Open-source software application for hydrogeological delineation of potential groundwater recharge zones in the Singida semi-arid, fractured aquifer, central Tanzania

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dc.creatorMussa, Kassim Ramadhani
dc.creatorMjemah, Ibrahimu Chikira
dc.creatorMachunda, Revocatus Lazaro
dc.date.accessioned2022-12-16T08:01:57Z
dc.date.accessioned2025-08-05T07:25:19Z
dc.date.available2022-12-16T08:01:57Z
dc.date.created2022-12-16T08:01:57Z
dc.date.issued2020
dc.description.abstractThis study attempted to delineate and map potential groundwater recharge zones of the Singida, semi-arid, fractured crystalline basement aquifer using open source remote sensing and GIS software. Various thematic maps such as lithology/hydrogeology, soil, land-cover/use, slope, lineament density, drainage density and rainfall distribution were integrated in QGIS software. Vector input layers were rasterized and resampled using QGIS wrap projection function to make sure that the grid cells are of the same size. Reclassification using SAGA and GRASS reclass algorithms in QGIS was carried out to realign the factor classes in a consistent scale, and reclassification to a scale of 1 to 5 was carried out to harmonize the results. The study identified a number of potential areas for groundwater recharge, groundwater exploration, groundwater development and potential areas for artificial groundwater recharge. Potential groundwater recharge zones for the Singida semi-arid fractured aquifer are restricted to areas with high lineament density, cultivated areas, grassland and flat to gentle slopes. The potential of groundwater recharge is also observed in areas with low drainage density. The delineated zones provide a good understanding of the potential recharge zones, which are a starting point for recharge zone protection. This blended approach can be utilized for carrying out suitability analysis using the weighted overlay analysis approach. Areas designated good and very good are recommended for artificial recharging structures as an alternative technique for enhancing groundwater recharge through rainwater harvesting. This will help to augment groundwater storage in this semi-arid environment.
dc.identifierhttp://www.suaire.sua.ac.tz/handle/123456789/4827
dc.identifier.urihttp://repository.costech.or.tz/handle/20.500.14732/97616
dc.languageen
dc.publisherMDPI
dc.subjectPotential groundwater recharge zones
dc.subjectSemi-arid
dc.subjectFractured aquifer
dc.subjectWeighted overlay analysis
dc.subjectOpen source software
dc.titleOpen-source software application for hydrogeological delineation of potential groundwater recharge zones in the Singida semi-arid, fractured aquifer, central Tanzania
dc.typeArticle

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