risk assessment Articles
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Matter-element model of integrated risk assessment for flood control systems
The matter-element model of integrated risk assessment for flood control systems is established with matter-element analysis theory and correlative function of extension set, on the basis of classification of flood situations and risk indexes of typical flood control works. By this model, quantitative indexes of integrated risk assessment can be derived for flood control systems on a basin or ...
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Semantic model for flood management
Risk assessment involves the study of vulnerability and hazards. When focused on flood events, such an analysis should evidently include the theoretical and practical study of floods and their behavior. Nevertheless, risk assessment is not useful if the results are not subsequently used for more effective management and planning by local authorities and qualified personnel. The risk evaluation ...
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What is a Flood Risk Assessment?
Flood Risk Assessments (FRA) are becoming a very important part of the planning permission process. It interlocks with other areas of the planning process, and could cause weeks or months of delays if not done from the beginning. But what is a Flood Risk Assessment? A Flood Risk Assessment is a series of tests that are carried out to assess the level of flood risk of a given location. The ...
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Development of priority setting process for the small stream restoration projects using multi criteria decision analysis
This study performed a flood risk assessment using one of the multi criteria decision-making methods to identify the small stream basins with high risk of flooding and to determine the optimal small stream restoration measures by priority ranking for flood risk. The 12 representative factors for the flood risk assessment were carefully selected and constructed for the three main aspects, such ...
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Decision Support Tools Management/ Operation
Floreto Floreto is a three-tier software application consisting of a User Interface, Functional Module and Database. It was developed for decision support in property level flood mitigation. As an outcome of the system, the mitigation scenarios for improvement of the built-on environment are obtained, based on the technically appropriate measures tailored to the users own property data and local ...
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Flood hazard maps
Flood hazard maps have to be developed for areas, which have been identified in the preliminary flood risk assessment. For certain flood frequencies the extent and the water depth, the flow velocity or the relevant water flow have to be mapped. Flood frequencies consider (2007/60/EC): floods with a low probability, or extreme event ...
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Methodology for qualitative urban flooding risk assessment
Pluvial or surface flooding can cause significant damage and disruption as it often affects highly urbanised areas. Therefore it is essential to accurately identify consequences and assess the risks associated with such phenomena. The aim of this study is to present the results and investigate the applicability of a qualitative flood risk assessment methodology in urban areas. This methodology ...
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Propositions for using risk acceptance criteria
Risk acceptance and tolerability criteria are tools that are used to evaluate and control risks. Although such criteria have been used for many years in different sectors of applications, their rationale and use are still being discussed. Three issues commonly addressed are: 1) the type and form of the criteria (e.g., general formulations compared to tailor-made criteria for specific ...
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Perception of risk of natural hazards: a hazard mitigation plan framework
A new approach is presented for policy makers to incorporate sociological aspects of human risk perception into their hazard mitigation plans. Previous methods for creating these plans generally used equivalent dollar losses from natural hazard events as the statistic by which to make decisions. Such an approach fails to take into consideration how people view natural hazards, possibly leading to ...
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An influence diagram for urban flood risk assessment through pluvial flood hazards under non-stationary conditions
Urban flooding introduces significant risk to society. Non-stationarity leads to increased uncertainty and this is challenging to include in actual decision-making. The primary objective of this study was to develop a risk assessment and decision support framework for pluvial urban flood risk under non-stationary conditions using an influence diagram (ID) which is a Bayesian network (BN) ...
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Flood risk management plans 1
Flood risk management plans (FRMPs) contain an approach for saving or improving flood protection within a river basin. They shall address all aspects of flood risk management focusing on prevention, protection and preparedness (EC 2007). FRMPs include the conclusion of the preliminary flood risk assessment, the flood hazard maps and flood risk maps. Furthermore they should contain: description ...
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Quantification of increased flood risk due to global climate change for urban river management planning
Global climate change is expected to affect future rainfall patterns. These changes should be taken into account when assessing future flooding risks. This study presents a method for quantifying the increase in flood risk caused by global climate change for use in urban flood risk management. Flood risk in this context is defined as the product of flood damage potential and the probability of ...
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Assessing global change when data are sparse
Natural disasters and large-scale industrial accidents are rare events having very low probability of occurrence. They may result in high consequences for society, the environment and the economy. Media reports often suggest that the occurrence and severity of such hazards is perceived to be changing. Change may be a consequence of global environmental changes such as global warming, tectonic and ...
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Method for consequence curves as applied to flood risks
This article summarises research intended to expand current study methodologies targeting flood risks with regard to specific issues and emergency preparedness requirements of municipalities. Various methods are currently available to predict the consequences of flooding risks. DOMINO is one such tool used to study flooding risks from natural events or from potential dam breaks. A complementary ...
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Urban flood risk assessment using sewer flooding databases
Sustainable water management is a global challenge for the 21st century. One key aspect remains protection against urban flooding. The main objective is to ensure or maintain an adequate level of service for all inhabitants. However, level of service is still difficult to assess and the high-risk locations difficult to identify. In this article, we propose a methodology, which (i) allows water ...
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A GIS-supported 3D approach for flood risk assessment of the Qu'Appelle River, Southern Saskatchewan
This research introduces a hybrid approach for flood risk assessment through GIS. The developed approach is based on the integration of hydraulic simulation and GIS analysis, which allows spatial-based visualisation and prediction of flood disaster. In particular, the Hydraulic Engineering Center River Analysis System (HEC-RAS) model is employed to simulate multi-scenario flood cases within a ...
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Performance measurement in humanitarian supply chains
Recent humanitarian disasters, such as the Asian tsunami and Katrina, have pointed out the importance of supply chain management in dealing with the complex emergency situations and risks that humanitarian organisations are faced with. Although performance measurement is known to be crucial for performance improvement, little insight exists in how effective performance indicators can be selected ...
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Losing memory – the risk of a major flood in the Paris region: Improving prevention policies
This paper provides a snapshot of the key findings of an Organisation for Economic Co-operation and Development (OECD) review of flood risk prevention policies in the Paris metropolitan area. With an innovative flood risk assessment, the study shows that a major flooding of the Seine River, similar to the flood disaster of 1910, could affect up to 5 million residents in the greater Paris area ...
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Methodology for risk assessment of flash flood events due to climate and land-use changes: application to the Llobregat basin
Global change, including climate, land-use and socio-economic changes, is expected to increase the stress on the entire water cycle. In the Mediterranean region, extreme events are likely to increase due to climate change. This work, framed in the EC Seventh Framework Programme project IMPRINTS, presents a methodology to obtain future flood risk maps using climate and land-use scenarios, ...
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Flood risk mapping and vulnerability analysis using GIS: empirical evidences from New Town area, Ondo, Ondo State, Nigeria
Spatial information technologies are changing the way in which decisions are taken in relation to the environment. Geographic information system (GIS) is one of such technologies that help to generate products useful in terrain analysis. In Nigeria, especially in the study area, floodplains and river corridors have been misused resulting in severe environmental hazards. Up-to-date information is ...
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