II-1-Identification of Recharge Source for Jodhpur City.

Abstract

Utility of hydrological data in sustainable development of ground water resources in the country is well established. Besides the hydrological data is use for solution of different ground water problems. Jodhpur city has been experienced the problem of rising ground water levels, causing seepage in underground basement of shops and houses in these areas and weakening the foundations and reducing the life of building due to dampness of the walls. The paper attempts to present that there is a clear potentiality of using these data for find out the source of recharge in parts of Jodhpur city and adjoining area. The water level data of pre-monsoon, post-monsoon and monthly water level data at few places collected from monitoring stations. The water level variation, bygrographs, water level trend at particular station and water table contour maps of the study area have been prepared and discussed. The average water level varies from 5 to 35 m bgl. from place to place due to different hydrological formation and structures. Hydrograph of the monitoring station have been prepared. A perusal of these hydrographs clearly indicates the rise of water level. Trend analysis of ground water table has been carried out based on the detailed hydrological studies. In this analysis various types of data such as rainfall, ground water table and water level of Kailana lake were utilized to show the comparative variations. The counter maps of RL of water table have been prepared for pre and post monsoon seasons for the entire study area. The water table contour map shows the ground water flows direction which, fallows the ground slope in the area under study. The flow of water is predominantly in two directions namely east and south-east.