Overgrowth of water hyacinth in Kaptai Lake has been hampering water transport operation in Rangamati. Movement of trawlers and boats is being disrupted due to overgrowth of water hyacinth in many parts of the lake in Kaptai upazila, Shahid Shamsuddin Ghat, and Kengrachari of Bilaichari upazila in Rangamati. Students and