Case study:Austria cross-border section - River widening measure Gosdorf I (Interreg IIIa Project "Maßnahmen Unteres Murtal" 2002-2007)
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Project overview
| Status | Complete |
|---|---|
| Project web site | http://http://www.unteresmurtal.steiermark.at/ |
| 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 |
Project summary
In Gosdorf along a 1,000 m long and 150 m wide stretch, the Mur restored natural riverbed structures such as side-arms, undercut and slip-off slope banks, gravel banks, potholes and fords. Optimal conditions were created for the development of a natural river, bank and alluvial forest areas. The gravel carried in by floodwater stabilises the bed of the river Mur and thus, the ground water level. The construction of a side-arm and the tipping of the excavation material into the river Mur (in total: 150,000 m³) have speeded up the developments described above.
During the construction work threatened species already started to inhabit the new structures: The Nose Carp, a rheophile (current-loving) fish, spawned in the side-arm, Sand Martins were able to utilise an undercut bank for their nesting tunnels while Common Sand Pipers nested on the newly-formed gravel banks. In future also new structures with their typical natural colonisations will be formed again in harmony with the flow conditions of the river Mur, due to the renaturation of extreme and deficient locations. Within the next years, further 750,000 m³ of gravel may be mobilised by dynamic riverbed erosion during higher water flow of the river Mur. Thus, the gravel, which is missing in the cross-border catchment, will be compensated and thereby contribute to the stabilisation of the riverbed and the groundwater balance.
At the location of the river widening an observation tower offers the chance to take a bird´s eye view of the entire restored area at a glance. Step by step, the visitor may range over the individual “storeys” of the alluvial forest.
GerambRose 2010: The measure river widening Gosdorf of the project Interreg IIIa Project "Maßnahmen Unteres Murtal" 2002-2007 was awarded on 17.09.2010 with the GerambRose. The GerambRose is awarded in Styria in appreciation for services that maintain or create high-quality architecture. Neither the owner, the designer nor the performers, but their collective effort, the building, is the focus point of the price. The theme of the GerambRose 2010 was dedicated to the "public spaces". Together with the river widening Weyern (Upper Mur) and Schladming (Enns) a prize was awarded.
Monitoring surveys and results
Lessons learnt
Image gallery
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Catchment and subcatchment
Site
Project background
Cost for project phases
Reasons for river restoration
Measures
MonitoringHydromorphological quality elements
Biological quality elements
Physico-chemical quality elements
Any other monitoring, e.g. social, economic
Monitoring documents
Additional documents and videos
Additional links and references
Supplementary InformationEdit Supplementary Information
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