Case study:Witzelsdorf Pilot Project

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Location: 48° 7' 38.17" N, 16° 50' 42.59" E
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Project overview

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Status Complete
Project web site http://www.donauauen.at/?story_id=1713
Themes Environmental flows and water resources, Flood risk management
Country Austria
Main contact forename Stefan
Main contact surname Schneeweihs
Main contact user ID User:Nationalpark Donau-Auen
Contact organisation Nationalpark Donau-Auen
Contact organisation web site http://http://www.donauauen.at/?area=nationalpark&language=english
Partner organisations
Parent multi-site project

Case_study:National Park Danube-Auen

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Project summary

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Another milestone in revitalization for via donau in 2009: completion of construction of a riverbank restoration project at Witzelsdorf in the Donau-Auen National Park. The Witzelsdorf section of the river had been one of the most heavily built-up along the entire Danube. Thus ideal conditions prevailed here for a restoration aiming to improve the overall ecological situation: to encourage the momentum and formative power of the Danube and to initiate the natural development of the shore. Project measures included:

  • Removal of eight old groynes and field experiments involving novel, ecologically-optimized groyne structures
  • Lowering of existing retaining walls to 0.5 meters above the low navigable water level (LNWL)
  • Riverbank restoration on a stretch nearly two kilometres long between river kilometres 1891.7 and 1893.4 with preservation of bank revetments to just over LNWL in areas of strong currents.

Approximately 30,000 m3 stone material was removed from the banks and transported away by ship. The National Park provided professional support for this project in collaboration with the project team. The Witzelsdorf restoration project was co-financed by the Federal Ministry of Transport, Innovation and Technology (BMVIT) and the trans-European networks of the European Union. Meanwhile, the Danube has been busy forming her newly-won natural banks. The second riverbank restoration project in the Donau-Auen National Park is thus a veritable success story.

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Catchment and subcatchment

Catchment

River basin district Danube
River basin Danube

Subcatchment

River name Sava River
Area category more than 10000 km²
Area (km2)
Maximum altitude category 500 - 1000 m
Maximum altitude (m) 833833 m <br />0.833 km <br />83,300 cm <br />
Dominant geology Calcareous
Ecoregion Dinaric Western Balkan, Alps
Dominant land cover
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Other case studies in this subcatchment: Conservation of alluvial, Hainburg River Restoration, INTERREG MED WETNET - Memoradum on Participation in Wetland Conservation in Ljubljansko Barje Nature Park, Marsh protection in Egyek–Pusztakócs, National Park Danube-Auen, Regelsbrunner Aue, Renaturation of Stržen's riverbed on intermittent Cerknica Lake, The Bulgarian Wetlands Restoration and Pollution Reduction Project


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Reasons for river restoration

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