Case study:Downham Playing Fields: Difference between revisions

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{{Case study status
{{Case study status
|Approval status=Draft
|Approval status=Approved
}}
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{{Location
{{Location
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{{Site
{{Site
|Name=Downham Playing Fields
|Name=Downham Playing Fields
|WFD water body code=GB106039023260
|WFD water body name=Ravensbourne (Keston to Catford)
|Heavily modified water body=No
|Heavily modified water body=No
|Protected species present=No
|Protected species present=No

Latest revision as of 09:12, 27 October 2015

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Location: 51° 25' 24.06" N, 0° 0' 4.63" E
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Project overview

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Status Complete
Project web site
Themes Habitat and biodiversity, Social benefits, Urban
Country England
Main contact forename Siraj
Main contact surname Tahir
Main contact user ID
Contact organisation Environment Agency
Contact organisation web site
Partner organisations London Borough of Lewisham
Parent multi-site project
This is a parent project
encompassing the following
projects
No
Area of the project

Project summary

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Spring Brook regarded incorporating slight meanders in the river channel, removal of toe boards and the formation of wetland habitats through significant channel re-profiling. It is also proposed to introduce new bridge crossings and to refurbish existing crossing facilities.

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

Catchment

River basin district Thames
River basin London

Subcatchment

River name Ravensbourne (Keston to Catford)
Area category 10 - 100 km²
Area (km2)
Maximum altitude category 200 - 500 m
Maximum altitude (m) 274274 m <br />0.274 km <br />27,400 cm <br />
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Suburban
Waterbody ID GB106039023260



Other case studies in this subcatchment: Fordmill weir, Norman Park Bromley., Ravensbourne at Queensmead


Site

Name Downham Playing Fields
WFD water body codes GB106039023260
WFD (national) typology
WFD water body name Ravensbourne (Keston to Catford)
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

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Project started
Works started
Works completed
Project completed
Total cost category
Total cost (k€)
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
Hydromorphology
Biology
Physico-chemical
Other reasons for the project


Measures

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


Monitoring

Hydromorphological 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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Before measures After measures Qualitative Quantitative

Physico-chemical quality elements

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Monitoring documents



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Supplementary Information

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