Case study:Meades water garden regeneration project: Difference between revisions

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Revision as of 11:43, 9 August 2012

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Location: 51° 42' 6.07" N, 0° 36' 41.97" W
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Project overview

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Status Complete
Project web site
Themes Habitat and biodiversity, Monitoring, Water quality
Country England
Main contact forename Nick
Main contact surname Elbourne
Main contact user ID User:NickRRC
Contact organisation River Restoration Centre
Contact organisation web site
Partner organisations Chiltern Chalk Streams Project
Parent multi-site project
This is a parent project
encompassing the following
projects
No
Looking upstream at the restored river

Project summary

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On the River Chess, The Meades Water Gardens are a public amenity area re-landscaped in the 1970s to create formal water gardens, through excavation of the beds and river. However, the ponds rapidly lost their wildlife and aesthetic value. The project planned to regenerate the Meade Water Gardens through the removal of weirs and the re-introduction of gravel beds.

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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Catchment

River basin district Thames
River basin Colne

Subcatchment

River name Chess
Area category 10 - 100 km²
Area (km2)
Maximum altitude category 200 - 500 m
Maximum altitude (m) 278278 m <br />0.278 km <br />27,800 cm <br />
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Improved grassland
Waterbody ID GB106039029870



Site

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Name Meades Water Garden
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology Single channel, Straight, High width:depth
Reference morphology Single channel, Sinuous, Step-pool, Pool-riffle
Desired post project morphology
Heavily modified water body true
National/international site designation
Local/regional site designations
Protected species present
Invasive species present
Species of interest
Dominant hydrology Groundwater
Dominant substrate Bedrock, Gravel
River corridor land use Urban
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

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Reach length directly affected (m) 120 m0.12 km <br />12,000 cm <br />
Project started 2007/01/01
Works started
Works completed 2008/01/01
Project completed
Total cost category 50 - 100 k€
Total cost (k€) 62 k€62,000 € <br />
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

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Mitigation of a pressure Reservoir impoundment
Hydromorphology Quantity & dynamics of flow, Flow velocities
Biology Macrophytes, Invertebrates
Physico-chemical
Other reasons for the project Habitat enhancement


Measures

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Structural measures
Bank/bed modifications Planting, Introduction of gravel, Two weir removed
Floodplain / River corridor Removal of diseased vegetation, Wetland created
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other


Monitoring

Hydromorphological quality elements

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

Biological quality elements

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quality elements
Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative
Macrophytes Yes Yes Yes Improvement
Invertebrates Yes Yes Improvement

Physico-chemical quality elements

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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

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


Monitoring documents

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Image gallery


Downstream of the bridge during construction (top) and post-restoration (below)
Upstream of the bridge, during construction (top) and post-restoration (below)
Established wildlife upstream
Downstream of the bridge prior to project
Upstream of bridge prior to project


Additional documents and videos

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Additional links and references

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Link Description

Supplementary Information

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