A new approach for computing a flood vulnerability index using cluster analysis. May 2017 4 a report by sayers and partners llp environment agency flood warnings are only available in english, and so groups of residents with no or insufficient english language skills will find them more difficult to access shaw et al. This study adopted a flood vulnerability index fvi to assess the flood vulnerability of ten villages in mai hoa commune, a mountainous community living along gianh river in tuyen hoa district, quang binh province. Reducing the complexity of the flood vulnerability index. The current flood vulnerability index fvi methodology developed by the authors uses 71 indicators in its calculation. The checklist presented here is an amended version of the checklist. This report is a summary of the hazus results for flood scenarios modeled along seven major rivers in nevada. It was produced in conjunction with the updating of the state of nevada enhanced hazard mitigation plan, 2018. The research took place in the city of mexicali, baja, california. Updated assessment of risks and vulnerability to flood.
Flood vulnerability factors water resource systems are vulnerable to floods due to three main factors. There is a need to identify the risk of flooding in flood prone areas to support decisions for flood management from. The notion to vulnerability has changed over the last 20 years. A methodology for flood susceptibility and vulnerability. Floods are highly relevant extreme events with increasing frequency at a global scale. Therefore the responsible authorities should provide timely and reliable flood warning, flood. Introduction the frequency and severity with which flood disasters occur is on the increase in many regions of the world figure, 1. Review of case studies and implications for measurement. However, it is recognized that some of these indicators may be redundant or. Vulnerability there is a relationship between exposure to a flood h azard, risk the next topic of this chapter, and vulnerability. The flood ris ks will likely increases in frequency and magnitude due to global and regional climate change.
Fiji faces significant development challenges, and the government has set ambitious. I map vulnerability scores and highlight those municipalities with high vulnerability, high flood hazard and high flood exposure, to determine the size of the population at risk. Vulnerability is multidimensional economic, social, demographic, politicalinstitutional and psychological that affect peoples susceptibility to environmental hazard and is influenced by a number of factors, at different levels from the local to the global. Flood vulnerability and risk maps in taipei city, taiwan.
Flood vulnerability in bangladesh tufts university. In this work, i draw on an established vulnerability index framework to construct a vulnerability index for urban brazilian municipalities. A remote sensing and gis approach for warning, mitigation and management sneh gangwar. Flood vulnerability can be displayed with a vulnerability score for its separate factors or as a combined flood vulnerability index. The flood vulnerability indicators, which are grouped into exposure, susceptibility, and resilience, were identified given the previous studies on fvi elsewhere and in consultation. Postfire flood vulnerability maps malibu, ca official. This study focuses on an approach to assess flood vulnerability as a planning tool using an integrated flood vulnerability index fvi with variables that are accessible in developing countries and arid urban areas. Appl ying the flood vulnerability index as a knowledge base for flood risk assess ment, delft university. Vulnerability index, hazard, human security index, disaster, risk, coping capacity. Thesis, unescoihe institute for water education netherlands. According to fema, properties outside of highrisk flood areas account for over 20% of national flood insurance program nfip claims and onethird of disaster assistance for flooding.
Watsonafter the rainlearning the lessons from flood recovery in hull, final project report for flood, vulnerability and urban resilience. An interactive arggis online web platform was created to assess vulnerability to and risk for flooding based on a variety of variables including a social vulnerability index, flood plains, and critical health care infrastructure. Analysis of applicability of flood vulnerability index in. The flood vulnerability index is a method to assess flood vulnerability based on. Checklist for vulnerability of floodprone sites and buildings t he checklist for vulnerability of floodprone sites and building can be used to assess sitespecific flood hazards and building vulnerability. Addition of a vulnerability component to the flash flood. Author links open overlay panel paulo fernandez a d sandra mourato b d madalena moreira c d luisa pereira e f.
Development of the residential structure flood vulnerability functions shall be based on at least one of the following. This study is concerned with flood risk that can be assessed by integrating gis, hydraulic modelling and required field information. The contributing percentage for the factors are mean annual rainfall 20%, slope 20%, landuse 20%, relief 15%, drainage density. These factors consist of indicators which assess different characteristics of vulnerability. Pdf reducing the complexity of the flood vulnerability index. Vf1 derivation of residential structure flood vulnerability functions a. Balica sf 2012 applying the flood vulnerability index as a knowledge base for flood risk assessment, ph. Its effectiveness depends on the level of preparedness and correct response. The previous indexes identified four main social, economic. Pdf towards an integrated flood vulnerability index a. Applying the flood vulnerability index as a knowledge base for flood risk assessment.
The index is designed to combine the ease of application of geomorphological indexes with a simplified, but physically sounding. A physical vulnerability index pvi for dynamic flooding is computed which can be used for a variety of processes without distinguishing between different torrential hazards flash flood, hyper. The country has an area of 18,000 km spread over 332 islands, of which about 110 are inhabited. Vulnerability is considered in the study of flood vulnerability index fvi as the extent of harm, which can be expected under certain conditions of exposure, susceptibility and resilience why flood vulnerability index. District 1 vulnerability assessment page 7 table 1. Vulnerability flood vulnerability index fvi unescoihe. Pdf flood vulnerability index as a knowledge base for.
This paper presents a flood hazard vulnerability index that incorporates socioeconomic, built environment and natural environment data, and that was used to measure the vulnerability of 1,276 municipalities in brazil. Implementing a flood vulnerability index in urban coastal. Nigeria is no exception as in 2012, it experienced an unprecedented flood disaster that affected half. Flood vulnerability index as a knowledge base for flood. Composite indicators as decision support method for flood analysis. Best practices on flood prevention, protection and mitigation 3 flood forecasting and warning is a prerequisite for successful mitigation of flood damage. Flood tends to have an important impact on isolated and poor regions such as oasis regions.
A key to informed decision making on risk management and risk transfer insurance is an accurate assessment of risk. Flash flood vulnerability and adaptation assessment pilot. If you are unable to see the pdf link please follow the direct links to the pdf available on all issue table of contents pages and latest articles listing pages. Flood vulnerability factors flood vulnerability index. Description and summary of metrics used to quantify flood vulnerability. Dissertation submitted in fulfillment of the requirements of the board for doctorates of delft university of technology and of the academic board of the unescoihe. Identify vulnerabilities using the building vulnerability assessment checklist. Findings show that 83 of these municipalities with 22 per cent of the brazilian population are at risk. Vulnerability is the degree to which a system or unit is likely to experience harm due to exposure to perturbations or stress. This is because the flood vulnerability class progression in the model coincide with the areas of observable impact as earlier visited on the field when compared with the model. Flood vulnerability in bangladesh nazifa noor sarawat 187 geographic information systems 15 ecember 2015 introduction ata and methods i created a flood vulnerability index to map the regions of bangladesh that are most vulnerable to flood by weighted raster addition of elevation, precipitation, proximity to water bodies, and past flood.
Flood vulnerability consists of the three factors exposure, susceptibility and resilience. Unescoihe phd thesis crc press book floods are one of the most common and widely distributed natural risks to life and property worldwide. The ride quality index value at the sump lowest point of the roadway segment pavement that is in poor condition. Flood vulnerability indices at varying spatial scales. They remain among the most dangerous and complex natural disasters in. In doing so, a neighbourhood flood vulnerability index nfvi is introduced and used to compare risks between more and less flood vulnerable neighbourhoods where vulnerability is. Ever since the first publication of the integrated flood management concept paper in 2003, it has. Flood vulnerability index as a knowledge base for flood risk assessment in urban area hajar nasiri1 and shahram shahmohammadikalalagh2 1 urban planning and design department, design and architecture faculty, university putra malaysia 2 department of water sciences and engineering, east azarbaijan science and research branch,islamic. In the context of this report, flood risk refers to the magnitude of economic flood loss and the probability that losses of that magnitude will occur. We are currently experiencing intermittent display of pdf links on some article pages.
The program has also worked on a flood vulnerability and a risk map. Flood vulnerability assessment on a commune level in vietnam. Assessing urban vulnerability to flood hazard in brazilian. Department of environmental sciences, faculty of sciences semlalia, cadi ayyad. Checklist for vulnerability of floodprone sites and. This guidance on flood risk and coastal change will help local planning authorities in the. Understand that an identified vulnerability may indicate that an asset. Disadvantageous flood plain management makes people living on floodplains more vulnerable to floods. Understanding each concept and considering certain indicators may help to characterize the vulnerability of different systems, by.
Analysis of vulnerability to flood disaster in kano. Most of the population lives on two large islands, viti levu and vanua levu. Unit objectives explain what constitutes a vulnerability. Flood hazard, vulnerability and risk assessment for. A critical point in flood risk assessment is that while flood hazard is the same for a given area in terms of intensity, the risk could be different depending on a set of conditions flood vulnerability. Vulnerability is the measure of the capacity to weather, resist, or recover from the impacts of a hazard in the long term as well as the short term. Checklist for vulnerability of flood prone sites and buildings t he checklist for vulnerability of flood prone sites and building can be used to assess sitespecific flood hazards and building vulnerability. Continuous improvements and changes, investigative and managerial practices, namely the planning instances of city institutions, need to be equipped.
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