文章基本信息

标题：Flood hazard mapping in Urban Council limit, Vavuniya District, Sri Lanka- A GIS approach
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作者：M.S.R. Akther ; G. Tharani
期刊名称：International Research Journal of Environmental Sciences
电子版ISSN：2319-1414
出版年度：2016
卷号：5
期号：9
页码：27-31
语种：English
出版社：International Science Community Association
摘要：Several areas in the Vavuniya Urban Council (UC) are being experienced to inundate during every rainy seasons 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 impacts this hazard. The objectives of this study were to analyze the flood prone areas and to produce flood hazard index map of the Vavuniya district in a GIS platform. The study area is Vavuniya UC which consists 11 GN divisions. Required secondary data were collected from the Vavuniya UC, meteorological department and disaster management centre of Sri Lanka. Flood hazard map was produced by using flood incidents, population density, flood prone areas in percentage and distance from river as variables. Knowledge based ranking system was exploited to produce flood hazard index. Each variable was assigned equal weights. The developed flood hazard map revealed that 2 GN divisions out of 11 in safer zone. While 9 GN divisions were in threat zone. In this context it is critical to develop appropriate preventive strategies in the flood prone zone to protect the people from potential disaster threat.
关键词：Flood hazard index;Flood prone area;Knowledge based ranking