Flood Risk and Flood Management

Lecturer (assistant)
  • Karl Broich
  • Alexander Gerner
Number0000001388
Type
Duration4 SWS
TermSommersemester 2023
Language of instructionEnglish
Position within curriculaSee TUMonline
DatesSee TUMonline

Dates

Admission information

Objectives

At the end of the module, students are able to: • understand the fundamental concepts of flood risk management as well as the social and legal aspects, • carry out methods of hydrological modelling of floods, • understand methods for flood damage estimation and assessment of flood risk, • evaluate the efficiency of flood protection measures and suggest optimal protection strategies, • analyze uncertainty and sensitivity of the results. • handle MATLAB in the thematic context of flood risk and flood management • set the theoretical and mathematical concepts in practice in MATLAB. • understand and use the water balance model LARSIM for flood forecasts and river basin modelling

Description

This module is co-organized by the Chair of Hydrology and River Basin Management and by the Engineering Risk Analysis (ERA) Group. First the general motivation of flood risk management (FRM), the social and political framework of FRM as well as tools and models for the hydrologic/hydraulic modelling of the flood events are provided by the Chair of Hydrology (see Study goals 1&2). Also different strategies and measures of technical and decentral flood protection are included. In the second part of the course, quantitative methods for analyzing the flood damage and flood risk and for risk-based evaluation/optimization of the flood protection measures (sees Study goals 3-5) are presented by the ERA group. The accompanying exercises will provide brief summary of programming in MATLAB and the students will learn how to implement the theory explained in the lectures on simple but realistic examples using Matlab and the water balance model LARSIM, which is used wide spread in Middle Europe for flood forecasts. Chair of Hydrology and River Basin Management: lecture • Safety, security, and risk • The risk management cycle • Qualitative and quantitative methods for flood risk assessment • Planning of flood protection measures: determination of design values • Flood frequency statistic base on gauged data • Contents and significance of the EU directive on the assessment and management of flood risks • Overview of technical and decentral flood protection measures • Failure of flood protection measures • Flood hazard scenarios • Risk and risk acceptance: Communication of risks and legal aspects. Chair of Hydrology and River Basin Management: exercise • HEC-HMS / HEC-RAS: Understanding and dealing with the hydrolocic an and hydrodynamic moeling for river basin and inundation modeling. Quantitative risk assessment (ERA): lecture and exercise • Decision-making, risk acceptance, optimization of mitigation measures • Flood damage assessment • Risk quantification • Uncertainty quantification, sensitivity analysis • Issues of long-term planning: non-stationarity, adaptability

Prerequisites

(Recommended) requirements: Fundamentals of hydrology (e.g. Grundmodul Hydrologie, bachelor program Umweltingenieurwesen,. TUM) Fundamentals of probability theory and risk analysis (e.g.Umweltmonitoring und Risikomanagement, bachelor program Umweltingenieurwesen,. TUM) Fundamentals of programming in Matlab

Teaching and learning methods

The module consists of lectures with exercises (4 SWS), • The lectures’ contents are presented by the lecturer using the blackboard and digital slides. The students are incented to study the suggested literature and delve into the subject. • During the exercises, the students independently solve practical examples and learn programming skills in MATLAB and LARSIM (Computer). The students work in groups and/or by him/herself. • Two assignments test the achievement of the study goals and competences based on more extensive case studies. The assignments are a group work and they are to be presented in a written report by each group. Peer-Review mechanisms ensure feedback from supervisors as well as students. • recently developed course materials of a MOOC (Massive Open Online Course) in the platform edX will be included in the module as well.

Examination

The examination is a written exam of 120 min. The students will show their achievement of the study goals during the exam. The exam tasks are divided into two categories: approx.. 60 % of the questions will test the knowledge and understanding of the concepts of flood risk management and flood modelling. The remaining 40 % will test the ability of the students to understand and apply the quantitative methods for assessing damage and risk, for evaluation of the efficiency of flood protection measures and for sensitivity analysis. Students can use a calculator (non programmable), all equations necessary for the calculations will be handed out.

Recommended literature

The documents and resources listed below are some examples for your interest: - Flood Manager E-Learning (TU Hamburg-Harburg): http://daad.wb.tu-harburg.de/homepage/ - Merz, B., J. Hall, M. Disse, and A. Schumann. “Fluvial Flood Risk Management in a Changing World.” Natural Hazards and Earth System Science 10, no. 3 (March 16, 2010): 509–527. doi:10.5194/nhess-10-509-2010. - Rogger, M., Kohl, B., Pirkl, H., Viglione, A., Komma, J., Kirnbauer, R., Merz, R., Blöschl, G., 2012. Runoff models and flood frequency statistics for design flood estimation in Austria – Do they tell a consistent story? J. Hydrol. 456–457, 30–43.^ - Bründl, M., Romang, H.E., Bischof, N., Rheinberger, C.M., 2009. The risk concept and its application in natural hazard risk management in Switzerland. Nat. Hazards Earth Syst. Sci. 9, 801–813. - Pianosi, F., Wagener, T., Rougier, J., Freer, J., Hall, J., 2014. Sensitivity Analysis of Environmental Models: A Systematic Review with Practical Workflow, in: Vulnerability, Uncertainty, and Risk. American Society of Civil Engineers, pp. 290–299.

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