01Mar 2019

A GEO SPATIAL ANALYSIS OF FLOOD HAZARD IMPACT ASSESSMENT IN VAVUNIYA DISTRICT, SRI LANKA.

  • Assistant Lecturer, Department of Geography, University of Colombo, Sri Lanka.
  • Faculty of Graduste Studies, University of Sri Jayawardanapura,Sri Lanka.
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Several areas in the Vavuniya district are being experienced to inundate during every rainy season frequently, thus it is crucial to assess the flooding incidents in this area in order to derive the proper planning and policies to overcome the impact of this hazard. The objective of this study was to build a GIS model for flood hazard impact assessment in Vavuniya district of Northern Province. In addition to produce flood hazard risk map to the Vavuniya district in a GIS platform. The study has required primary data, were collected from observations, discussions and interviews with affected people using district level participatory hazard and resource mapping. secondary data has been collected from reports, disaster preparedness and response plan in Disaster Management Center. The present investigation was tailored to assess the use of Multi Criteria Decision Approach (MCDA) in Vavuniya district flood analysis. Categorization of possible flood risk zone was accomplished using geospatial datasets like elevation, slope, distance from river, and land use characteristics which were derived from digital elevation model (DEM) and satellite image respectively. As well as, data were collected using hazard score, vulnerability score, and manageability score tables and produced risk map in Vavuniya district. This result suggests that MCDA within GIS techniques is very useful in accurate and reliable flood risk analysis and mapping. In this context it is critical to develop appropriated preventive strategies in the flood prone zone to protect the people from potential disaster threat. The Hazard score map with spatial references Vavuniya north, Vavuniya, and Vengalacheddikulam are high hazard prone areas in Vavuniya district. The vulnerability score map with spatial references Vavuniya north, Vavuniya and Vengalacheddikulam are highly vulnerable areas in Vavuniya district. The manageability score map with spatial references Vavuniya north, Vavuniya, and Vengalacheddikulam are highly hazard prone areas in the district. The risk score map with spatial references Vavuniya, Vavuniya south and Vengalacheddikulam are highly hazard prone areas in Vavuniya district.

  1. Brauch, H.G. (2005). Threats, Challenges, Vulnerabilities and Risks in Environmental and Human Security. Publication of United Nations University Institute for Environment and Human Security. Source no,1/2005.
  2. Christenson, E., Elliott, M., Banerjee, O., Hamrick, L., & Bartram, J. (2014). Climate-Related Hazards: A Method for Global Assessment of Urban and Rural Population Exposure to Cyclones, Droughts and Floods. International Journal of Environmental Research and Public Health, 11(2), 2169?2192. http://doi.org/10.3390/ijerph110202169
  3. Correia, F. N., Saraiva, M. G., & Silva, F. N. (1997). Floodplain Management in Urban Developing Areas. submitted to publication in Water Resource Manage, Kluwer Academic Publishers. Dordrecht, the Netherlands.
  4. Delley, M., Chen R.S., Deichmann, U., Lerner-Lam A.L., Arnold, M., Lyon, B., &Yetman, G. (2005). Natural Disaster hotspots: a global risk analysis. International Bank for Reconstruction and Development. The World Bank and Columbia University, Washington, DC.
  5. Doocy, S., Daniels, A., Murray, S., & Kirsch, T. D. (2013). The Human Impact of Floods: a Historical Review of Events 1980-2009 and Systematic http://doi.org/10.1371/currents.dis.f4deb457904936b07c09daa98ee8171a
  6. IPCC, (2007). An Assessment of the Intergovernmental Panel on Climate Change. IPCC Secretariat, World Meteorological Organization, Geneva, Switzerland.
  7. Lowe, D., Ebi, K. L., & Forsberg, B. (2013). Factors Increasing Vulnerability to??? Health??? Effects??? before,??? during??? and??? after Floods. International Journal of Environmental Research and Public Health, 10(12), 7015?7067. http://doi.org/10.3390/ijerph10127015
  8. RPA, (2004). Evaluating a multi criteria analysis methodology for application to flood management and coastal defence appraisals, Rand Technical Report.
  9. Rodriguez-Llanes, J. M., Ranjan-Dash, S., Mukhopadhyay, A., &Guha- Sapir, D. (2016). Looking upstream: enhancers of child nutritional status in post-flood rural settings. PeerJ, 4, e1741. http://doi.org/10.7717/peerj.1741
  10. UNISDR, UNDP, IUCN, (2009). Making disaster risk reduction gender sensitive. policy and practical guidelines. Geneva, Switzerland: UNISDR, UNDP &IUCN.

[V. Sivarajah, J.N.D. Jayathunga and S. Thiyagarajah. (2019); A GEO SPATIAL ANALYSIS OF FLOOD HAZARD IMPACT ASSESSMENT IN VAVUNIYA DISTRICT, SRI LANKA. Int. J. of Adv. Res. 7 (Mar). 98-109] (ISSN 2320-5407). www.journalijar.com

J.N.D. Jayathunga

DOI:

Article DOI: 10.21474/IJAR01/8606      
DOI URL: http://dx.doi.org/10.21474/IJAR01/8606

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