Case study:Colfes School

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Location: 51° 26' 40.69" N, 0° 1' 49.48" E

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Project overview

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Status	Planned
Project web site
Themes	Fisheries, Flood risk management, Habitat and biodiversity, Social benefits
Country	England
Main contact forename	Matthew
Main contact surname	Blumler
Main contact user ID
Contact organisation
Contact organisation web site
Partner organisations	This would be a collaborative project involving a partnership between local organisations and landowners, Green Chain, Walk, Environment Agency
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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Break river out of concrete channel, re-profile creating natural banks. Replace straightened course of the river with natural meanders. Allow more natural fluvial geomorphological processes to occur and increase habitat. Improved flood alleviation to downstream areas. Integrate with school sports facilities and buildings to provide educational facility for school that could be shared with others. Provide riverside walk to link existing river restorations in Chinbrook Meadows and Sutcliffe Park. Potential for extending the current GREEN CHAIN WALK through Chinbrook Meadows northwards into Greenwich and award winning Sutcliffe Park, alongside a naturalised urban river. Provide natural amenity and green pedestrian walk within urban environment. The Quaggy at this point lies within a straight concrete channel, inside a 6 metre strip enclosed by high fences. The fenced off strip runs through school and private playing fields. As a result the river is extremely degraded with poor aesthetic appeal, is devoid of geomorphological features of interest and has low ecological value. From the upper (southern) end it is possible to walk through largely green space to Chinbrook Meadows and a section of the Green Chain walk where the river was restored in 2002. From the lower (northern) end it is a short distance to Sutcliffe Park where the river was recently restored as part of a flood alleviation scheme. Enhancement would connect these two restored sections for wildlife and people, as well as providing new habitat and a direct educational facility within adjacent school playing fields.
Landowner details:
1. South section: Greenwich council – meadow. Approached and receptive. (Councillor Brian Woodcraft. Ward: Middle Park and Sutcliffe.)
2. Middle section and Left bank: Colfes school – playing fields and fenced off rough ground adjacent to river. Approached in 2005 – not receptive at that time
3. Middle and north section and right bank: Old Brockleians rugby club – playing fields and rough ground adjacent to the river. Approached and receptive. (Ron Tennant, previous president)
4. North section left bank: Possibly or previously Civil Service. Playing fields.
Key themes (Other):
1.) BAP. It will contribute towards the ‘Creating a Better Place’ objective to make proportionate progress towards BAP targets for wetland-related species and habitats’
2.) The works would also fall within the Agency’s duties as set out in the Environment Act 1995 to promote the conservation and enhancement of the natural beauty and amenity of inland and coastal waters and of land associated with such waters.
3) Green Chain Walks – Would create the possibility of extending the green chain walks with a new riverside walk linking the boroughs of Bromley, Lewisham and Greenwich.
Requires the agreement and cooperation of four landowners, including Colfes school. Of these one, Colfes school, was not receptive three years ago when approached in 2005. Sensitivity regarding playing fields, although these do not go right to the edge of the current river course.

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Thames River basin London Subcatchment River name Quaggy Area category 10 - 100 km² Area (km2) Maximum altitude category 100 - 200 m Maximum altitude (m) 135135 m <br />0.135 km <br />13,500 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Suburban Waterbody ID GB106039023290 Other case studies in this subcatchment: Lidl, Manor House Gardens, Manor House Gardens Gauging Station, Manor Park, Mottingham Farm, Quaggy Flood Alleviation Scheme, Quaggy channel improvements, River Quaggy- Chinbrook meadows, Sutcliffe Park, Sydenham Cottages Nature Reserve Site Edit site Name WFD water body codes GB106039023290 WFD (national) typology WFD water body name Quaggy 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 Edit project background Reach length directly affected (m) 750 m0.75 km <br />75,000 cm <br /> Project started 2008/01/01 Works started Works completed Project completed Total cost category 500 - 1000 k€ 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 Edit reasons for restoration Mitigation of a pressure Flood risk management, Urbanisation Hydromorphology Channel pattern/planform Biology Physico-chemical Other reasons for the project Recreation Measures Edit Measures Structural measures Bank/bed modifications Bank reprofiling, Removing of concrete structures Floodplain / River corridor Planform / Channel pattern Creation of meanders Other Non-structural measures Management interventions Social measures (incl. engagement) Aesthetics, Improved public access, Community Education Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit 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 Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information