Removal of the half tide weir in Wandsworth has enabled silt to be cleared and a wildlife habitat to be restored.
The half tide weir was built at the mouth of the river Wandle in the late 1980s. Silt had accumulated immediately upstream, some of which was contaminated, and aquatic ecology had suffered as a result.
As part of its improvement work to offset the impact of construction of the Tideway tunnel, Tideway collaborated with a range of stakeholders to remove the weir and to create a new aquatic habitat. The work was completed in March and it is now designated a site with importance for nature conservation.
Wandsworth’s Environment Spokesman, Cllr Jonathan Cook, said: “Removing all the sludge and silt that has built up over the years and removing this redundant old weir will allow the water to flow much more freely and hopefully restore a thriving habitat for fish and other aquatic wildlife. It will also encourage a much wider range of plant life to flourish in the river again.”
Earlier this year we reported how testing the sediment at the weir site enabled the contaminated silt to be removed separated which totally changed the way the project was managed.
For full case study, ‘Encouraging Fish Habitats’, click here
For previous article, ‘Contaminated Sediment in Wandsworth – When Testing Pays Off’, click here