Investigation of Ground Water Table in the South-East (Chittagong) Part of Bangladesh

Abstract

Ground water forms the major portion of earth’s fresh water source and it is almost safe to drink. Depletion of ground water table due to continuous pumping causing scarcity of water in the city area of Bangladesh. So information about ground water table is required for future recommendation of ground water supply to general people. For the investigation purpose, depth of water table has been determined in three seasons with respect to mean sea level. Among 41 wards of Chittagong City, 18 wards have been selected for this purpose where depth of water table is measured from the shallow tube well. The present investigation includes field investigation for locating of tube well in Chittagong City Corporation area with the aim of measuring water level from ground surface. Seasonal variation of the water level has also been determined with respect to man sea level. Water collected from the well has been evaluated in the laboratory for determining quality of water. From the investigation, it has been established that, water table with respect to mean sea level is different at different wards. Seasonal variation has been observed due to lowering of water table and it has been found that water table is minimum at drought season