Case study:3Rivers - Lumburn:Walkham:Tavy: Difference between revisions

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{{Case study status
{{Case study status
|Approval status=Draft
|Approval status=Approved
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{{Location
{{Location
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|Main contact surname=Kendall
|Main contact surname=Kendall
|Main contact id=David chapman
|Main contact id=David chapman
|Contact organisation=West Country Rivers Trust
|Contact organisation=Westcountry Rivers Trust
|Contact organisation url=wrt.org.iluk
|Contact organisation url=wrt.org.iluk
|Partner organisations=Devon Wildlife Trust, South West Water, Tamar Valley AONB, Tavy Walkham and Plym Fishing Club
|Partner organisations=Devon Wildlife Trust, South West Water, Tamar Valley AONB, Tavy Walkham and Plym Fishing Club
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Other actions included the completion of 15km of river walkover surveys, engaging and training 14 volunteers, and half a hectare of native broadleaf woodland was planted.
Other actions included the completion of 15km of river walkover surveys, engaging and training 14 volunteers, and half a hectare of native broadleaf woodland was planted.
|Monitoring surveys and results=Water chemistry testing was regularly undertaken as part of the project to help identify phosphate sources.  This testing was undertaken by Westcountry Rivers Trust and Students from Plymouth University.  A more detailed study of metals in these rivers was also undertaken to help to understand more fully the historical issue with regard to heavy metals in the catchments.
|Monitoring surveys and results=Water chemistry testing was regularly undertaken as part of the project to help identify phosphate sources.  This testing was undertaken by Westcountry Rivers Trust and Students from Plymouth University.  A more detailed study of metals in these rivers was also undertaken to help to understand more fully the historical issue with regard to heavy metals in the catchments.
|Lessons learn=Relatively short term projects (12 months or less) such as this make it difficult to build moment to any degree and identify and contact the most relevant land/ home owners with regard to impact on the rivers.  Higher impact farms, such as the larger dairy units are particularly difficult to engage.  Householders on non-mains drainage are also difficult to engage with through the normal methods such as attendance at events and markets etc.; the most effective way of engaging with non-mains drainage householders was through cold calling.   
|Lessons learn=Relatively short term projects (12 months or less) such as this make it difficult to build moment to any degree and identify and contact the most relevant land/ home owners with regard to impact on the rivers.  Higher impact farms, such as the larger dairy units are particularly difficult to engage.  Householders on non-mains drainage are also difficult to engage with through the normal methods such as attendance at events and markets etc.; the most effective way of engaging with non-mains drainage householders was through cold calling.   


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Landowners were reticent to plant trees, generally because land is being used for agricultural and the grants available for tree planting aren't significant.   
Landowners were reticent to plant trees, generally because land is being used for agricultural and the grants available for tree planting aren't significant.   


Further water quality monitoring is required to provide greater details of phosphate and other pollution inputs.  
Further water quality monitoring is required to provide greater details of phosphate and other pollution inputs.
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{{Image gallery}}
{{Case study image
{{Case study image
|File name=Lower Tavy Trees.JPG
|File name=Lower Tavy Trees.JPG
|Caption=Newly planted trees - Lower Tavy  
|Caption=Newly planted trees - Lower Tavy
}}
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{{Case study image
{{Case study image
|File name=Soil decompaction event - River Walkham.JPG
|File name=Soil decompaction event - River Walkham.JPG
|Caption=Farmers event - Soil de-compaction, River Walkham  
|Caption=Farmers event - Soil de-compaction, River Walkham
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{{Case study image
{{Case study image
|File name=Black Brook.JPG
|File name=Black Brook.JPG
|Caption=Water Quality Testing, Black Brook, River Walkham
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{{Case study subcatchment}}
{{Case study subcatchment
{{Site}}
|Subcatchment=Lower River Tavy
}}
{{Site
|Name=Rivers Lumburn, Walkham and Lower Tavy
|WFD water body code=GB108047007850, GB108047007870, GB108047007840,
|WFD water body name=Lumburn, Walkham, Lower Tavy
|Heavily modified water body=No
|Protected species present=No
|Invasive species present=No
}}
{{Project background}}
{{Project background}}
{{Motivations}}
{{Motivations
{{Measures}}
|Specific mitigation=Pollution incident,
|Physico-chemical quality elements=Phosphate
}}
{{Measures
|Floodplain / River corridor=floodplain woodland planting,
|Management interventions=Land management,
|Social measures=Volunteer engagement,
|Wider stakeholder / citizen engagement=Survey work,
}}
{{Hydromorphological quality elements header}}
{{Hydromorphological quality elements header}}
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Latest revision as of 08:25, 10 July 2018

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Location: 50° 31' 45.52" N, 4° 9' 38.87" W
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Project overview

Edit project overview
Status In progress
Project web site http://http://wrt.org.uk/project/3rivers-project/
Themes Water quality
Country England
Main contact forename Hazel
Main contact surname Kendall
Main contact user ID User:David chapman
Contact organisation Westcountry Rivers Trust
Contact organisation web site http://wrt.org.iluk
Partner organisations Devon Wildlife Trust, South West Water, Tamar Valley AONB, Tavy Walkham and Plym Fishing Club
Parent multi-site project
This is a parent project
encompassing the following
projects
No
Project picture

Project summary

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The project focused on Water Framework Directive Failures on these three rivers which largely related to phosphate inputs. There are a range of diffuse and point source phosphate inputs into these rivers from both rural and urban sources. We worked with partners to contact farmers who were likely to be having impacts through their land based activities and households who may have impacts through the use of non-mains foul drainage systems.

26 farm visits and associated integrated farm plans were undertaken, three agricultural events were attended and three agricultural demonstrations were delivered (soil decompaction, cross compliance, efficient slurry spreading). Three farm grants (surface water management x 2, streamside fencing) were also completed.

With regard to urban drainage, over 100 of the most vulnerable properties on non-mains drainage were visited to disseminate information on the recently introduced General Binding Rules. Local estate agents were also contacted to help disseminate information on the General Binding Rules as were the caravan/ campsites in this area (8).


Other actions included the completion of 15km of river walkover surveys, engaging and training 14 volunteers, and half a hectare of native broadleaf woodland was planted.

Monitoring surveys and results

Edit project overview to modify the Monitoring survey and results.


Water chemistry testing was regularly undertaken as part of the project to help identify phosphate sources. This testing was undertaken by Westcountry Rivers Trust and Students from Plymouth University. A more detailed study of metals in these rivers was also undertaken to help to understand more fully the historical issue with regard to heavy metals in the catchments.

Lessons learnt

Edit project overview to modify the lessons learnt.


Relatively short term projects (12 months or less) such as this make it difficult to build moment to any degree and identify and contact the most relevant land/ home owners with regard to impact on the rivers. Higher impact farms, such as the larger dairy units are particularly difficult to engage. Householders on non-mains drainage are also difficult to engage with through the normal methods such as attendance at events and markets etc.; the most effective way of engaging with non-mains drainage householders was through cold calling.

Good numbers of volunteers were available for tasks such as the undertaking of walkover surveys.

Landowners were reticent to plant trees, generally because land is being used for agricultural and the grants available for tree planting aren't significant.

Further water quality monitoring is required to provide greater details of phosphate and other pollution inputs.


Image gallery


Newly planted trees - Lower Tavy
Farmers event - Soil de-compaction, River Walkham
Water Quality Testing, Black Brook, River Walkham
ShowHideAdditionalImage.png


Catchment and subcatchment

Catchment

River basin district South West
River basin Tamar

Subcatchment

River name Lower River Tavy
Area category 100 - 1000 km²
Area (km2)
Maximum altitude category 200 - 500 m
Maximum altitude (m) 437437 m <br />0.437 km <br />43,700 cm <br />
Dominant geology Siliceous
Ecoregion Great Britain
Dominant land cover Improved grassland
Waterbody ID GB108047007840



Site

Name Rivers Lumburn, Walkham and Lower Tavy
WFD water body codes GB108047007850, GB108047007870, GB108047007840
WFD (national) typology
WFD water body name Lumburn, Walkham, Lower Tavy
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)
Project started
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
Stakeholder engagement and communication
Works and works supervision
Post-project management and maintenance
Monitoring



Reasons for river restoration

Mitigation of a pressure Pollution incident
Hydromorphology
Biology
Physico-chemical Phosphate
Other reasons for the project


Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor floodplain woodland planting
Planform / Channel pattern
Other
Non-structural measures
Management interventions Land management
Social measures (incl. engagement) Volunteer engagement
Other Survey work


Monitoring

Hydromorphological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

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

Supplementary Information

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