Case study:Letting the Dove Flow 2

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Location: 53° 4' 0.00" N, 1° 47' 0.00" W

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Project overview

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Status	In progress
Project web site
Themes	Fisheries, Habitat and biodiversity, Hydromorphology, Social benefits
Country	England
Main contact forename	Tim
Main contact surname	Brooks
Main contact user ID	User:TBrooks
Contact organisation	Environment Agency
Contact organisation web site
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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The river Dove in Dovedale and Wolfscote Dale is one of the most renowned river stretches in Britain. In recognition of its ecological value, the river is designated as part of the nationally important Dove Valley and Biggin Dale Site of Special Scientific Interest (SSSI). The river Dove is further recognised as being internationally important for its wildlife and is designated as part of the Peak District Dales Special Area of Conservation (SAC). Dovedale is also a National Nature Reserve (NNR) managed by the National Trust.

The 2010 Site Improvement Plan (SIP) for the Peak District Dales SAC states that weirs, dams and other structures create pressures on the river Dove for White Clawed Crayfish, Bullhead and Brook Lamprey and prevent natural hydrological processes happening, limiting natural habitat development.It recommends that this should be addressed through a river restoration strategy.

Letting the Dove Flow is the name for the river restoration strategy that builds on the findings of previous studies and aims to develop a long term plan to restore the river and a partnership to implement short, medium and long term.

Monitoring surveys and results

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A heritage audit was commissioned to assess the cultural and historic significance of the 177 weirs recorded and heritage assets along the 10km of the riverine SSSI in order to inform restoration proposals. The report provides a record of the built structures and includes an assessment of their historical significance along with recommendations for recording and interpretation.

A River Habitat Survey (RHS) has been undertaken over the last two years to provide an update to the last one undertaken in 2012. This will provide a useful baseline for future RHS post weir removal on a reach basis and throughout the entire SSSI.

A specific ecological monitoring strategy has been put in place to supplement routine EA monitoring locations within the SSSI. Additional fish and invertebrate surveys will be undertaken pre and post weir removal.

Lessons learnt

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Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Dovedale WFD water body codes GB104028057780 WFD (national) typology Calcareous WFD water body name River Dove source to River Manifold Pre-project morphology Impounded, Reinforced banks Reference morphology Actively meandering, Pool-riffle Desired post project morphology Actively meandering, Pool-riffle Heavily modified water body No National/international site designation EU - Special Area of Conservation Local/regional site designations SSSI (Site of Special Scientific Interest), NNR Protected species present Yes Invasive species present Yes Species of interest white clawed crayfish (Austropotamobius pallipes), bullhead (Cottus gobio) Dominant hydrology Dominant substrate Cobble, Gravel River corridor land use Broadleaf/mixed woodland (semi natural), Rock/scree or sand dunes, Rough unimproved grassland/pasture 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) 1000010,000 m <br />10 km <br />1,000,000 cm <br /> Project started 2015 Works started Works completed Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design Natural England Stakeholder engagement and communication National Trust Works and works supervision Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Impoundments (not hydropower) Hydromorphology Continuity of sediment transport, Quantity & dynamics of flow Biology Fish Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications removing or breaching weirs and reinforcements, Allowing stone weirs and bank reinforcements to break down, Removal of bank reinforcements Floodplain / River corridor Improvement of natural flows, Improve longitudinal connectivity, Introducing large woody debris, r Planform / Channel pattern Channel naturalisation, Improvement of channel morphology, Removal of impoundments Other Non-structural measures Management interventions Monitoring strategy Social measures (incl. engagement) Awareness raising, Engagement with a wide range of stakeholders, Improved leisure environment for angling and recreation 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