The Kgalagadi area is one of the areas in Botswana experiencing a problem with very high salinity of groundwater. This project is aimed at determining the cause of salinity and salinization circle of the groundwater in the Kgalagadi area, with a specific focus at Tsabong wellfield. In this study geophysical (Electrical Resistivity Tomography- ERT and multichannel analysis of surface waves- MASW) and hydrogeochemical techniques will be used to achieve the objectives. The geophysical methods will be used to identify presence of any confining layer at Tsabong wellfield, and if present be investigated to understand its thickness, its nature in terms of compaction and permeability, relating to any possibility of it being leaky and thus allowing infiltration of salts with water during aquifer recharge from surface water. Hydrogeochemical techniques will be used to determine the chemical composition of groundwater in Tsabong wellfield in terms of temperature, total dissolved solids (TDS), pH and electrical conductivity (EC). Through these techniques, surface water and rocks interactions upon aquifer recharge, will be investigated to understand the influence it has to aquifer salinity. These will then be analyzed for determination of the cause of salinity of groundwater and by then the salinization circle in Tsabong wellfield.