33.-Isotope study to investigate water seepage in the basement in some parts of Jodhpur city

Abstract

Jodhpur city is very important city of Western Rajasthan. The city of Jodhpur was founded about five centuries back. It was primarily designed to arrest rainwater in impounding structures to provide sustained water supply to the populace. The city consists of a number of water impounding structures such as baories, ponds, jhalras etc. Seepage from these structures was exploited through a number of wells and step wells. With the availability of water from lift canal; which is fed to Kailana lake, operation of almost, all of these structures have been suspended since last few years.

Seepage water accumulation in the basement of a r amber of buildings and rise in the static water level (SWL) in some parts of Jodhpur city (Kuni Bibhari Ka Mandir and Sojati Gate areas) has been reported. in March 1998 to the Ground Water Department, Jodhpur. They collected few samples for chemical as well as bacteriological analysis. Chemical quality of water accumulated in basement does not completely resemble the t of the groundwater in wells in the immediate vicinity. Bacteriological analysis has revealed presence of coliform above permissible limit in all the water samples irrespective of seepage water and groundwater. However, faecal Coliform (EColi) is absent in all the water samples including basement samples.