This book has been designed considering differentaspects of environment viz. topography, hydrology,sedimentology & vegetation consists of geomorphicstructure, river hydraulics, vegetation status. Mostof study is based on primary data collected form thecoastal district Cox's Bazar, Bangladesh which has the world'slongest sea beach and a place of great attraction oftourists from different parts of the world. Information has provided here will be very helpful forprofessionals to develop coastal policy which is veryessential for sustainable environmental management in coastal area.