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Groundwater: Extraction versus recharge; vulnerability assessment

机译：地下水：开采与补给;漏洞评估

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The rising demands of groundwater for agricultural, due to the non-reliability of surface water sources have placed groundwater resource under serious pressure subjecting it to depletion and quality deterioration risks. Since, The Nile Delta aquifer is one of the most important renewable groundwater reservoirs in Egypt; it stands as the second source of water after the Nile, especially in the Nile Delta region. The Nile Delta aquifer is continuously recharged by irrigation water and through seepage from surface water. Moreover the Nile Delta aquifer is vulnerable to saltwater intrusion resulting from increasing groundwater abstraction. A 3D regional model for the Nile Delta aquifer system has been constructed to be used as a water management tool for different water management scenarios. The model was used to test the sensitivity of the aquifer to different extraction and recharge rates and investigate the system response on heads and salinity of the aquifer. The results confirmed that sensitivity of the aquifer to the tested parameters differs from one place to another.
机译：由于地表水源的不可靠性，对农业的地下水需求不断增加，使地下水资源承受着巨大的压力，使其面临枯竭和质量恶化的风险。由于尼罗河三角洲含水层是埃及最重要的可再生地下水库之一;它是继尼罗河之后的第二大水源，特别是在尼罗河三角洲地区。尼罗河三角洲含水层不断被灌溉水和地表水渗漏补给。此外，尼罗河三角洲含水层容易受到地下水抽取量增加导致的盐水入侵的影响。尼罗河三角洲含水层系统的3D区域模型已构建为用作不同水管理方案的水管理工具。该模型用于测试含水层对不同抽提率和补给率的敏感性，并研究系统对含水层扬程和盐度的响应。结果证实，含水层对测试参数的敏感性在一个地方到另一个地方是不同的。

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