The capital of Bangladesh, Dhaka, is one of the fastest growing megacities in the world. More than 77% of Dhaka has been urbanized. Wetlands are disappearing drastically because of increased residential, commercial and industrial activities. City scale wetlands preservation or artificial wetland creation is a widely implemented adaptation strategy worldwide as it helps in storm water management, urban flood prevention, increased climate resilience, biodiversity protection, water purification and creating provision for raw materials.