Construction of managed aquifer recharge structures (MARS) to store floodwater is a common strategy for storing depleted groundwater resources in arid and semi-arid regions, as part of integrated water resources management (IWRM). MARS divert surface water to groundwater, but this can affect downstream fluvial processes. The impact of MARS on fluvial processes was investigated in this study by combining remote sensing techniques with hydro-sediment modeling for the case of the Kaboutar-Ali-Chay aquifer, northwestern Iran. The impact of MARS on groundwater dynamics was assessed, sedimentation across the MARS was modeled using a 2D hydrodynamic model, and morphological changes were quantified in the human-impacted alluvial fan using Landsat time series data and statistical methods. Changes were detected by comparing data for the periods before (1985–1996) and after (1997–2018) MARS construction. The results showed that the rate of groundwater depletion decreased from 2.14 m/yr before to 0.86 m/yr after MARS construction. Hydro-sediment modeling revealed that MARS ponds slowed water outflow, resulting in a severe decrease in sediment load which lead to a change from sediment deposition to sediment erosion in the alluvial fan. Morphometric analyses revealed decreasing alluvial fan area and indicated significant differences (p < 0.01) between pre- and post-impact periods for different morphometric parameters analyzed. The rate of change in area of the Kaboutar-Ali-Chay alluvial fan changed from −0.228 to −0.115 km²/year between pre- and post-impact periods.

作为集成水资源管理（IWRM）的一部分，建设有管理的含水层补给结构（MARS）来存储洪水是一种在干旱和半干旱地区存储枯竭的地下水资源的常见策略。MARS将地表水转移到地下水，但这会影响下游的河流过程。在这项研究中，通过将遥感技术与水沉降模型相结合，对伊朗西北部Kaboutar-Ali-Chay含水层的情况，研究了MARS对河流过程的影响。评估了MARS对地下水动力学的影响，使用2D流体动力学模型对整个MARS的沉积进行了建模，并使用Landsat时间序列数据和统计方法对了人类影响的冲积扇中的形态变化进行了定量。通过比较MARS建设之前（1985-1996年）和之后（1997-2018年）的数据来检测变化。结果表明，MARS建成后，地下水耗竭率从之前的2.14 m / yr降低到0.86 m / yr。水文沉积模型表明，MARS池塘减缓了水的流出，导致泥沙负荷严重减少，从而导致冲积扇从泥沙沉积变为泥沙侵蚀。形态分析表明，冲积扇面积减小，并显示出显着差异（导致泥沙负荷严重下降，从而导致冲积扇从泥沙沉积变为泥沙侵蚀。形态分析表明，冲积扇面积减小，并显示出显着差异（导致泥沙负荷严重下降，从而导致冲积扇从泥沙沉积变为泥沙侵蚀。形态分析表明，冲积扇面积减小，并显示出显着差异（ 对于不同的形态学参数，分析了撞击前和撞击后之间的p <0.01）。在撞击前后，Kaboutar-Ali-Chay冲积扇面积的变化率从-0.228变为-0.115 km ² /年。