Case study:Bourne End Recreation Ground River Enhancement Project

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Location: 51° 34' 32", -0° 42' 21"
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Project overview

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Status Complete
Project web site http://http://www.chilternsaonb.org/news/261/19/River-Wye-Rebourne.html
Themes Environmental flows and water resources, Fisheries, Habitat and biodiversity, Hydromorphology, Social benefits, Urban
Country England
Main contact forename Allen
Main contact surname Beechey
Main contact user ID User:ChilternChalkStreams
Contact organisation Chilterns Chalk Streams Project
Contact organisation web site http://www.chilternsaonb.org/chalk-streams
Partner organisations Chiltern Rangers, Revive the Wye, Environment Agency, Wooburn Gree & Bourne End Parish Council, Foundation for Water Research
Parent multi-site project
This is a parent project
encompassing the following
projects
No
View of completed works, 18th Feb 2016

Project summary

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The purpose of the Project was to enhance river habitat along a 150m stretch of the R. Wye that borders Bourne End Recreation Ground in Buckinghamshire. Through a combination of tree management work and the installation of Woody Habitat structures, the scheme narrowed the previously over-wide channel and increased heterogeneity of flow and habitat. The scheme was designed to directly contribute to the R. Wye achieving Good Ecological Status under the Water Framework Directive. This project was one of three habitat enhancement Projects completed on the river in 2016 supported by the Catchment Partnership Action Fund. The Project was managed by the Chilterns Chalk Streams Project (CCSP) working in partnership with the Chiltern Rangers CIC, Environment Agency, Wooburn Green & Bourne End Parish Council under the banner of Revive the Wye a local community initiative. The work as carried out using a combination of specialist contractors (tree work) and volunteers. The project was funded by the CCSP, the Catchment Partnership Action Fund and the Chiltern Rangers CIC.

Monitoring surveys and results

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Fixed point photography before, during & after the works. Monthly riverfly monitoring - Anglers Riverfly Monitoring Initiative (commenced September 2015)

Lessons learnt

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Image gallery


View downstream before work started
View upstream before work started
Tree work in progress, January 2016
Volunteers making a start on the first marginal berm
Locally won woody material was used to create berms
Marginal berms were constructed in daylighted sections of the river to ensure colonisaiton of structure by marginal vegetation
Volunteers installing a small flow deflector to create a holding pot for fish
Completed deflector with associated scour pool
Completed work looking upstrea, 18th February 2016
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Catchment and subcatchment

Catchment

River basin district Thames
River basin Thame and South Chilterns

Subcatchment

River name Wye (High Wycombe fire station to Thames)
Area category 100 - 1000 km²
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m) 185
185 m
0.185 km
18,500 cm
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Suburban
Waterbody ID GB106039023880



Site

Name Bourne End Recreation Ground
WFD water body codes GB106039023880
WFD (national) typology
WFD water body name Wye (High Wycombe fire station to Thames)
Pre-project morphology Straightened, Over-widened
Reference morphology Chalk stream
Desired post project morphology
Heavily modified water body No
National/international site designation
Local/regional site designations
Protected species present Yes
Invasive species present Yes
Species of interest Brown Trout, stone loach, bullhead (Cottus gobio), Otter (Lutra lutra)
Dominant hydrology Chalk derived baseflow
Dominant substrate Gravel
River corridor land use Parklands garden, Urban
Average bankfull channel width category 5 - 10 m
Average bankfull channel width (m)
Average bankfull channel depth category Less than 0.5 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) 150
150 m
0.15 km
15,000 cm
Project started 2015/05/04
Works started 2016/01/19
Works completed 2016/02/18
Project completed 2016/02/24
Total cost category 10 - 50 k€
Total cost (k€)
Benefit to cost ratio
Funding sources Catchment Partnership Action Fund, Chilterns Chalk Streams Project, Chiltern Rangers

Cost for project phases

Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname
Investigation and design 1 - 10 k€ Chilterns Chalk Streams Project Allen Beechey
Stakeholder engagement and communication Less than 1 k€ Revive the Wye
Works and works supervision 1 - 10 k€ Chilterns Chalk Streams Project Allen Beechey
Post-project management and maintenance Less than 1 k€ Landowner
Monitoring Less than 1 k€ Revive the Wye

Supplementary funding information

Funding contributions: £4,500 Chilterns Chalk Streams Project (incl. officer time) £2,300 Catchment Partnership Action Fund £1,250 Chiltern Rangers CIC (staff time) £150 River Chess Association (1 day at skilled volunteer day rate) £2,250 Volunteer time (30 volunteer days at unskilled day rate)



Reasons for river restoration

Mitigation of a pressure
Hydromorphology Supporting elements: not-high
Biology Fish populations: poor
Physico-chemical Phosphate: moderate
Other reasons for the project lack of habitat diversity, poor macrophytes, improve local park


Measures

Structural measures
Bank/bed modifications Creation of pools, Fish habitat restoration, Introducing large woody debris, Habitat restoration
Floodplain / River corridor Habitat creation, Tree management
Planform / Channel pattern Channel narrowing, Re-meandering
Other
Non-structural measures
Management interventions
Social measures (incl. engagement) Community involvement
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
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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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