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Area-wide prediction of specific flood flows in Sachsen, Germany

Project Leader
Laaha Gregor, BOKU Project Leader
Type of Research
Applied Research
Project partners
Vienna University of Technology, Institute of Hydraulic Engineering, Karlsplatz 13, 1040 Wien, Austria.
Contact person: Ralf Merz;
Function of the Project Partner: Koordinator
BOKU Research Units
Institute of Statistics
Funded by
Institut für Wasserbau und Ingenieurhydrologie, Technische Universität Wien , Karlsplatz 13 / 222-2, 1040 Wien, Austria
A procedure for estimating extreme river flood flows for the German federal state Sachsen is developed. For predicting flood flows at ungauged sites, two regionalisation methods (Index-Flood-Method and Top-kriging) are compared by cross-validation. One basis of regional frequency analysis is the delineation of flood-homogeneous regions. In the BOKU-coordinated project part, two statistical classification techniques (cluster-analysis and regression trees) are applied to the data set. The relative performances are compared by statistical measures and expert evaluation. For the ultimate purpose of regionalisation, i.e. predicting at ungauged sites, a classification rule (e.g. classification trees or discriminant analysis) is established to allocate catchments to homogeneous regions.
hydrography; hydrology; water management; geographic information systems (GIS); Technical statistics;
frequancy analysis; flood; regionalisation; environmental statistics;

Laaha, G; Salinas, JL; Blöschl, G (2013): Exploring the link between spatial hydrologic variability and catchment similarity for the purpose of regionalisation.
[European Geosciences Union EGU General Assembly 2013, Vienna, Austria, 07.04.2013 - 12.04.2013]

, Geophysical Research Abstracts, Vol. 15

Salinas, JM; Merz, R; Laaha, G; Walther, J; and U. Buettner (2012): Performance of combined regionalization methods in Saxony, Germany. [Poster]
[European Geosciences Union EGU General Assembly 2012, Vienna, Austria, 22.04.2012 - 27.04.2012]

In: European Geosciences Union, Geophysical Research Abstracts Vol. 14, EGU2012-12943

Salinas, J.L., Merz, R., Laaha, G., Walther, J., Büttner, U. (2011): Comparison and combination of flood regionalisation methods in Saxony, Germany.
[EGU Leonardo Conference Series on the Hydrological Cycle 2011 - Floods in 3D: Processes, Patterns, Predictions, Bratislava, Slovak Republic, 23.11.2011 - 25.11.2011]

In: Szolgay, J., Floods in 3D: Processes, patterns, predictions

Walther, J., Merz, R., Laaha, G., Büttner, U. (2011): Regionalisierung von Hochwasserabflüssen in Sachsen.
[Tag der Hydrologie 2011 - Hydrologie & Wasserwirtschaft - von der Theorie zur Praxis, Vienna, Austria, 24.03.2011 - 25.03.2011]

In: Günter Blöschl und Ralf Merz (Eds), Hydrologie & Wasserwirtschaft - von der Theorie zur Praxis., Forum für Hydrologie und Wasserbewirtschaftung, Heft 30.11, 29-35.; ISBN: 978-3-941897-7

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