Enhancing Groundwater Recharge Through Comparative Analysis Of Rainwater Harvesting Solutions In Arid Region Of Southern Afghanistan: A Review
DOI:
https://doi.org/10.65486/gw8tjd60Keywords:
Rainwater harvesting (RWH), Water shortages, groundwater recharge, Spatial analysis, Comparative analysisAbstract
Purpose:
The objective of this study is to examine the efficacy of rainwater harvesting (RWH) methods in enhancing groundwater recharge and water security in Afghanistan's arid and semi-arid areas, which are increasingly affected by climate change and water scarcity.
Method:
A comparative analysis of rainwater harvesting systems employed in analogous meteorological circumstances worldwide was done. The research utilised Geographic Information System (GIS) and spatial analysis methods to assess various environmental factors—including precipitation patterns, elevation, soil composition, geology, land cover, and water scarcity—to determine ideal sites for Rainwater Harvesting (RWH) deployment throughout Afghanistan.
Results:
The spatial analysis identified particular areas conducive to groundwater recharge via rainwater harvesting. Among the assessed techniques, sand dams, infiltration pits, rock catchments, and percolation ponds were recognised as the most successful owing to their water retention capabilities, adaptation to arid conditions, and potential for sustainable groundwater augmentation.
Practical Implications:
The findings offer a framework for policymakers and development organisations to use cost-effective and contextually suitable rainwater harvesting technologies in Afghanistan, thus enhancing sustainable water management and bolstering resistance to water scarcity.
Originality/Novelty:
This study is one of the initial efforts to integrate global rainwater harvesting knowledge with high-resolution spatial analysis specifically designed for Afghanistan's distinct environmental and climatic conditions, providing a scientifically robust framework for planning groundwater recharge through rainwater harvesting in arid and semi-arid regions.
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