Case study:Aston Clinton River Restoration

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Location: 51° 47' 46", -0° 43' 30"
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Project overview

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Status Complete
Project web site
Themes Flood risk management, Habitat and biodiversity, Social benefits
Country England
Main contact forename Jessica
Main contact surname Dippie
Main contact user ID User:Jdippie
Contact organisation Buckinghamshire County Council
Contact organisation web site
Partner organisations Environment Agency, Aylesbury Vale District Council, Aston Clinton Parish Council, Green Park
Parent multi-site project
This is a parent project
encompassing the following
projects
No
View of newly created watercourse

Project summary

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During the winter of 2013/14 there was flooding in Aston Clinton Park, partly as a result of a collapsed culvert. The opportunity was taken to create a new stretch of open watercourse which would bypass the collapsed culvert and was set to benefit the environment, reduce flood risk and be more cost efficient than replacing the very old culvert. The project involved many different stakeholders at different levels of community and council involvement including: the Environment Agency; the tenant farmer; Buckinghamshire County Council, Aylesbury Vale District Council and Aston Clinton Parish Council. The stakeholders worked together by sharing and reducing costs, making use of and blending the skills available within the different organisations and community. The project would have been much more expensive and difficult to achieve without the excellent partnership working demonstrated by all stakeholders. All stakeholders were happy with and proud of the project. The newly cut channel will continue to develop and mature and be a source of pleasure to the community and landowners and benefit to the environment.

Works included: 185m stretch of open river installed to bypass the collapsed culvert.

Monitoring surveys and results

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Ecologists in the Environment Team at Buckinghamshire County Council carried out an initial assessment once the project was complete to establish what life was found in the newly created watercourse. They plan to carry this out annually to see how the river develops and establishes over time.

Lessons learnt

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The positive outcome of the river restoration project in Aston Clinton is as a result of great partnership working across all the stakeholders involved. This project really demonstrates that by pooling skills and resources across many organisations and individuals, costs can be reduced and all stakeholders become passionate about achieving an end result that reflects everyone's interests; flood management, biodiversity, ecology, farming and benefitting the community.

Though the project did not run smoothly all the time, this meant that lessons have been learnt regarding project management, especially CDM regulations, early engagement and communication. which can be implemented into future projects and future partnership work.


Image gallery


Flooding over BCC and ACPC land
freshly created bund and scrapes
View downstream to new culvert and watercourse
Gravels being spread on watercourse bed
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Catchment and subcatchment



Site

Name Bear Brook
WFD water body codes
WFD (national) typology
WFD water body name
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 2015/08/01
Works started
Works completed
Project completed
Total cost category
Total cost (k€) £36,000
"£" is not declared as a valid unit of measurement for this property.
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 Flooding problem, collapsed culvert
Hydromorphology
Biology New habitat for wildlife and wild flowers
Physico-chemical
Other reasons for the project


Measures

Structural measures
Bank/bed modifications Deculverting
Floodplain / River corridor
Planform / Channel pattern Bypass channel, Creation of new channel
Other
Non-structural measures
Management interventions
Social measures (incl. engagement) Engagement with a wide range of stakeholders
Other Information board erected


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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