Case study:Woughton on the Green bank stabilization: Difference between revisions

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Willow logs and brash, were collected by the Park's Trust who were undertaking scheduled tree works in the area.  These were secured in the channel using fence posts and steel fencing wire (see photos).
Willow logs and brash, were collected by the Park's Trust who were undertaking scheduled tree works in the area.  These were secured in the channel using fence posts and steel fencing wire (see photos).
 
|Lessons learn=While the project was successful at stabilizing the bank where it was most at risk (i.e. steep and close to public footpath), the bank poaching caused by dogs has just moved to another location.  This should be considered in any similar project that seeks to restore bank that is deteriorating as a result of livestock or recreational activity.  Consider where dogs or livestock will next enter the river, and consider whether the river at that point will be sensitive to the pressure.  Are there any other unstable banks or important habitats such as spawning gravels that may be impacted?  Consider whether fencing or formal drinking bathing points may be required.
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Revision as of 11:50, 23 December 2014

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Location: 52° 2' 8.88" N, 0° 43' 8.22" W
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Project overview

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Status Complete
Project web site
Themes Fisheries, Habitat and biodiversity
Country England
Main contact forename Rob
Main contact surname Clapham
Main contact user ID
Contact organisation Environment Agency
Contact organisation web site
Partner organisations Milton Keynes Park's Trust
Parent multi-site project
This is a parent project
encompassing the following
projects
No
Project picture

Project summary

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Dog bathing and signal crayfish activity had significantly weakened a 30-metre section of bank on the Ouzel in Milton Keynes. Significant amounts of bank material were collapsing in to the river, contributing to deterioration of river habitats. Furthermore, there was concern that a well used footpath, adjacent to this section, was at risk of failure in the future if nothing were done to stabilize the bank.

Works were jointly undertaken by the Environment Agency, Park's Trust and Volunteers to improve public safety and to prevent further deterioration of habitats.

Willow logs and brash, were collected by the Park's Trust who were undertaking scheduled tree works in the area. These were secured in the channel using fence posts and steel fencing wire (see photos).

Monitoring surveys and results

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Lessons learnt

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While the project was successful at stabilizing the bank where it was most at risk (i.e. steep and close to public footpath), the bank poaching caused by dogs has just moved to another location. This should be considered in any similar project that seeks to restore bank that is deteriorating as a result of livestock or recreational activity. Consider where dogs or livestock will next enter the river, and consider whether the river at that point will be sensitive to the pressure. Are there any other unstable banks or important habitats such as spawning gravels that may be impacted? Consider whether fencing or formal drinking bathing points may be required.


Image gallery


Large log bundles at base
First row of willow bundles in place
Bundles and wiring
ShowHideAdditionalImage.png


Catchment and subcatchment



Site

Name Woughton on the Green
WFD water body codes GB105033037971
WFD (national) typology Low, Medium, Calcareous
WFD water body name Ouzel US Caldecote Mill
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body Yes
National/international site designation
Local/regional site designations
Protected species present No
Invasive species present Yes
Species of interest
Dominant hydrology
Dominant substrate
River corridor land use
Average bankfull channel width category 5 - 10 m
Average bankfull channel width (m)
Average bankfull channel depth category 0.5 - 2 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) 3030 m <br />0.03 km <br />3,000 cm <br />
Project started 2014/09/09
Works started 2014/10/09
Works completed 2014/10/10
Project completed
Total cost category Less than 1 k€
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 Less than 1 k€ Environment Agency Rob Clapham
Stakeholder engagement and communication Less than 1 k€ Environment Agency Rob Clapham
Works and works supervision Less than 1 k€ Environment Agency Rob Clapham
Post-project management and maintenance Less than 1 k€ Milton Keynes Park's Trust Rob Rieke
Monitoring



Reasons for river restoration

Mitigation of a pressure
Hydromorphology Substrate conditions
Biology
Physico-chemical
Other reasons for the project Prevent loss of adjacent footpath due to bank collapse


Measures

Structural measures
Bank/bed modifications Bank stabilisation
Floodplain / River corridor
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other


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

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Supplementary Information

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