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Are embankments a good flood control strategy? A case study on the Kosi river

机译：堤防是好的防洪策略吗？以科西河为例

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摘要

Whether embankments should be used to control floods is a question of great importance in the eastern Gangetic plain, where embankment breaches cause severe flood damage every year and huge damage due to major breaches every few years. Critics of the embankment policy have called for a strategy of living with floods by building dispersed infrastructure to cope with floods. However, no cost-benefit analysis of alternative strategies is available. This paper makes a first pass at evaluating embankments. Using 2 years or more of data from 504 households in 28 villages in the floodplain of the Kosi river in north Bihar, the paper compares agricultural output, wage incomes, unemployment and other indicators of well-being in villages subject to flooding from rivers with those from villages not subject to such flooding. The paper finds that, for the most part, villages subject to river flooding are no worse off than villages not subject to such flooding. Thus, the evidence provides no support for the embankment strategy.
机译：在东部恒河平原上，是否应使用路堤来控制洪水是一个非常重要的问题，那里的路堤破坏每年都会造成严重的洪灾破坏，而每隔几年就会因重大破坏而造成巨大破坏。堤防政策的批评者呼吁通过建造分散的基础设施来应对洪灾来应对洪灾。但是，没有替代策略的成本效益分析。本文是路堤评估的第一步。利用比哈尔邦北部科西河洪泛区28个村庄的504户家庭的2年或更长时间的数据，该论文比较了遭受河水泛滥的村庄的农业产出，工资收入，失业率和其他福祉指标来自没有遭受此类洪水侵袭的村庄。本文发现，在大多数情况下，遭受河水泛滥的村庄的状况并不比没有遭受洪水泛滥的村庄更糟。因此，证据不支持堤防策略。

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