The deterioration of Wetlands has become a devastating issue in the current scenario. Wetland, being the source for several species is a major Biodiversity which is under extreme danger. These wetlands also play a major role in flood control and in groundwater recharge. The major cause for this problem is Urbanization and Industrialization. The change caused in these wetlands reflects on its biodiversity which depletes the natural resources in and around the area. Based on its extent of deterioration, respective remedial measures might be taken to replenish the environment and in saving the endangered species. This could be achieved by the help of several LANDSAT images from USGS and with the help of remote sensing software ArcGIS. This project shows various wetland maps for Pallikaranai from 2008 – 2018, compares the rate of depletion/expansion of wetland’s water surface area and identifies the variation in dump yard area in the Pallikaranai wetland. The results indicate that there was a significant increase in the dump yard area land.