Case study:The Axe and Exe River Improvement Project (AERIP)

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Location: 50° 54' 8.60" N, 3° 29' 25.39" W

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Project overview

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Status	In progress
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

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Project summary

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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.

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district South West River basin East Devon Subcatchment River name Lower Axe Area category 100 - 1000 km² Area (km2) Maximum altitude category 200 - 500 m Maximum altitude (m) 224224 m <br />0.224 km <br />22,400 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Arable and Horticulture Waterbody ID GB108045008870 Site Edit site Name Axe and Exe Catchments 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 Edit project background Reach length directly affected (m) 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 Investigation and design Stakeholder engagement and communication Works and works supervision Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Barriers to fish migration, Pollution incident Hydromorphology Continuity for organisms, Structure & condition of riparian zones Biology Fish Physico-chemical Nutrient concentrations Other reasons for the project Economic, Social, Climate change mitigation Measures Edit Measures Structural measures 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 Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit Physico-chemical quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Any other monitoring, e.g. social, economic Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information