Urban areas are generally marked by overcrowding, congestion, inadequate facilities to support the fast-growing population and consequent poor sanitary conditions and foul air. Environmental pollution by solid wastes has now got significant because of the enormous growth in the quantity of waste generated from various sources.

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National Remote Sensing Centre

National Remote Sensing Centre (NRSC) has classified wastelands by using remote sensing techniques and it is possible to categorise these wastelands according to the processes that have created them.