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Quantifying resilience in hydraulic engineering: Floods, flood records, and resilience in urban areas

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Abstract The design of safe structures and installations is an important issue in hydraulic engineering. In this context, the question arises whether the concept of resilience can provide additional information compared with the (semi‐) probabilistic or risk‐based analysis to improve the results of the design procedure. In this paper, the integration of resilience aspects into the design is discussed on three levels: First the consideration of resilience as a characteristic of the structure and its members, secondly as a set of multicriterial indicators and thirdly as a numerical value. To illustrate the three resilience approaches three examples are discussed: the qualitative selection of components, reassessment of urban flood resilience on the basis of updated historical flood records and the comparison of resilience values for different hydraulic structures. Considerations on the quantitative description of the resilience of hydraulic structures in flood‐prone areas are presented and should open the way to further discussions about the quantification of resilience terms. This article is categorized under: Engineering Water > Methods Engineering Water > Planning Water Science of Water > Water Extremes
Loads that go beyond the design assumptions and a tiered approach to the possible dam failure. Examples of flood exposure. BHQ is the design flood for two design situations (Pohl 2016)
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“Perceived” flood awareness graph: Flood events of the last 130 years in the mountain region (Erzgebirge—Ore Mountains) southwest of Dresden, Germany (estimated graph to be verified by empirical sociological investigations). The red bars mark technical (providing flood storage areas and reservoirs) and nonstructural (analysis, improvement of forecast) mitigation measures
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Emergency management life cycle and timeline with different levels of resilience
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Situation of a city in relation to the river and development of relevant vulnerability‐, risk‐, and resilience‐related criteria in the past
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Development of the Elbe River in Dresden during the last millennium: city and river; right top: Situation in the city center 1845 before river training measures; right down: 2006—red dotted line = old riverbank, blue dotted line = bank nowadays
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Linear trends of partial series of annual peak discharges over a period of 30 years (black lines) and 50 years (orange lines) respectively and human‐made influences
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Inundation maps for the Elbe River in the city of Dresden. Top: 1845, middle: 2002 (www.dresden.de), bottom: own hydro‐numerical calculation with a DTM for 1845 (see also Kirsch & Pohl, ). The color scale in the lower map indicates the water‐/inundation depth. The actual discharge for historical events such as 1845 was determined by comparing the inundated areas when adjusting the discharges
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Science of Water > Water Extremes
Engineering Water > Planning Water
Engineering Water > Methods

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