Case study:The Axe and Exe River Improvement Project (AERIP)
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Project overview
Status | In progress |
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Project web site | |
Themes | Economic aspects, Flood risk management, Habitat and biodiversity, Social benefits, Water quality |
Country | England |
Main contact forename | John |
Main contact surname | Hickey |
Main contact user ID | |
Contact organisation | Westcountry Rivers Trust |
Contact organisation web site | http://www.wrt.org.uk/ |
Partner organisations | River Exe and Tributaries Association, Axe Vale Rivers Association, Environment Agency, South West Water, Exe Mitigation Group, River Exe Foundation, Exmoor National Park, Forestry Commission, Natural England, East Devon AONB, Dorset AONB, South West Rivers Association |
This is a parent project encompassing the following projects |
Project summary
The Axe and Exe River Improvement Project (AERIP) is a partnership project using Catchment Restora-tion Funds to undertake river catchment restoration on the Axe and Exe. The partnership, led by the Westcountry Rivers Trust, has been carrying out river restoration and undertaking works to address the causes of Water Framework Directive issues for many years.
Through restoration work the project will address issues including: barriers to fish migration, preventing fish from reaching their natural spawning grounds; diffuse pollution, the run-off of soil and nutrients which cause damage to spawning grounds and a negative impact on the wider river ecology;interrupted conveyance of river gravels reducing the spawning habitat for trout and salmon; degraded river corridor habitat, including the impacts from abandoned tree coppice and excessively eroded and poached riverbanks damaged by stock access.
Monitoring surveys and results
Lessons learnt
Catchment and subcatchment
Site
Name | Axe and Exe Catchments |
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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 | |
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 | 500 - 1000 k€ |
Total cost (k€) | 800800 k€ <br />800,000 € <br /> |
Benefit to cost ratio | |
Funding sources | Catchment Restoration Funds |
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
Measures
Structural measures
| |
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Bank/bed modifications | Marginal planting, Gravel augmentation |
Floodplain / River corridor | Track creation for sediment traps |
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 | ||
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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 | ||
---|---|---|---|---|---|---|
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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