Malaysia is frequently affected by the annual flooding event caused by the seasonal monsoon which accounts for significant losses. An overview to flood vulnerability assessment methods pdf. Flood disaster management emergency management flood. Flood vulnerability assessment of ibadan city, oyo state. Mitigation of flood hazards can be attempted in two main ways.
Economic estimates of flood damages rely on depthdamage functions that are inadequately verified. Data on flood hazard maps in pdf format are consistent with the data layers on integrated flood hazard maps in shp format, published on the. The indicatorbased approach is primarily practiced from a policy point of view through the use of composite indicators. Pdf populations around the world are vulnerable to natural disasters. In this study, the flood vulnerability index is significantly sensitive to susceptibility and flood resilience variables. Communitybased flood vulnerability index for urban flooding. Alternatively, you can also download the pdf file directly to your computer, from where it can be opened using a pdf reader.
Assessment of flood hazard and flood risk maps member state report. Flood vulnerability, local perception and gender role. 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. One of the most significant aims of flood vulnerability assessment is to make a clear association between the theoretical conceptions of flood vulnerability and the daily administrative process. The annual occurrence of the flood hazard has forced residents to prepare beforehand to help them spring back to their daily life faster. There is therefore a need for a readily calculated and easily understood method to calculate flood vulnerability in such areas. Key conclusions are that all attempts to devise vulnerability indices for flood risk must begin by identifying the purpose of the index and for vulnerability indices to be useful, there must be an underlying conceptual model, a fixed set of tested indicators, and existing data that can be easily updated. Flood vulnerability mapping of lokoja metropolis using.
Communitybased flood vulnerability index for urban. A flood vulnerability index for coastal cities and its use. Click the details tab to display map tips, which explain how to explore the map. It is interesting to note that flood vulnerability index remains low in spite that the exposure indicators are high. Applying the flood vulnerability index as a knowledge base for flood risk assessment. Pdf flood vulnerability index as a knowledge base for. Flood impacts and social vulnerability are substantial threats for the sustainable development of the developing world. The population located along mono river in the yoto district faces great challenges in terms of repeated flood disasters in recent years. Floods are defined as the temporary flooding of land that is not.
Flood vulnerability assessment for critical facilities u. Medical vulnerability index medvi, hazards vulnerability hazvi index and community resilience index 2014 users guide use cases 2 exploring vulnerabilities and hazards. A comparison between new orleans flood vulnerability assessment tools and globally applicable vulnerability indices. Such disasters are occurring with increased frequency as a consequence of socioeconomic. Flood vulnerability in bangladesh tufts university. Analysis of applicability of flood vulnerability index in. Effect of local context on flood vulnerability identification. Click the map legend tab to display and interact with the layers comprising the map for the selected year. In the present study, a riskvulnerability analysis to flood is performed.
Flood disaster management free download as word doc. An information system for riskvulnerability assessment to. In fact, the improvement in assessment methods is related to the necessity for enhanced decisionmaking procedures. The low fvi can be attributed to the communitys high resilience in its coping and adaptation strategies. This report was produced under united states agency for international development usaid cooperative agreement no. Raster file the who eatlas of disaster risk for the african region volume 1. An engineering approach, to control flooding, and a regulatory approach designed to decrease vulnerability to flooding. Appl ying the flood vulnerability index as a knowledge base for flood risk assess ment, delft university.
Urban settlements vulnerability to flood risks in african. Understanding urban flood vulnerability and resilience. Its effectiveness depends on the level of preparedness and correct response. An assessment of flood vulnerability and adaptation. The lower accuracy of the flood hazard assessment model is attributed to the. Pdf climate change leads to increasing urban flooding hazard. Flood occurrences are on the increase all over the world and large numbers of people are constantly exposed to the risk associated with these disasters. 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. In order to help guide such policy decisions, a method for assessing flood vulnerability due to climate change is proposed. Quantitative assessment of vulnerability to flood hazards. The poor residents flood vulnerability is as a result of social processes and underlying causes. This guidance on flood risk and coastal change will help local planning authorities in the. The contributing percentage for the factors are mean annual rainfall 20%, slope 20%, landuse 20%, relief 15%, drainage density.
This proposed flood vulnerability assessment framework exemplifies how urban settlements in typical african cities interact with natural and humaninduced hazards which could cause disasters such as urban floods that are likely to affect vulnerable urban poor residents blaikie et al. The climate and ocean risk vulnerability index figure 3. Primary data were used to achieve the objective of this study. Indicators included in the wisconsin heat vulnerability index. The indicators used show the variables affecting the flood vulnerability in the pre saharan region.
Best practices on flood prevention, protection and mitigation 3 flood forecasting and warning is a prerequisite for successful mitigation of flood damage. 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. Rates are estimated based on the november 2015 fema nfip rate guidance. Flood vulnerability indices at varying spatial scales. This study focuses on some particular points of flood impacts and the local concept towards existing management capacity. To download the pdf, click the download link below. The flood risk in the developed model is defined by a dimensionless magnitude called as risk score between 0 and 100 for each zone of the area under assessment by calculating and combining of two newly defined factors. Channel modifications as discussed above, channelization. Scribd is the worlds largest social reading and publishing site.
The spatial distribution of the intensity level of the flood hazard index layer for benin at 1km. Vulnerability is the main construct in flood risk management. Pdf maps, whose code and data repository system used to the calculate. Computation of flood vulnerability index fvi different methodologies have been used to compute a flood vulnerability index fvi. In the united states, millions of people are repeatedly at risk of flooding and because this number will only continue to grow, the identification of the intersection of social vulnerability and physical risk to flood inundation is essential for both coastal planning. Vulnerability summary for the week of august 28, 2006 cisa.
Adequate geographic information on flood vulnerability is required to be able to prepare for flood disasters. The model was applied in a case study, the nowshahr flood in 2012. Construction of an integrated social vulnerability index in urban. Composite indicators can be built from very easy to very complex and sophisticated methods. Flood vulnerability index as a knowledge base for flood. Finally, high youth unemployment and unregulated settlement construction in atrisk areas reduce the capacity of castries to recover from extreme weather events, as unplanned settlements contribute to flood risk. Assessing biophysical and social vulnerability to natural hazards. Pdf flood vulnerability assessment as an essential part of the urban flood management is done by various methods by several researchers. The flood vulnerability index can be used by international river basin organisations to identify and develop action plans to deal with floods and flooding or on smaller scales to improve local decisionmaking processes by selecting measures to reduce vulnerability at local and regional levels.
Click the symbol in the upper left of the map to display the map details and legend. 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 assessment as an essential part of the urban flood management is done by various methods by several researchers. New insights into us flood vulnerability revealed from. The current flood vulnerability index fvi methodology developed by the authors uses 71 indicators in its calculation.
Pdf reducing the complexity of the flood vulnerability index. Managers of critical facilities can take this online assessment to identify their facilitys potential vulnerabilities to flooding. Developing an index model for flood risk assessment in the. Pdf the current flood vulnerability index fvi methodology developed by the authors uses 71 indicators in its calculation. Social vulnerability assessment for flood risk analysis mdpi. The geospatial research, analysis, and services program grasp created and maintains cdcs social vulnerability index.
Updated assessment of risks and vulnerability to flood. Our flood vulnerability index was comprised of a deterministic flood loss assessment using the federal emergency management agencys hazusmh multihazard loss estimation software, coupled. Pdf flood vulnerability indices at varying spatial scales. This study is aimed at mapping flood vulnerable areas within. Flood risk, exposure and damage potential are increasing, causing the level of poverty and vulnerability to rise. In this research we have attempted to measure vulnerability of the communities living in the flood prone area of khyber pukhtunkhwa province of pakistan. Vulnerability indices wisconsin department of health. Assessment of risks and vulnerability to flood hazards in nevada web only, updated by open file report 201801 updated assessment of risks and vulnerability to flood hazards in nevada updated by open file report 201801. Populations around the world are vulnerable to natural disasters. A detailed mapping of the social vulnerability index is generated at.
In this study, we developed a flood vulnerability index to help planners screen the relative flood vulnerability across the entire state of illinois at the county, jurisdictional, and census block scales. The results for each of the four flood scenarios show that the flood risk generated for s2 is the most similar to the base case s1, followed by s3 and s4. Flood insurance premium estimates are not a guarantee of actual rates. Recent flood disasters in the united kingdom 2007, 202014 storm surges, 2015 and 2017 have reminded us of societys increasing vulnerability, as flooding has far. Pdf flood vulnerability index as a knowledge base for flood risk. In this work, we build on earlier work on a flood vulnerability index in river basins balica et al. The program has also worked on a flood vulnerability and a risk map. There are several approaches to assess flood vulnerability as a proactive measure to reduce the risk of flooding. Flood vulnerability index fvi enables everyone to assess vulnerability to flood disaster at basin level.
This paper aims at assessing the conditions which influence flood damage in the study area by using indicators to compute a flood vulnerability index fvi. Here, the authors assessed flood vulnerability in the us and found that current depthdamage. However, it is recognized that some of these indicators may be redundant or. Flood vulnerability assessment for critical facilities even a slight chance of flooding can pose too great a threat to critical facilities and the services they provide to a community. Therefore the responsible authorities should provide timely and reliable flood warning, flood. One of those disaster risks is flooding which poses a serious challenge to. The pdf file you selected should load here if your web browser has a pdf reader plugin installed for example, a recent version of adobe acrobat reader. Modeling residential coastal flood vulnerability using. Geosciences free fulltext flood risk mapping using. Such disasters are occurring with increased frequency as a consequence of.
Cdcs geospatial research, analysis, and services program is evaluating the benefits of considering social vulnerability in the 4 ph. Towards an integrated flood vulnerability index a flood vulnerability assessment thesis pdf available april 2010 with 829 reads how we measure reads. Defraenvironment agency flood and coastal erosion risk. This study applies geographical information system techniques to produce flood vulnerability map of lokoja metropolis due to its confluence nature and its potential to cause devastating effect to the surrounding communities. This study focuses on an approach to assess flood vulnerability and discuss the benefits of adaptation options at a city scale and sub catchment scale, using flood vulnerability index balica et al. Questionnaires were used to collect the primary data from the selected households and. Social vulnerability is a topic of interest in disaster management but the scope of its utility is still undefined. Gisbased mapping of flood vulnerability and risk in the. Assessing illinoiss flood vulnerability using hazusmh. Using methodology developed by the san francisco department of public health, the wisconsin building resilience against climate effects brace staff conducted a geospatial analysis of heatrelated vulnerability in both wisconsin as a whole and the greater milwaukee urban area, with assistance from the wisconsin department of. Due to the extent of flooding impacts there is a need to improve methods in flood risk.
Development of a method for assessing flood vulnerability. For more information, please contact your agent or visit. Study of integrated social vulnerability index soviint of. Where the increase in flood vulnerability is due to onsite changes in ground levels this is covered by ifv. Pdf towards an integrated flood vulnerability index a. This document details the development of the submergence vulnerability index, which incorporates sedimentelevation data as well as hydrologic data to determine the vulnerability of a wetland based on its ability to. The inclusion of social and economic vulnerability highlights the impacts of floods that are typically ignored in practice. All fvi equations have factors for exposure to hazard, sensitivity or susceptibility of the people, and their resilience or coping capacity to the hazard. An exhaustive knowledge of flood risk in different spatial locations is essential for developing an effective flood mitigation strategy for a watershed. In this preliminary study, multivariate analysis has been used to develop a flood vulnerability index fvi, which allows for a comparative analysis of flood vulnerability between different basins. 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.
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