Case study:The Monmouthshire, Olway and Trothy (MOAT) Project

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Location: 52° 4' 35.46" N, 2° 39' 15.91" W

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Project overview

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Status	In progress
Project web site	http://http://www.wyeuskfoundation.org/projects/moat.php
Themes	Environmental flows and water resources, Habitat and biodiversity, Land use management - agriculture, Water quality
Country	England
Main contact forename	Stephen
Main contact surname	Marsh-Smith
Main contact user ID
Contact organisation	Wye & Usk Foundation
Contact organisation web site	http://www.wyeuskfoundation.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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Starting in September 2012, this project extends the type of work being carried out in Herefordshire's WHIP2 into Monmouthshire.

Olway

WUF's 2009 survey of the lower Usk tributaries found that the Olway, although clear of barriers, suffered from the effects of agricultural pollution. Water Framework Directive (WFD) failures for salmonid fish, macrophytes, phytobenthos and phosphate, in the presence of good levels of invertebrates, strongly suggest the effects of diffuse pollution, such as run off from farm yards, degraded habitat and elevated sediment levels. These are very common problems in the Olway catchment. Success in mitigating diffuse pollution is derived from engagement with the entire farming community. The project will meet the parish councils and the local schools (which most of the farmers' children or grandchildren attend) will also be involved. With this level of engagement, the uptake and contribution to our challenge fund for farm works is significantly greater. During MOAT, all the farmers within the Olway catchment will be visited and offered a free and confidential assessment. 50 will have full farm risk assessments and plans will be developed that will improve Water Body status. Where required, a quick and easy-to-access grant pool is available to bring about the proposed changes. Historically farm plans have focussed on other issues such as increasing outputs and diversity but seldom specifically water quality. The project will reduce loadings of phosphate and fine sediment and the risk of diffuse pollution occurring from each farm, improving fisheries and water bodies downstream. At least 6km of riparian fencing will also be erected to reduce riparian erosion and restore in stream habitat.

Trothy

Surveys conducted by WUF and APEM of the Trothy (a lower Wye tributary, joining at Wyesham) found that the principal pressures are from agricultural diffuse and point source pollution, habitat degradation and elevated sediment levels as a result of unregulated stock access to river banks. There is also one significant barrier to fish migration on the main stem of the lower Trothy, with others on the lower reaches of the Cwmcarfan, Hendre and Wachan brooks, preventing them being used as trout and salmon nursery areas. In the Trothy catchment the Environment Agency's officers are visiting all the farmers and will be responsible for reducing sediment and diffuse pollution while WUF will be responsible for restoring 7km of stream habitat on the upper Trothy as well as carrying out works to allow fish access.

Principal Sources of Project Funding. WUF is very grateful to the funders who have made this project possible:

Wales Water Framework Directive Funding (EAW) £42,000

Welsh Government Ecosystem Resilience and Diversity Fund £40,000*

DCWW £75,000

EU Fisheries Fund £8,000

• £5,000 of this is reserved for invasive weeds in Wales

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Image gallery

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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 2014/01/01 Works started Works completed Project completed 2014/12/31 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 Agricultural pollution Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Restoring rivers, Livestock fencing Floodplain / River corridor Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Community involvement, interacting with farmers 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