bodies are all that remain as flood relief lines in Kolkata according to a joint study by International Water Management Institute (IWMI) and South Asian Forum for Environment (SAFE). The bodies are: Adi Ganga-Tolly canal and peri-urban wetlands of eastern Kolkata.
of peri-urban wetlands have been lost in the decade 2005-2015.
of the stretch of Adi Ganga has been severely restricted below the average environmental flow volume. Shrinkage in wetlands and restriction of the canal means during times of heavy rainfall or slight rise in sea levels, water will have no where to go!
drop in flood-resilience efficacy of the wetlands due to heavy siltation and land-use changes due to rapid urbanisation.
Position of Kolkata city on a World Bank and University of Leeds list of cities most prone to flood risks and climate disasters.
of torrential rainfall in the year 2020 will fully submerge Kolkata, if the situation is not reversed, the study concluded.
of the city's population currently resides in high flood risk zone. These include wards: 14, 57, 58, 63, 66, 67, 74, 80 and 108.