Case study:Marsh restoration on the Merlue

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Status	Complete
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Themes	Habitat and biodiversity
Country	France
Main contact forename	Eric
Main contact surname	Chaput
Main contact user ID
Contact organisation	Association pour le développement et l’animation de la Petite Montagne
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This is a parent project encompassing the following projects	No

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Rhône - Méditerranée River basin Subcatchment River name Hake Area category 10 - 100 km² Area (km2) 15 km²1,500 ha <br /> Maximum altitude category 200 - 500 m Maximum altitude (m) Dominant geology Siliceous Ecoregion Western Highlands Dominant land cover Waterbody ID Site Edit site Name Merlue WFD water body codes FRDR493a WFD (national) typology WFD water body name Pre-project morphology Single channel, Straight Reference morphology Single channel, Sinuous, Pool-riffle Desired post project morphology Heavily modified water body true National/international site designation Local/regional site designations Protected species present Invasive species present Species of interest Dominant hydrology Groundwater Dominant substrate Cobble, Gravel River corridor land use Average bankfull channel width category 2 - 5 m Average bankfull channel width (m) 33 m <br />0.003 km <br />300 cm <br /> Average bankfull channel depth category 0.5 - 2 m Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) 11 m³/s <br />1,000 l/s <br /> Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) 1450 m1.45 km <br />145,000 cm <br /> Project started 2008/07/01 Works started 2008/07/01 Works completed 2008/09/01 Project completed Total cost category 100 - 500 k€ Total cost (k€) 136 k€136,000 € <br /> Benefit to cost ratio Funding sources LIFE Streams 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 Structure & condition of riparian zones, Width & depth variation Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Increase in bed width Floodplain / River corridor Restoration of riparian marshes 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