Case study:Gottar Water weir fish barrier easement

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Location: 55° 52' 2.90" N, 4° 36' 46.42" W

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Project overview

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Status	In progress
Project web site	http://www.rafts.org.uk/project-tenders/
Themes	Fisheries, Habitat and biodiversity
Country	Scotland
Main contact forename	Rob
Main contact surname	Mitchell
Main contact user ID
Contact organisation	Rivers and Fisheries Trusts of Scotland
Contact organisation web site	http://www.rafts.org.uk/
Partner organisations	Quarriers Trust, Clyde River Foundation, SEPA
Parent multi-site project
This is a parent project encompassing the following projects	No

Gottar water weir

Project summary

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The aim of the project in the long term is to ensure fish can pass Gottar Water Weir to access the habitats upstream. Potential options to achieve this may include, but are not exclusive to, installation of a fish pass, partial removal of the structure or full removal. The objectives of this specific contract are: - to provide baseline information to a level suitable to inform options appraisal design of measures, - to list and appraise measures for easing fish passage - after discussion with the client, to produce a design for one selected measure suitable for a design and build contract.

Monitoring surveys and results

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The weir is a clear barrier to fish migration: electric fishing data show an absence of Atlantic Salmon of any age class upstream, but presence of Salmon immediately downstream.

Lessons learnt

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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 2015/03/01 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 Impassable barrier to migratory fish Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Feasibility and Optioneering study nearing completion. Preferred option yet to be identified. 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