Harvesting Flood Water to Recharge Groundwater in Kabul Basin

摘要

Water management in the world especially in Afghanistan is a major challenge. Kabul, Afghanistan's capital city depends on groundwater resources for domestic consumption, agriculture, industrial uses and other activities. Currently the water supply in Kabul faces a severe shortage and 100% abstracting from Kabul aquifer. The increasing over-abstraction, low recharge and high evaporation of groundwater has led to a noticeable decrease in natural groundwater storage of Kabul Aquifers. In this study is proposed harvesting flood water in suitable areas to recharge groundwater budget by ponds, check dams and agricultural lands. The prospected amount is estimated through simple mathematical calculation and used computer software especially GIS. The result showed that valuable amount of water might be recharged from proposed ponds check dams and agricultural lands which is diverting from rivers during flood season. Approximately 5 MCM/times stores in proposed water collection area. 10% of surface water is infiltrated from river runoff to groundwater budgets. It might be a good method, approaches and recommendation to recharge artificially groundwater in Kabul basin. The results of the study could be an important tool to have sustainable groundwater for a partial Kabul City water demands and saving from more aquifer depletion.