Effect of river training on flood retention of the Bavarian Danube

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Title:Effect of river training on flood retention of the Bavarian Danube
Creators:
Skublics, Daniel; daniel dot skublics at wwa-ro dot bayern dot de; Wasserwirtschaftsamt Rosenheim, Königstraße 19, 83022 Rosenheim, Germany.
Blöschl, Günter ; Institute of Hydraulic Engineering and Water Resources Management, Vienna University of Technology, Karlsplatz 13/222, A-1040 Vienna, Austria.
Rutschmann , Peter; Chair of Hydraulic Engineering and Water Resources Management, Technische Universität München, Arcisstraße 21, 80333 Munich, Germany.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 64, 4, pp. 349-356
Uncontrolled Keywords:flood retention, flood plain, flood management, hydrodynamic modelling

Abstract

The Bavarian Danube River has experienced numerous large flood events in recent years which make flood management an urgent matter. The propagation of flood waves along the river is heavily influenced by controlled and natural flood retention. Over the past centuries, natural flood retention areas were lost due to river training, and the hydraulic characteristics of the channel-flood plain system were modified. The purpose of this paper is to understand the effect of river training on the flood retention characteristics along the Bavarian Danube. Systematic two-dimensional hydrodynamic modelling shows that extreme floods are attenuated more strongly in the present state of the channel-flood plain system than they were historically. This is because the retention areas are filled later during the event, so the attenuation effect is much larger for the same magnitude of the retention volume. Natural flood retention is therefore not an effective management option for reducing extreme floods on the Bavarian Danube. Controlled flood retention measures provide a higher efficiency regarding peak attenuation to retention volume ratio. On the other hand, the delay of flood peaks due to natural retention may be beneficial for the superposition of the flood waves with contributions from downstream tributaries.

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Title:Effect of river training on flood retention of the Bavarian Danube
Translated title:Effect of river training on flood retention of the Bavarian Danube
Creators:
Skublics, Daniel; daniel dot skublics at wwa-ro dot bayern dot de; Wasserwirtschaftsamt Rosenheim, Königstraße 19, 83022 Rosenheim, Germany.
Blöschl, Günter ; Institute of Hydraulic Engineering and Water Resources Management, Vienna University of Technology, Karlsplatz 13/222, A-1040 Vienna, Austria.
Rutschmann , Peter; Chair of Hydraulic Engineering and Water Resources Management, Technische Universität München, Arcisstraße 21, 80333 Munich, Germany.
Uncontrolled Keywords:flood retention, flood plain, flood management, hydrodynamic modelling
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:64
Number:4
Page Range:pp. 349-356
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8677
Item Type:Article
Deposited On:10 Nov 2016 17:47
Last Modified:10 Nov 2016 16:47

Citation

Skublics, Daniel; Blöschl, Günter; Rutschmann , Peter (2016) Effect of river training on flood retention of the Bavarian Danube. Journal of Hydrology and Hydromechanics, 64 (4). pp. 349-356. ISSN 0042-790X

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