]> 2026-04-09T13:14:17+00:00 Case study:Wandle River Restoration Project: Hackbridge 500 en Approved Weir removal Habitat diversification Increase in-channel hydromorphological diversity Wandle Trust London Borough of Sutton Great Britain Yes No Yes false No Challenges: - Very urban nature of the site. Complex flood modelling and design was required. - Multiple underground utilities which had to be identified and avoided during the works. - Many and varied stakeholder needs and opinions. 51.377131,-0.16039 Pollygwenbryant Tim Wandle Trust Longstaff Weir removal, Habitat diversification,,Marginal wetland berms created,Increase in-channel hydromorphological diversity, ,,Community involvement, Aesthetics,, 21637 London Borough of Sutton, Hackbridge Restoration © Wandle Trust Hackbridge Before, During and After.png 2012-09-01Z 2456171.5 Complete This project is one of four sites delivered through the Defra Catchment Restoration Fund. Designs were developed based on detailed 2D flood modelling undertaken in conjunction with cbec eco-engineering. Practical works were delivered during Summer 2014 with appointed contractors, Cain Bioengineering.   The work started with the removal of old toe-boarding from around the edge of Culvers Island. The island was re-profiled with a new bank line created using hazel faggot bundles secured with chestnut stakes and backed with coir netting. Sediment from the channel was then placed behind the new bank line.     The weir structures either side of the island were removed and the river channel narrowed using a combination of chestnut posts and hazel faggot bundles or gabion stone.   A causeway was built to create a backwater pond area using coir geotextile layered over a bed of stone and weighed down with gravel and sediment and planted with aquatic plants. The new island banks were re-graded to create a gradually sloped bank to which a variety of aquatic vegetation was planted with a team of 60 volunteers over three days.   Variations in depth, width and the introduction of gravel, small boulders and Large Woody Debris have all provided a diversity of habitats and increased the flow diversity of the channel throughout the site. Wandle River Restoration Project: Hackbridge wandle river restoration project: hackbridge No London Thames Marginal wetland berms created Wandle (Carshalton Branch at Carshalton) wandle (carshalton branch at carshalton) Community involvement Aesthetics 10 - 100 km² 160 100 - 200 m Wandle (Carshalton Branch at Carshalton) GB106039017640 Habitat and biodiversity Hydromorphology Social benefits GB106039017640 Wandle (Carshalton Branch at Carshalton) 2015-03-01Z 2457082.5 2015-05-06T10:59:28Z 2457148.957963 2017-06-06T15:30:02Z 2457911.1458565 Wandle River Restoration Project: Hackbridge 500 1 plainlist 5 [[Category:Case study]] [[Project title::!Wandle River Restoration Project: Hackbridge]] [[Subcatchment title::Wandle (Carshalton Branch at Carshalton)]] Wandle River Restoration Project: Hackbridge# QUERY43f95d40f21582e170e3dcfb6a11d50c