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Flood type specific construction of synthetic design hydrographs
Univ Zurich, Dept Geog, Zurich, Switzerland.;Univ Grenoble Alpes, Grenoble INP, Grenoble, France..
Univ Zurich, Dept Geog, Zurich, Switzerland.;Belop GmbH, Sarnen, Switzerland..
Univ Zurich, Dept Geog, Zurich, Switzerland.;Warsaw Univ Life Sci, Dept Hydraul Engn, Warsaw, Poland..
Compagnie Natl Rhone, Lyon, France..
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2017 (English)In: Water resources research, ISSN 0043-1397, E-ISSN 1944-7973, Vol. 53, no 2, p. 1390-1406Article in journal (Refereed) Published
Abstract [en]

Accurate estimates of flood peaks, corresponding volumes, and hydrographs are required to design safe and cost-effective hydraulic structures. In this paper, we propose a statistical approach for the estimation of the design variables peak and volume by constructing synthetic design hydrographs for different flood types such as flash-floods, short-rain floods, long-rain floods, and rain-on-snow floods. Our approach relies on the fitting of probability density functions to observed flood hydrographs of a certain flood type and accounts for the dependence between peak discharge and flood volume. It makes use of the statistical information contained in the data and retains the process information of the flood type. The method was tested based on data from 39 mesoscale catchments in Switzerland and provides catchment specific and flood type specific synthetic design hydrographs for all of these catchments. We demonstrate that flood type specific synthetic design hydrographs are meaningful in flood-risk management when combined with knowledge on the seasonality and the frequency of different flood types.

Place, publisher, year, edition, pages
AMER GEOPHYSICAL UNION , 2017. Vol. 53, no 2, p. 1390-1406
National Category
Oceanography, Hydrology and Water Resources
Identifiers
URN: urn:nbn:se:uu:diva-320929DOI: 10.1002/2016WR019535ISI: 000398568800021OAI: oai:DiVA.org:uu-320929DiVA, id: diva2:1091598
Available from: 2017-04-27 Created: 2017-04-27 Last updated: 2018-01-13Bibliographically approved

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Seibert, Jan

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