |
Reasons for river restoration
Mitigation of a pressure | Agriculture, Barriers to fish migration |
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Hydromorphology | Continuity for organisms, Substrate conditions |
Biology | Fish |
Physico-chemical | |
Other reasons for the project |
Measures
Structural measures
| |
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Bank/bed modifications | Bank improvement |
Floodplain / River corridor | Removal of barriers |
Planform / Channel pattern | |
Other | |
Non-structural measures
| |
Management interventions | Riparian Management to increase the amount of light getting through the canopy, promote natural re-growth of bankside plants and increase levels of bank stability and stabilise the spread of Phytophthora amongst the Alders, reducing bank side collapse (another main source of sediment) |
Social measures (incl. engagement) | |
Other |
Monitoring
Hydromorphological quality elements
Element | When monitored | Type of monitoring | Control site used | Result | ||
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Before measures | After measures | Qualitative | Quantitative |
Biological quality elements
Element | When monitored | Type of monitoring | Control site used | Result | ||
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Before measures | After measures | Qualitative | Quantitative |
Physico-chemical quality elements
Element | When monitored | Type of monitoring | Control site used | Result | ||
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Before measures | After measures | Qualitative | Quantitative |
Any other monitoring, e.g. social, economic
Element | When monitored | Type of monitoring | Control site used | Result | ||
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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
Edit Supplementary Information