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

{{Case study status
|Approval status=Draft
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{{Location
|Location=47.202694859860166, 14.579771518838243
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{{Project overview
|Status=Complete
|Project web site url=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 id=9984
|Contact organisation=freiland Environmental Consulting Civil Engineers Ltd.
|Contact organisation url=www.freiland.at
|Multi-site=No
|Project summary=In the St. Peterer Au a side-arm was built in 2004 initially. Due to the flood in September 2005 a 30m long and 60m deep erosion scar arose downstream of the inflow building for the side-arm. In the course of the project "Murerleben I" a large part of the inner arc between the newly created side-arm and the Mur was taken into the public water property. This allowed preserving the natural structures caused by the flood instead of restoring the state before the flood. On the opposite bank, the bank protection was partially removed on 500 m. This facilitates the development of natural waters and shoreline structures also on the left bank. Two reactivated tributaries, 600 m and 200 m long, offer valuable habitats especially for young and standing water fish. On up to 5 ha alluvial forest can develop. Two alluvial basins offer a new habitat for amphibians.

In the follow-up project "muerlerben II" the measure is widened extensively. A few meters upstream a 250 m long side-arm is constructed and a tributary stream is revitalised. Downstream of the existing measure both on the left and on the right bank two side-arms with a total length of 850 m are created.
In addition to promoting the dynamic development of the river bed, 4.5 ha of alluvial forest are initiated and 4,000 m² of alluvial basins are created. 
Thus, the alluvial management Thalheim - St. Peter / Judenburg evolves to a set of measures, which facilitates a structurally rich watercourse of 3.0 km. The entire measure covers an area of around 9.3 ha. 
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|File name=Pic 05 murerlebenI StPeterAu Aerial View.jpg
|Caption=River widening St. Peter Au - Aerial view 2006 (LIFE+ (LIFE+ 08 NAT A 614) „Inner-Alpine river basin management – Upper River Mur - murerleben II" 2010-2015) ©freiland
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{{Case study image
|File name=StPeterAu 2013.JPG
|Caption=River widening St. Peter Au - Distributary 2013 (LIFE+ (LIFE+ 08 NAT A 614) „Inner-Alpine river basin management – Upper River Mur - murerleben II" 2010-2015) ©freiland
}}
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