ANNOUNCEMENTS
NCR Delhi is becoming a water-scarce region because of the pressure of population and urbanization(Kumar et al., 2018). Due to urbanization, deforestation, and the absence of water planning, groundwater recharge doesn’t happen as rainwater becomes runoff. Not only there is a lack of effort in recharging but also the groundwater is being used incautiously (Sanghamitra, 2015). The groundwater resources and urban water supply should be augmented by rainwater harvesting and artificial recharge to the groundwater(Shekhar, Purohit and Kaushik, 2009). Rainwater Harvesting efforts can lead to the rise of the water table (Sanghamitra, 2015). It will reduce the burden on urban supply & groundwater and would also utilize the water which goes waste as runoff. The study attempted to estimate the Rainwater Harvesting Potential of Institutional Buildings & Government Offices and find potential storage locations in Keshavpuram Area in North-West Delhi using Geographic Information System (GIS) and Remote Sensing techniques. Building Footprint data was captured for North-West Delhi. Keshavpuram zone was selected as it had a higher number of Institutions & Government Offices compared to other zones as per the Open Street Maps Data and hence higher potential for capturing Rainwater. Land Use Land Cover Map was prepared for Keshavpuram and Depressions were identified to find potential storage locations for the harvested water. Haiderpur Badli Modh slum’s water demand was calculated for the people who did not have a Household connection and assessment was done to supply the harvested water. Ward wise Water Demand of North-west Delhi was prepared where demand ranged between 22584.15 KLD (highest) to 11251.98 KLD (lowest). The total RWH Potential of the Study Area is 92.03 Mega Litre. If the Rainwater Harvesting practices are followed then the the same volume of water would be reduced from urban supply and hence the pressure on urban supply would be reduced. All the Institutional buildings & Government Offices in the study area would be able to satisfy 77.39 % demand of the slum whereas Potential buildings near & inside the slum would be able to satisfy 21.88% demand of the slum.
Keywords: Rooftop Rainwater Harvesting, Geographic Information System (GIS) and Remote Sensing techniques, Water Scarcity, Keshavpuram, Slum.
