Geospatial mapping of potential recharge zones in parts of Pune city |
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| Authors: | Raymond A Duraiswami Vrishali Dumale Usha Shetty |
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| Institution: | (1) Groundwater Surveys and Development Agency, Bhujal Bhavan, Shivajinagar, Pune, 411 005, India;(2) Department of Geography, University of Pune, Pune, 411 007, India |
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| Abstract: | Runoff has increased many fold in urban areas due to increase in paved areas, training of streams and construction of storm
water drains. The recharge is therefore continuously decreasing; resulting in depleting groundwater reserves beneath large
cities, especially those situated on water divides. In order to reduce surface runoff and replenish groundwater many advocate
artificial recharge through rainwater harvesting. Conventionally, detailed hydrogeological survey is needed by expert hydrogeologists
to suggest suitable sites for rooftop rainwater harvesting and storage in the subsurface aquifers. Pune, a rapidly growing
city, is under severe stress due to shortage of water in some areas. An effort has been made in this study to identify areas
suitable for rooftop rainwater harvesting by integrating traditional hydrogeological survey data with the help of Remote Sensing
and Geographic Information System. This endeavour has led to develop a program called SLUGGER-DQL which helps to identify
potential sites for rooftop rainwater harvesting and artificial recharge. The program is open ended and several other factors
controlling potential recharge can be easily added on. Based on the results of the present study, potential sites for rainwater
harvesting and artificial recharge have been identified in the Pune University-Shivajinagar-Kothrud area. The present paper
demonstrates the utility of traditional hydrogeological surveys combined with modern techniques in solving problems related
to urban hydrogeology and town planning. |
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| Keywords: | Groundwater Hydrogeology Recharge zones Urban areas Pune Maharashtra |
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