GREATER THAMES ESTUARY FISH MIGRATION ROADMAP
Rivers in the North Sea region are some of the most fragmented by human development in the world. Diadromous fish, such as the European eel (Anguilla anguilla), are completely depend on free migration between marine and freshwater habitats to complete their life cycle.
National legislation and various EU directives, such as the Water Framework Directive (WFD) require the free passage of migratory fish species in European waters. River restoration and intertidal habitat enhancement works in the UK, however, are completed in an opportunistic way, and similarly, migration barriers such as weirs are only addressed in an opportunistic manner and usually only one barrier at a time.
The Greater Thames Estuary Fish Migration Roadmap project seeks to address the lack of integrated approach by pulling together all barrier, pass, habitat, flood risk and development opportunity area data together in one place. With waterways considered as migratory routes (identified as ‘Highways’, ‘A-roads’ and ‘B-roads’), the Roadmap acts as a tool that enables the visualisation of barrier locations and river connectivity in entire catchments.
See the Roadmap in development below, and visit the main website for more information.