GROUNDWATER POTENTIAL ASSESSMENT USING GIS AND AHP IN ANIOCHA SOUTH LGA, DELTA STATE.
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Abstract
In this study, Remote Sensing (RS), Land-sat 8 digital data, and digital elevation models
(DEMs) from the Advanced Space-borne Thermal Emission and Reflection Radiometer
(ASTER), Food and Agricultural Organization (FAO) along with other stereotypical data
such as geology and rainfall were digitized and analyzed to create various thematic maps
(geology, land use/cover, soil, drainage density, rainfall and slope maps) required for
groundwater modelling in the study area. These thematic maps were assigned well-chosen weights and different rankings to the individual categories within each thematic map using a manual Analytical Hierarchy Process (AHP). Parameters which had high influence on groundwater potential assessment were given higher percentages based on some criteria and others were which had low impact given low percentages. The groundwater potential zones are achieved by overlaying the thematic maps using the spatial analysis tool in Arc-GIS 10.8.
(DEMs) from the Advanced Space-borne Thermal Emission and Reflection Radiometer
(ASTER), Food and Agricultural Organization (FAO) along with other stereotypical data
such as geology and rainfall were digitized and analyzed to create various thematic maps
(geology, land use/cover, soil, drainage density, rainfall and slope maps) required for
groundwater modelling in the study area. These thematic maps were assigned well-chosen weights and different rankings to the individual categories within each thematic map using a manual Analytical Hierarchy Process (AHP). Parameters which had high influence on groundwater potential assessment were given higher percentages based on some criteria and others were which had low impact given low percentages. The groundwater potential zones are achieved by overlaying the thematic maps using the spatial analysis tool in Arc-GIS 10.8.
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