Case study:The Bowmont Catchment

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Location: 55° 27' 37.76" N, 2° 13' 56.75" W

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Project overview

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Status	Complete
Project web site	http://www.therrc.co.uk/sites/default/files/projects/14_bowmont.pdf
Themes	Flood risk management, Habitat and biodiversity, Hydromorphology, Land use management - agriculture, Land use management - forestry, Monitoring
Country	Scotland
Main contact forename	Mark
Main contact surname	Wilkinson
Main contact user ID
Contact organisation	James Hutton Institute
Contact organisation web site	http://www.hutton.ac.uk/
Partner organisations	Tweed Forum
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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The Bowmont Water is a tributary of the River Tweed. The valley has a history of significant flood events. Following extreme floods in 2008 and 2009, the Tweed Forum (through the Cheviot Futures initiative) began to look at more natural ways to tackle coarse sediment problems and manage flood risk. Measures such as bank protection engineered log jams (ELJs), bar apex ELJs and flow restrictors have been installed in the catchment. Alongside this, large areas of trees have been planted on the floodplains of the catchment coupled with pockets of upland planting. Over the 4-year period of monitoring, 78 leaky barrier structures have been installed to capture and stabilise sediment and attenuate flows. A total of 53ha of native riparian and floodplain forest have been planted.

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Bowmont Water WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body No National/international site designation Local/regional site designations Protected species present No Invasive species present No 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 2012 Works started Works completed Project completed Total cost category Total cost (k€) £100k"£" is not declared as a valid unit of measurement for this property. Benefit to cost ratio Funding sources Cheviot Futures Initiative 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 Flood risk management Hydromorphology Channel pattern/planform Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Deflectors Floodplain / River corridor Tree planting Planform / Channel pattern leaky woody dams 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