Case study:Dove Weir removal

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Location: 53° 2' 0.13" N, 1° 45' 39.48" W

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity, Hydromorphology, Land use management - agriculture, Monitoring, Spatial planning
Country	England
Main contact forename	Nick
Main contact surname	Elbourne
Main contact user ID	User:NickRRC
Contact organisation	River Restoration Centre
Contact organisation web site
Partner organisations	Leek and District Fly Fishing Association
Parent multi-site project
This is a parent project encompassing the following projects	No

River Dove downstream of weir removal, with introduced woody debris

Project summary

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The Leek and District Fly Fishing Association (LDFFA) undertook work to remove an artificial weir in an attempt to restore a more natural flow to the river. The river was also 're-wilded' to introduce woody debris and other material to enhance fish habitats.

Monitoring surveys and results

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Lessons learnt

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Image gallery

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Example of an existing weir upstream of works, August 2011

One of the sites of weir removal, August 2011

Introduced woody debris and establishment of vegetation within 12 months, August 2011

Created riffles

Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Anglian River basin Broadland Rivers Subcatchment River name Dove Area category 100 - 1000 km² Area (km2) Maximum altitude category Less than 100 m Maximum altitude (m) 6969 m <br />0.069 km <br />6,900 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Arable and Horticulture Waterbody ID GB105034045710 Site Edit site Name Dovedale WFD water body codes GB104028052670 WFD (national) typology WFD water body name R Maniford/Dove from R Hamps to R Churnet Pre-project morphology Single channel, Impounded, High width:depth, Embanked Reference morphology Single channel, Pool-riffle Desired post project morphology Heavily modified water body Yes National/international site designation UK - Site of Special Scientific Interest Local/regional site designations Area of Special Conservation Interest Protected species present No Invasive species present No Species of interest Dominant hydrology Artificially regulated Dominant substrate Gravel, Silt River corridor land use Woodland, Extensive agriculture Average bankfull channel width category 10 - 50 m Average bankfull channel width (m) Average bankfull channel depth category 5 - 10 m 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) 1000 m1 km <br />100,000 cm <br /> Project started 2010/07/01 Works started Works completed 2010/08/01 Project completed Total cost category 1 - 10 k€ Total cost (k€) 2 k€2,000 € <br /> Benefit to cost ratio Funding sources Leek and District Fly Fishing Association Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design Leek and District Fly Fishing Association Stakeholder engagement and communication Leek and District Fly Fishing Association Works and works supervision Leek and District Fly Fishing Association Post-project management and maintenance Leek and District Fly Fishing Association Monitoring Leek and District Fly Fishing Association Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Reservoir impoundment, Abundant weirs Hydromorphology Substrate conditions, Channel pattern/planform, Quantity & dynamics of flow Biology Fish: Species composition, Fish: Abundance Physico-chemical Other reasons for the project Improvement of ecological value, Enhancement of natural flow Measures Edit Measures Structural measures Bank/bed modifications Vegetation cut back Floodplain / River corridor Trees felled, Natural debris introduced Planform / Channel pattern Removal of a weir, Increase in sinuousity Other Non-structural measures Management interventions Social measures (incl. engagement) Warning signs provided to stop public removing debris or rebuilding weirs 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 Substrate conditions Yes Yes Yes Improvement Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Fish: Species composition Yes Yes Yes Awaiting results Fish: Abundance Yes Yes Yes Awaiting results 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 http://www.therrc.co.uk/case studies/dove%20at%20dovedale.pdf River Restoration Centre Case Study Supplementary Information Edit Supplementary Information