Abstract
ABSTRACT Urbanization and water resources are in a constant state of strife. With escalating priority given to real estate water needs, the global water resources have witnessed a decline. Consequently, planned locales like New Town (Rajarhat) in West Bengal (India) are in dire need of alternative water resources to supplement the present water supplies without adversely affecting the environment. An attempt is made here to propose an alternative urban runoff harvesting system, using road-wash water to fulfil the water demands of construction, vehicular washing, gardening, firefighting, etc. For this purpose, impervious surfaces including road surfaces have been identified using Sentinel2A imagery, following which the highest density road areas have been identified for designing a prospective road-wash harvesting and injection well model. The dimensions generated from this study suggest that 8000 m3 of water may be stored in eight such prospective design units, which will reduce water footprints and even recharge aquifers once implemented.
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