Case study:Tottenham Lock Floating Ecosystem

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Location: 51° 35' 11.36" N, 0° 3' 23.11" W

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity, Water quality
Country	England
Main contact forename	Galen
Main contact surname	Fulford
Main contact user ID	User:Biomatrix Water
Contact organisation	Biomatrix Water Solutions Limited
Contact organisation web site	http://www.biomatrixwater.com
Partner organisations	Land & Water; Terraqua
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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The project was under Thames 21 initiative to improve rivers and canals for people and wildlife. The objective was to increase wildlife habitat and biodiversity in the area, at the same time helping to reduce pollution, improve water quality and visually soften hard edges. The project involves installation of a series of Floating Ecosystem active edges made up of various sizes, based along the riverside. The systems are connected to the riverside to the riverside using a heavy duty weighted mooring line with a break strength exceeding 5,000 KG. The mooring line is fixed at the top using a 12mm mechanical expansion bolt and the bottom anchor is connected to an anchor weight. The anchor line is threaded directly through the floating structure and stainless steel bracketing system. This configuration allows the floating ecosystem to move smoothly up and down during changing water levels, while floating up during flood events and lowering down during low water conditions allowing vertical movement, whilst minimising any horizontal movement.

Monitoring surveys and results

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Lessons learnt

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Planting earlier in the season allowed top and root growth to establish more quickly thus encouraging faster biofilm development leading and therefore water quality improvement. Earlier establishment of plant growth provided new habitat and encouraged nesting birds, adding to the biodiversity.

Image gallery

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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 Lee (from Tottenham Locks to the Tideway) Area category 1000 - 10000 km² Area (km2) Maximum altitude category 100 - 200 m Maximum altitude (m) 141141 m <br />0.141 km <br />14,100 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Urban Waterbody ID GB106038077852 Other case studies in this subcatchment: Blackhorse Lane Waterfront Park, Dagenham Brook de-silting, Essex Wharf, Hackney Marsh recreation grounds, Hackney Marshes - Wick Field recreation ground, Lea Bridge Waterway Wall Improvements, Lee Navigation by Walthamstow Marshes, Springfield Marina Site Edit site Name WFD water body codes GB106038077852 WFD (national) typology WFD water body name Lee (from Tottenham Locks to the Tideway) 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) Project started Works started 2015/05/04 Works completed 2015/05/06 Project completed 2015/05/06 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 Edit reasons for restoration Mitigation of a pressure Hydromorphology Biology Self cleaning ecosystem to enhance water quality and biodiversity, and avoid pollution Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floating bank structures planted with vegetation to improve aethetics and water quality Floodplain / River corridor Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) 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