GROUND WATER MODELING OF VARUNA BASIN

Abstract

The existing water resources though plentiful can not be exploited in-discriminately without an adverse effect on the total water supply. Hence it is necessary to find means of better utilisation of available surface and ground water resources for increasing living standard of people. For ground water exploitation one has to investigate and evaluate ground water potential of the basin and understand the mecha-nism of the system. Ground water problems can be studied either by carrying out field studies or with the help of models. Field study is always time consuming and expensive, so model study is preferable. Models are useful tools for prediction of influence of management practices on water table or piezometric level within an aquifer. There are two types of models, physical models and mathematical models. The physical model, needs laboratory facility as well as more time for construction of model and is built for specific problem. The mathematical model which removes those difficulties is based upon mathematical expression or group of expressions that describe the aquifer functioning. Under this study a mathematical model was employed for case study of Varuna Ground Water Basin. The river Varuna, a tributary of river Ganga has its confluence at Varanasi. The basin which lies in four districts, Pratapgarh, Allahabad, Jaunpur and Varanasi of eastern part of Uttar Pradesh, covers total area of 2,7,87O Hect.