Case study:Austria Upper Mur - River widening Lässer Au (LIFE+ (LIFE+ 08 NAT A 614) Inner-Alpine river basin management – Upper River Mur - murerleben II 2010-2015)

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Location: 47° 12' 9", 14° 50' 43"
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Project overview

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Status Complete
Project web site http://www.murerleben.at/index.asp?pg_nr=60460&lang=en
Themes Environmental flows and water resources, Habitat and biodiversity, Hydromorphology
Country Austria
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

Case study:Austria Upper Mur - LIFE+ (LIFE+ 08 NAT A 614) „Inner-Alpine river basin management – Upper River Mur - murerleben II" 2010-2015

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Project summary

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One of the goals of the Upper Mur is the recovery of habitats, which went lost to a large extent through the regulation of the Mur. The widening Lässer Au therefore aims - together with the measures implemented in Weyern and Apfelberg - at providing a contiguous, rich structured water course and alluvial areas.

For the dynamic development of the river Mur, the existing bank protection has been removed on the left bank and a 900 meter long structured side-arm with two inflow areas has been created. In addition, amphibian basins were built with a total area of more than 4,000 m² and 8 ha of alluvial forest areas have been secured or re-initiated.

In the Lässer Au riparian zones with deadwood from rhizomes were designed. Deadwood in the water not only increases the biodiversity of small animals in the water, but also is of use for the fish, as they discover valuable habitats between the branches. Through the implementation of new measures in the context of the first LIFE project large contiguous water courses and alluvial forests are created or preserved. Especially species, which require different living conditions depending on the season or their development, benefit from the newly created habitats.

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Image gallery


2013 River widening Lässer Au (LIFE+ (LIFE+ 08 NAT A 614) „Inner-Alpine river basin management – Upper River Mur - murerleben II" 2010-2015) © freiland - Christine Konradi
2013 River widening Lässer Au (LIFE+ (LIFE+ 08 NAT A 614) „Inner-Alpine river basin management – Upper River Mur - murerleben II" 2010-2015) © zepp-cam
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Catchment and subcatchment



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Reasons for river restoration

Mitigation of a pressure
Hydromorphology Channel pattern/planform
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Measures

Structural measures
Bank/bed modifications Removal of bank reinforcements, Restoration of the connection of side arms
Floodplain / River corridor
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Monitoring

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Supplementary Information

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