Time to check salinity intrusion in the Sundarbans Mohammad Asrafur Rahman Sundarban Mangrove forest of Bangladesh covers an area of about 6017 sq. km which is 62 percent of its total area whereas other 38 percent is situated in the West Bengal province of India. The average elevation from the mean sea level varies between 0.9 and 2.1 m. The rise in sea level and availability of less fresh water particularly during winter will cause inland intrusion of saline water.