Case study:Pumlumon Peatland Restoration for Floodwater Management

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Location: 52° 26' 29.85" N, 3° 46' 13.39" W

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Project overview

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Status	In progress
Project web site	http://www.therrc.co.uk/sites/default/files/projects/37_pumlumon.pdf
Themes	Flood risk management, Habitat and biodiversity, Water quality
Country	Wales
Main contact forename	Liz
Main contact surname	Montgomeryshire Wildlife Trust
Main contact user ID
Contact organisation	Montgomeryshire Wildlife Trust
Contact organisation web site	http://www.montwt.co.uk/
Partner organisations	Defra, Natural Resources Wales, Powys County Council, Ceredigion County Council, Communities First Mahynlleth, Ecodyfi and Pentir Pumlumon, Dyfi Biosphere, Cambrian Mountains Initiative, Leeds University, Bangor University, RSPB, Centre for Ecology and Hydrology, Welsh Government
Parent multi-site project
This is a parent project encompassing the following projects	No

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The Montgomeryshire Wildlife Trust has been running the Pumlumon Living Landscape Project (Photo 1 and Map 1) since 2005, during which time it has developed and demonstrated the benefits of an ecosystem approach to landscape, people, the economy and wildlife. Rewetting upland peat bogs, through the blocking of drainage ditches, improves their condition and water retention capability, creates new areas for wildlife, and helps reduce climate affecting emissions. The Pumlumon project recognises that the future for upland farming is threatened; however, there is also awareness that the uplands of Wales offer vital economic opportunities both in terms of carbon and floodwater. • The Pumlumon Living Landscape Project has identified a number of ditch blocking methods to support floodwater management works across of range of sites. • The capital works cost to carry out effective flood water management techniques on degraded bog is minimal. However, it represents a potentially valuable economic opportunity for upland landowners. • The data collected to date have been analysed by CEH Wallingford. The hydrological restoration carried out on Glaslyn has raised the water table by 5cm.

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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