Estimation and mapping of groundwater characteristics in Greater Wad-Medani Locality, Gezira State, Sudan

Groundwater dominates the domestic water supply (85%) in the Gezira State, Central Sudan. Groundwater resources in Gezira are basically represented by two water-bearing geological formations: the Nubian Sandstone formation overlain by the Gezira formation and shallow quaternary to recent deposits in minor streams. This study aims at identifying the pattern distribution of selected aquifer characteristics of the Gezira geological formation. It applies empirical Driscoll’s equation to generate the aquifer’s transmissivity. Geospatial techniques in the Geographic Information System (GIS) accompanied with Digital Elevation Model (DEM) datasets were used in interpolation and map transmissivity. The obtained transmissivity of 7.44 to 875 m