Case study:Dove Weir removal

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Location: 53° 2' 0", -1° 45' 39"
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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 Alex
Main contact surname Swann
Main contact user ID
Contact organisation Leek and District Fly Fishing Association
Contact organisation web site
Partner organisations
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.

Warning signs provided to stop public removing debris or rebuilding weirs.

Monitoring surveys and results

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Lessons learnt

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Image gallery


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
ShowHideAdditionalImage.png


Catchment and subcatchment

Catchment

River basin district Humber
River basin Dove

Subcatchment

River name R Maniford/Dove from R Hamps to R Churnet
Area category 100 - 1000 km²
Area (km2)
Maximum altitude category 200 - 500 m
Maximum altitude (m) 357
357 m
0.357 km
35,700 cm
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Improved grassland
Waterbody ID GB104028052670



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

Reach length directly affected (m) 1000 m
1 km
100,000 cm
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 €
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

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

Structural measures
Bank/bed modifications Vegetation cut back, Weir removal
Floodplain / River corridor Cut back of trees, Introducing large woody debris
Planform / Channel pattern Adding sinuosity
Other
Non-structural measures
Management interventions
Social measures (incl. engagement) Information for the public
Other


Monitoring

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

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

Element When monitored Type of monitoring Control site used Result
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



Additional documents and videos


Additional links and references

Link Description
http://www.therrc.co.uk/case studies/dove%20at%20dovedale.pdf River Restoration Centre Case Study

Supplementary Information

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