Case study:Bristol Frome Diffuse Pollution Project

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Location: 51° 34' 46.61" N, 2° 26' 59.64" W

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity, Land use management - agriculture, Water quality
Country	England
Main contact forename	Harriet
Main contact surname	Alvis
Main contact user ID	User:H.alv
Contact organisation	Bristol Avon Rivers Trust
Contact organisation web site	http://www.bristolavonriverstrust.org
Partner organisations
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 Bristol Frome Diffuse Pollution Project is a project led by Bristol Avon Rivers Trust (BART) from June 2015 – March 2016, as part of the Bristol Avon Catchment Partnership. The project has been conducted in partnership with the Farming and Wildlife Advisory Group (FWAG) South West and the farmers and landowners along the Ladden Brook and Bradley Brook which form the headwaters of the Bristol Frome. It has been driven by Water Framework Directive classifications that have shown a need to identify issues and take actions to contribute towards a reduction in the levels of sediment and nutrients entering the Bristol Frome and its tributaries.

Reports commissioned by the Environment Agency suggested that a focus on agricultural practices within the streams of the upper Bristol Frome catchment should be carried out as a priority and pre-requisite to further improvement works. Therefore, the Bristol Frome Diffuse Pollution Project chose to focus on two agriculture dominated brooks, The Ladden and Bradley Brooks in order to achieve the overall aim of reducing nutrient and sediment inputs from diffuse agricultural sources.

Baseline and wet weather monitoring, farmer engagement and advisory visits, walkover surveys and past Environment Agency data was used to assess areas for capital improvements to be made that would have the greatest impact for the timescale and funding available. These were decided upon as fencing to reduce bank erosion and an in-ditch wetland to separate clean water from dirty yard run-off that was previously entering the brook.

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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 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