Case study:Greater Thames Estuary Fish Migration Roadmap

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Location: 51° 31' 25.92" N, 0° 7' 42.81" W

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Project overview

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Status	In progress
Project web site	http://fishroadmap.london
Themes	Economic aspects, Fisheries, Flood risk management, Habitat and biodiversity, Monitoring, Social benefits, Spatial planning, Urban
Country	England
Main contact forename	Wanda
Main contact surname	Bodnar
Main contact user ID	User:WandaBodnar
Contact organisation	Thames Estuary Partnership
Contact organisation web site	http://thamesestuarypartnership.org/
Partner organisations
This is a parent project encompassing the following projects

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Project summary

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Rivers play an important role in our environment: regulating flood risks, transporting sediments and supporting biodiversity. Many of these services are linked to factors that indicate river health such as river flow and connectivity. River network connectivity influences species migration, diversity, and habitat occupancy.

Rivers in the North Sea region are some of the most fragmented by human development in the world due to the presence of artificial structures installed for water management. Man-made water management structures, or barriers, like weirs, sluices and locks can significantly delay and hinder the movement of migratory fish species subsequently reducing their diversity and abundance.

The Greater Thames Estuary Fish Migration Roadmap project seeks to pull together all barrier, pass, habitat, flood risk and development opportunity area data in one place to develop a strategic approach that looks at rivers as migratory routes that fish would use. This ‘whole system’, sea to source approach enables the visualisation of river network connectivity in entire catchments. It is an innovative tool designed to educate and inform decision making when it comes to habitat creation and enhancement, river restoration, riverside development and flood risk assessment.

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File:Roadmap

Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body National/international site designation Local/regional site designations Protected species present Invasive species present Species of interest Dominant hydrology Dominant substrate River corridor land use Average bankfull channel width category Average bankfull channel width (m) Average bankfull channel depth category Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) Project started Works started Works completed Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design Stakeholder engagement and communication Works and works supervision Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit Physico-chemical quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Any other monitoring, e.g. social, economic Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information