Case study:Revitalisation of branch ’Felsőszentmártoni’ at River Dráva

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Location: 45° 50' 10.49" N, 17° 42' 30.06" E

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Project overview

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Status	Complete
Project web site	http://www.ddkovizig.hu/tartalom/revitalisation_of_branch_felsoszentmartoni_at_river_drava/311
Themes	Habitat and biodiversity
Country	Hungary
Main contact forename	Alajos
Main contact surname	Burián
Main contact user ID
Contact organisation	South-Transdanubian Water Management Directorate - titkarsag@ddvizig.hu
Contact organisation web site	http://www.ddkovizig.hu/
Partner organisations
Parent multi-site project	Case study:Revitalisation of branch ’Felsőszentmártoni’ at River Dráva
This is a parent project encompassing the following projects	No

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Project summary

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The ‘Felsőszentmártoni’ branch, situated in the region of ‘Felsőszentmárton’ settlement, is one of the left-side branches of River Dráva, which has completely cut-off from the main river by now and silted up significantly. The interventions done are the removal of overgrown salicaceae from the riverbed, the removal of silt along the whole length of the branch and it's deposition into the main channel of River Dráva. The reconstruction of the weir that now prevents proper water flow and thus water replenishment of the branch.

Works include:

• Dredging: removal of 47,735 m3 alluvium
• Reconstruction of the current weir - height reduction
• Pipeline laid in the lower parts of the weir
• Removal of the overgrown salicaceae trees

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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 Danube River basin Danube Subcatchment River name Drava Area category 1000 - 10000 km² Area (km2) Maximum altitude category 200 - 500 m Maximum altitude (m) Dominant geology Siliceous Ecoregion Alps Dominant land cover Extensive agriculture, Grassland Waterbody ID Other case studies in this subcatchment: Kleblach-Side channel, Revitalisation of branches ’Boros Dráva and Drávakeresztúri’, Water and Life for Drava and Vuka Site Edit site Name Felsőszentmárton WFD water body codes AEP438 WFD (national) typology 14 WFD water body name Pre-project morphology Artifical oxbow completely cut-off from the main river, Silted up significantly Reference morphology Sidearm Desired post project morphology Heavily modified water body National/international site designation EU - Special Area of Conservation Local/regional site designations National Park, UNESCO Biosphere Reserve, Natura 2000 Protected species present Invasive species present Species of interest Dominant hydrology Permanent lentic Dominant substrate Gravel, Silt River corridor land use Woodland, Intensive agriculture Average bankfull channel width category more than 50 m Average bankfull channel width (m) Average bankfull channel depth category 5 - 10 m Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) 502502 m³/s <br />502,000 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) 1500 m1.5 km <br />150,000 cm <br /> Project started 2010/11/01 Works started 2011/03/01 Works completed 2012/10/01 Project completed Total cost category 500 - 1000 k€ Total cost (k€) 596 k€596,000 € <br /> Benefit to cost ratio Funding sources European Union and co-financed by the European Regional Development Fund 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 South Transdanubian Regional Development Council and Agency ddrft@ddrft.hu Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Hydromorphology Quantity & dynamics of flow, Continuity of sediment transport, Substrate conditions Biology Fish: Species composition, Phytoplankton: Blooms Physico-chemical Nutrient concentrations Other reasons for the project Landscape enhancement, Community demand Measures Edit Measures Structural measures Bank/bed modifications Dredging, Weir modification, Creation of pipelines Floodplain / River corridor Cut back of trees Planform / Channel pattern Other Non-structural measures Management interventions Ensuring biodiversity Social measures (incl. engagement) Recreation Other Consultation, Information provision Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Quantity & dynamics of flow Yes Yes Improvement Continuity for organisms Yes Yes Improvement Substrate conditions Yes Yes Improvement Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Fish: Species composition Yes Yes Yes Yes Awaiting results Fish: Age structure Yes Yes Yes Awaiting results 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 http://okologia.mta.hu/en Centre for Ecological Research HAS - The institute network of the Hungarian Academy of Sciences is set to produce values for both national and international success in Hungarian and universal science. The Centre's primary aim is to play a fundamental role in promoting the common weal and in building the foundation for the future through valuable scientific achievements based on highly promising discovery research. The Centre consists of three institutes, the Balaton Limnological Institute, the Danube Research Institute and the Institute of Ecology and Botany. http://www.ovf.hu/ General Driectorate of Water Management - General Directorate of Water Management (OVF) is a background institution of the Ministry of Interior. It supports the work of the Minister regarding the flood management. Its main task is the coordination of flood hazard prevention, river control and flood protection activities, and the management of development projects concerning water bodies. OVF has 12 regional directorates which are coordinating the catchment management planning according to the requirements of the EU WFD. They take preventive and protective measures against floods, carry out status assessments and are the leading organizations in the management and implementation of river restoration projects. http://neki.gov.hu/ National Institute for Environment - The National Institute for Environment (NeKI) is a background institution of the Ministry of Rural Development, and assists the Minister in the various duties of water management, environmental protection and nature conservation. NeKI has 12 regional branch offices, and is in charge of the strategies, policies and regulations regarding the management and exploitation of water resources. It performs environmental monitoring, status and impact assessments, administrates the national network for hydrological, hydrographical, hydrogeological and quality measurements of public waters. NeKI also coordinates the planning and the implementation of national and EU projects. http://www.orszagoszoldhatosag.gov.hu/index en.php National Inspectorate for Environment, Nature and Water - The Inspectorate attends to administrational and water management matters, to analyses and consideration of law proposals in its field, and it supervises its 10 regional inspectorates as well. It coordinates international co-operations and takes part in the tasks connected to the EU integration. The regional inspectorates and two sub-offices are the 'green authorities' at first instance. The regional inspectorates are responsible for registration, monitoring, protection, conservation, reconstruction, rehabilitation, authorization and penalty processes regarding environment, nature and water in their assigned territory. http://wwf.hu/en WWF Hungary - WWF Hungary is the Hungarian arm of the WWF Network and was founded in 1991. It's main aims are protecting the biodiversity of Hungary by focusing on freshwaters, forests and priority species. They are also fighting against climate change and they support WWF's conservation work as well. They participated in the development of the Danube Strategy, as well as organized conservation projects on Hungary's two largest rivers, the Tisza and the Danube. http://www.icpdr.org/main/ International Commission for the Protection of the Danube River (ICPDR) - The ICPDR is an International Organisation consisting of 14 cooperating states and the European Union. Since its establishment in 1998, the ICPDR has grown into one of the largest and most active international bodies of river basin management expertise in Europe. The ICPDR deals not only with the Danube itself, but also with the whole Danube River Basin, which includes its tributaries and the ground water resources. Supplementary Information Edit Supplementary Information