Aquifer Mapping studies and Management Plan has been carried out in Ri Bhoi district, Meghalaya under National Aquifer Mapping and Management Plan (NAQUIM) programme with an objective to know the different aquifer system prevailing in the study area, to decipher the vertical and lateral extend of the aquifer down to the depth of 200 m, its characteristic, quantity as well as quality so as to bring a complete sustainable and effective aquifer management plan for ground water resources development in the study area.These studies has been done through multi-disciplinary approach so as to achieve the said objectives. Occurrence of ground water in the study area is mainly of weathered and fractured Gneissic, Granite pluton and Quartzite formation. The different hydrogeological data are generated through intensive field data collection and testing.The aquifer system in this district can be dividedas a two aquifer systemviz., first aquifer (shallow) and second aquifer (deeper).Shallow or first aquifer consists of weathered residuum where ground water occurs under water table condition and is mainly developed by construction of dug wells or shallow bore wells as hand pump. The second aquifer is the deeper aquifer which tapped the fractured zone. Based on the study of litholog and analysis of depth of construction of dug wells and shallow bore wells, it is found that the first aquifer occur within 2 to 35 m bgl. Ground water in the second aquifer occurs under semi-confined to confined condition in the fractures upto the maximum depth of 213.59 m bgl. Ground water exploration has been carried out in different parts of the district to delineate the potential aquifers and their geometry and to determine the hydrogeological parameters of the aquifer systems.To know the different parameters of an aquifer, Aquifer performance test, preliminary yield test, slug test and dug well pump test were carried out during the course of study.Soil infiltration test wasalso conducted in different parts of the study area to know the infiltration rates at different soil conditions, topography, geology and environment and also to know its suitability and the amount of water recharging in the area and its rainfall infiltration factor.