It’s a fact that a significant amount of the water we consume is sourced from impoundments primarily feed the primacy of water quality is alert in urbanites. A digitized plethora of future water access processes exists. The digitization works in accordance with a timesaving, cost, storage idea Ans earth remote sensing holds up in all criteria. With the broad deployment of Google earth engine, image-based extraction was widely adopted due to high-tech data availability. Millions of images with billions of pixels access indicate platform band classifier. Google cloud Engine uses much computing power in all Envi-events. This study discusses various classifiers available in cloud engines to check out the urban reservoirs’ long-term research by considering various facets of water. Large scalable & super cloud computing in pure water affects nearby cities. Hence, urban water dynamics need water-efficient management. The aforesaid study will help urban water alert researchers to study water resource index.