The Indus delta is one of the largest mangrove forests in the world. Over 600,000 hectares of Pakistan’s coastline is under mangrove vegetation. Mangrove management is a complex task because of its geographic conditions. The synoptic coverage, multi spectral recording and its repetitiveness, Satellite remote sensing can be useful in the measurement of the areal extent of mangrove forest. Landsat TM 1989 and Landsat ETM+ 2001 images are used for this study. The main objective of this study is to identifying mangrove distribution and land use/ cover changes along the coastline near Karachi and its adjoining deltaic region. Landsat data is subjected to digital techniques through un-supervised classification approach on a combined enhanced image which includes Normalized Difference Vegetation Index (NDVI), Principal Components and Tasseled Cap Transformation techniques. Image differencing method is used for monitoring mangrove land use change in the study area. The analysis shows that mangrove forest of the study area has not changed dramatically.