West London Dyke Erosion Control Class Environmental Assessment (EA)

The Upper Thames River Conservation Authority (UTRCA), in coordination with the City of London, undertook a Municipal Class Environmental Assessment (Class EA) to identify preferred solutions for addressing erosion and scour conditions in two areas along the West London Dyke: the Anne Street Site, and the Harris Park Site. The study was undertaken in accordance with the Municipal Engineers Association Municipal Class EA process (2000, as amended in 2007, 2011, and 2015).

Both structures, the Ann Street Weir at the Ann Street Site and the rock vanes at the Harris Park Site, direct the flow of the Thames River in a manner that could compromise the foundation of the West London Dyke. The Class EA was undertaken to identify and evaluate alternative solutions that mitigate future erosion at these sites. Alternatives considered included structure and/or shoreline modifications, partial or complete removal of structures, added dyke toe protection, or a combination thereof.

A Public Information Centre (PIC) was held to provide background information on the study, an overview of the existing conditions, alternative solutions considered, preliminary recommendations, and environmental mitigation.