Case study:Meades water garden regeneration project

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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	http://www.therrc.co.uk
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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(affects all case studies in this subcatchment)

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

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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
http://www.therrc.co.uk/case studies/meades%20water%20garden.pdf	River Restoration Centre Case Study

Supplementary Information

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