Case study:Stony Stratford Sluices Bypass Channel

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Location: 52° 3' 9", -0° 51' 22"
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Project overview

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Status Complete
Project web site
Themes Fisheries, Habitat and biodiversity, Hydromorphology
Country England
Main contact forename Rob
Main contact surname Clapham
Main contact user ID User:Robclapham
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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The Great Ouse between Milton Keynes and Buckingham is a section of river that has historically suffered deterioration in, part due to the number of man-made structures on the watercourse. Following floods, these large structures prevent re-colonization of displaced fish and impound the river, reducing flows and sediment movement, with impacts on habitat quality and diversity.

To mitigate these pressures, a partnership project was formed by the Environment Agency and Milton Keynes Parks Trust. The works installed a fish friendly flow control structure at the upstream end of a previously disconnected paleo-channel allowing water to flow through it and around Stony Stratford Sluices which are currently impassable to fish.

Monitoring surveys and results

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Electric Fishing surveys to be carried out in the first summer following completion.

Lessons learnt

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Catchment and subcatchment



Site

Name Stony Stratford
WFD water body codes GB105033037920
WFD (national) typology
WFD water body name Ouse (Buckingham to Cosgrove)
Pre-project morphology Sinuous
Reference morphology
Desired post project morphology Sinuous
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 Clay
River corridor land use Improved/semi-improved grassland/pasture
Average bankfull channel width category 2 - 5 m
Average bankfull channel width (m)
Average bankfull channel depth category 0.5 - 2 m
Average bankfull channel depth (m)
Mean discharge category 0.1 - 1.0 m³/s
Mean annual discharge (m3/s)
Average channel gradient category more than 0.1
Average channel gradient
Average unit stream power (W/m2)


Project background

Reach length directly affected (m) 250
250 m
0.25 km
25,000 cm
Project started 2014/04/01
Works started 2016/03/13
Works completed 2016/03/31
Project completed 2016/03/31
Total cost category 50 - 100 k€
Total cost (k€)
Benefit to cost ratio
Funding sources FCRM GiA, Milton Keynes Parks Trust, Environment Agency Grant in Aid

Cost for project phases

Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname
Investigation and design 1 - 10 k€ Fishtek Consulting Adam Fryer
Stakeholder engagement and communication Less than 1 k€ Milton Keynes Park's Trust Rob Riekie
Works and works supervision 50 - 100 k€ AMCO
Post-project management and maintenance 1 - 10 k€ Milton Keynes Park's Trust
Monitoring Less than 1 k€ Environment Agency Rob Clapham



Reasons for river restoration

Mitigation of a pressure Impoundments (not hydropower)
Hydromorphology substrate conditions, Continuity for organisms, Quantity & dynamics of flow
Biology Fish
Physico-chemical
Other reasons for the project


Measures

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



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Additional links and references

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Supplementary Information

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