Abstract
Groundwater is one of the significant sources of water for domestic, agricultural and industrial purposes. The demand for water has increased over the years and this has caused water scarcity in many developing countries. Thus, monitoring and assessment of groundwater is essential for a robust water resource management. The study attempts to delineate groundwater potential zones using a simple but effective ensemble of fuzzy analytical hierarchy process (FAHP) and geospatial technologies. Ten site-specific parameters, namely geomorphology, lineament density, drainage density, lithology, slope, rainfall, normalized difference vegetation index (NDVI), topographic position index (TPI), land use/land cover (LULC) and curvature, were analyzed to evaluate their influence on groundwater potential. The results revealed that of the total area of the watershed, three watersheds (SW3, SW4 and SW7) covering 43.6% area possessed moderate groundwater potential. Two watersheds (SW5 and SW6) covering an area of 29.7% were having low groundwater potential while the other two watersheds (SW1 and SW2), covering an area of 26.6% were having high potential for groundwater. Groundwater potential zones were validated through receiver operating characteristic (ROC) curve and yielded the area under curve (AUC) of 0.82, which ascertained a good validity of the model applied. The methodology adopted in the study may be effectively utilized by the other geographical regions for accurate mapping of groundwater potentials. This preliminary estimate and insights of groundwater potential may help the local water managers, authorities and local communities in exploring the potential drilling sites for groundwater exploitation. The study calls for the conjunctive utilization of surface water and groundwater to maintain a balance between the surface water and groundwater.
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Data availability
The sources of the datasets used in the study are given in the manuscript (Table 1). However, the data may be available on request to the corresponding author.
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Authors wishes to acknowledge the editor and anonymous reviewers for their valuable comments and suggestions. Authors also expresses their heartfelt gratitude towards CGWB for the groundwater related reports, NASA, USGS, ESA and ISRO for the remote sensing products needed in the study.
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Rahaman, M.H., Sajjad, H., Roshani et al. Delineating groundwater potential zones using geospatial techniques and fuzzy analytical hierarchy process (FAHP) ensemble in the data-scarce region: evidence from the lower Thoubal river watershed of Manipur, India. Arab J Geosci 15, 677 (2022). https://doi.org/10.1007/s12517-022-09946-y
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DOI: https://doi.org/10.1007/s12517-022-09946-y