This book was carried out to examine the climate change effect on groundwater resources in Benin City. The objectives were to acquire and analyze climate parameters, represent the historical and future climate data on a map, as well as to acquire and analyze historical borehole data for detecting groundwater levels. The methodology involves data acquisition of sentinel 2 imageries for generating the land use land cover of the area alongside hydrological data of SRTM (DEM), rainfall and temperature data (historical and future), soil data with the administrative location boundary map of the study area serving as an area of interest or extent for which all data processing operation is bounded, together with the acquisition of borehole data (1990 and 2020).