Drawdown and Dynamics of Groundwater Table in Kathmandu Valley, Nepal

Groundwater drawdown in Kathmandu Valley, Nepal, averages 0.7249 meters annually, mirroring critical trends observed in Mexico City's alluvial deposits where subsidence is already a concern. This rapid depletion, driven by excessive groundwater extraction for domestic and industrial use, threatens water security and environmental stability, as nearly half the valley's population relies on these resources. The study employed linear regression modeling to analyze drawdown rates alongside standard deviation ranges, revealing a shift in drainage patterns toward the southwestern part of the valley. These findings underscore the urgent need for sustainable groundwater management to mitigate hydrological, hydrogeological, and environmental risks, including land subsidence and water scarcity.

Gautam, D., & N. Prajapati, R. (2014). Drawdown and Dynamics of Groundwater Table in Kathmandu Valley, Nepal. The Open Hydrology Journal, 8(1), 17–26. https://doi.org/10.2174/1874378101408010017