Lowering a 1.6 metre weir at Goat Bridge will bring together disconnected sections of the River Wandle at Mitcham, meaning a variety of aquatic wildlife such as fish and insects cannot reach a variety of habitat to complete their life cycles. The weir impounds (restricts) about 500 metres of river, creating water conditions more akin to a lake than a river and leaving wildlife unable to reach a variety of habitats crucial to their survival.
Adapting the weir at this section of the River Wandle is at the heart of a project between Thames Water, the South East Rivers Trust, the Environment Agency, landowners Sutton Council and designers Mott MacDonald.
Demolition work was undertaken by the landowners in the summer of 2023 on sites adjacent to the river as part of their planning conditions.
The proposed works to lower the weir and make other improvements to the river channel were due to take place in the autumn of 2023. Current financial and delivery challenges across Thames Water’s project delivery programme, plus seasonal river needs, means these works have been put back until summer 2024.
The final landscaping works that are required to be undertaken by the landowner as part of their planning conditions will likely follow on after the river works are completed.