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Geophysical Monograph Series

 

Keywords

  • channel incision
  • sediment budget
  • riverbed widening
  • sediment transport modeling
  • monitoring
  • Mur River

Index Terms

  • 1825 Hydrology: Geomorphology: fluvial
  • 1815 Hydrology: Erosion
  • 1204 Geodesy and Gravity: Control surveys
  • 1847 Hydrology: Modeling

Article

GEOPHYSICAL MONOGRAPH SERIES, VOL. 194, PP. 319-336, 2011

Mitigating Channel Incision via Sediment Input and Self-Initiated Riverbank Erosion at the Mur River, Austria

M. Klösch, R. Hornich, N. Baumann, G. Puchner, and H. Habersack

At the border reach 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 riverbed breakthrough, 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 sidearm 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. At least for the present, short-term development, the measure effectively mitigated the incision.

Citation: Klösch, M., R. Hornich, N. Baumann, G. Puchner, and H. Habersack (2011), Mitigating channel incision via sediment input and self-initiated riverbank erosion at the Mur River, Austria, in Stream Restoration in Dynamic Fluvial Systems: Scientific Approaches, Analyses, and Tools, Geophys. Monogr. Ser., vol. 194, edited by A. Simon, S. J. Bennett and J. M. Castro, pp. 319–336, AGU, Washington, D. C., doi:10.1029/2010GM000977.

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