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A new scheme for large-scale natural water storage in the floodplains: the Delhi Yamuna floodplains as a case study

机译:洪泛区大规模天然蓄水的新方案:德里亚穆纳河泛滥平原作为案例研究

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摘要

The top layer of accumulated sand washed down by floods over millions of years, makes river floodplains into giant aquifers. We propose a scheme for the natural storage of excess monsoon river-water discharge in the extensive and deep sand top layer of the floodplain of the river. The excess monsoon discharge can be used for a regulated inundation of an embanked area of the floodplain - to soak in and store the water. This storage can then be used for the withdrawal of water during the dry months. We illustrate this by an evaluation of the potential of the Yamuna floodplains in the National Capital Territory of Delhi and show that there can be an annual yield of 600-900 MCM of water, which is three-fourths the total water supply to Delhi. This makes it an invaluable natural resource potentially worth about Rs 6000-9000 crores a year of non-invasive use.
机译:数百万年的洪水冲刷掉了堆积的表层,使河滩变成了巨大的含水层。我们提出了一个方案,用于在河泛滥平原广泛而深厚的沙层中自然存储多余的季风河水。过量的季风排放可用于对泛滥平原的堤防区域进行有计划的淹没-吸收并储存水。然后,该存储可用于在干燥月份取水。我们通过对德里国家首都辖区的亚穆纳洪泛区的潜力进行评估来说明这一点,并表明可以产生600-900 MCM的水的年产量,这是德里供水总量的四分之三。这使其成为一种宝贵的自然资源,每年非侵入性使用价值约为6000-900亿卢比。

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