Case study:Austria cross-border section - Monitoring sediment transport and Habitat modelling (ETZ-Project “DraMurCi” 2009-2013)

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Location: 46° 43' 16.52" N, 15° 49' 32.61" E

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Project overview

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Status	Complete
Project web site	http://www.dramurci.eu/page/
Themes	Environmental flows and water resources, Habitat and biodiversity, Hydromorphology
Country	Austria, Slovenia
Main contact forename	Jörg
Main contact surname	Raderbauer
Main contact user ID	User:9984
Contact organisation	freiland Environmental Consulting Civil Engineers Ltd.
Contact organisation web site	http://www.freiland.at
Partner organisations	Office of the Styrian Government - Department 14 Watermanagement, resources and sustainability
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 sediment transport monitoring made in this project was the first monitoring of this kind in Austria and was as successful as it was expected to be. “At the border section of the Mur River between Austria and Slovenia, systematic river training and hydroelectric power plants have led to a channel incision with considerable ecological and technical consequences. A sediment transport model predicted further incision if no countermeasures are implemented. The thin gravel layer (≈0.5 m) poses the threat of a river-bed break-through, calling for urgent action. In a Basic Water Management Concept, several types of ecologically oriented countermeasures have been proposed. Recently, one measure that combines self-initiated riverbank erosion with sediment input from a newly constructed side-arm has been implemented. To determine the success of the measure, we conducted a detailed survey along with particle tracking by telemetry. The results show the anticipated response. So far the Mur River showed the intended response to the measures with respect to self-initiated bank erosion and distribution of the inserted gravel. The introduced monitoring program proved to be suitable for the assessment of the measures.” (Abstract: 4th ECRR Conference on River Restoration Italy, Venice S. Servolo Island 16-21 June 2008 - Institute of Water agement, Hydrology and Hydraulic Engineering, Department of Water, Atmosphere and Environment, University of Natural Resources and Applied Life Sciences, Vienna)

To identify the major impairments for the ecological status of waters and aquatic habitats at Drava and Mur, a scientific monitoring of habitats and species was carried out. Particular attention was paid to the wolf spider Arctosa cinerea, the beetle species Cicindela hybrida, and the bird species Actitis hypoleucos and Charadrius dubius. In the area of Bad Radkersburg, Drauchenbach up to the border a fish-ecological evaluation has been conducted at the river Mur. In the area of the measure Gosdorf I, an Interreg IIIa (2002-2008) project, a detailed monitoring and habitat modeling as well as an investigation of habitat types and species, visitor pressure and neophytes was done. The pre-and post-monitoring-results show a remarkable development of existing and new habitats of the studied protected resources. The dynamic river engineering projects have significantly promoted the development of all habitats concerned and a substantial improvement of habitats and animals has been documented.

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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