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The Coimbatore is a fast expanding city with state of Tamil Nadu. Because of rapid growth in the Urbanization and Industrialisation, slums were generated inside and out side the city limits. Slums are missance to the society. It poses various environmental problems. The haphazard growth of the slums deteriates the environment. In order to monitor the spatial distribution and growth of the slum Aerial photographs taken during different periods were interpolated from interpreted map we can analyse the spatial distribution and growing and suitable remedial action could be taken by the city planners to arrest the growth of the slums. The Aerial photographs proved to be a valuable tool for this type of studies and it can be updated with the high resolution satellite data like ikonos in the coming years.