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Impact of costal embankment on the flash flood in Bangladesh: a case study

机译：孟加拉国沿海堤防对山洪的影响

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摘要

Coastal areas of Bangladesh frequently experience tropical cyclones and associated tidal bore. In order to prevent cyclonic or storm-surge flooding and to increase crop production by preventing intrusion of saline ocean water, many coastal embankmentprojects were initiated in the 1960s by the Bangladesh government. After construction of these embankments, particularly their reconstruction in 1991 has increased the frequency of flash floods in coastal areas. The objective of this study is to examineto what extent the reconstruction of embankment is responsible for the increased severity of flash flooding at the Chokoria thana of the Cox's Bazar district, Bangladesh. Using hydrological data and perception of the respondents on the increased floodingthrough the rapid rural appraisal (RRA) method, it was found that severity of the flood increased after the reconstruction of embankments in 1991. Other causes of increased flooding is also explored.
机译：孟加拉国沿海地区经常经历热带气旋和相关的潮汐孔。为了防止旋风或风暴潮泛滥，并通过防止海水盐水的入侵来增加农作物的产量，孟加拉国政府于1960年代启动了许多沿海路堤工程。这些路堤建成后，尤其是1991年的重建，增加了沿海地区山洪泛滥的频率。这项研究的目的是研究在孟加拉国考克斯巴扎尔地区的Chokoria thana，路堤的重建在多大程度上导致了山洪泛滥的加剧。使用水文数据和通过快速农村评估（RRA）方法对受访者对洪水泛滥的看法，发现在1991年路堤重建后洪水的严重性有所增加。还探讨了洪水泛滥的其他原因。

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