The London Borough of Havering consulted with the Environment Agency in order to improve the characteristics of the river over a 1.8 kilometre reach, thereby improving habitat for the local water vole colony and other aquatic species. A section just downstream of the project work site is designated SSSI status and the area to be improved is a designated local nature reserve requiring close liaison with the clients ecologists. Improvement works included construction of in-channel berms using faggots, flow deflectors utilising felled timbers, creation of backwater ponds, re-grading of bed levels to create shelves and islands.
Reinstatement of the overflow pond was also undertaken. Reeds and habitat areas were improved along the river margins in order provide for river flow diversity. An area of Japanese Knotweed situated upon the riverbank was treated within the scope of works. Access improvements including steps were installed to provide for a safe access for school parties who undertake site visits to the river corridor.