The rapid depletion and deterioration of groundwater in the Ganga Basin requires an effective water management plan for sustained water availability. An airborne electromagnetic study in the Ganga-Yamuna doab, India, supplemented with drilling and logging data to address the groundwater crisis, has unravelled exhaustive aquifer information with a discovery of 45 km long buried river, having dimensions comparable to those of Ganga and Yamuna. This ancient river, likely to be extending towards the Himalaya, is characterized by a porous and permeable structures and is hydrogeologically linked with Ganga and Yamuna rivers through an underlying principal aquifer, which might hold a great promise for management of the current declining groundwater resources in the region. Interestingly, the location of this major paleoriver falls within the region where a lost mythological river was believed to be flowing in the past. The results add a new physical dimension to this belief.

中文翻译：

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印度 Prayagraj 恒河平原缺水古河的空中电磁特征：潜在的地下水库

恒河盆地地下水的迅速枯竭和恶化需要一个有效的水资源管理计划，以实现持续的水资源可用性。在印度 Ganga-Yamuna doab 进行的空中电磁研究，辅以钻井和测井数据以解决地下水危机，揭示了详尽的含水层信息，发现了 45 公里长的埋藏河流，其尺寸可与恒河和亚穆纳河相媲美。这条古老的河流很可能向喜马拉雅山脉延伸，其特点是多孔和可渗透的结构，在水文地质上通过一个潜在的主含水层与恒河和亚穆纳河相连，这可能对管理目前正在下降的地下水资源有很大的希望该区域。有趣的是，这条主要古河的位置位于过去据信有一条失落的神话河流流过的地区。结果为这种信念增加了一个新的物理维度。