The study by cegis on the morpho-dynamics of the Brahmaputra- Jamuna river was conducted using time series satellite images. This involved the selection of the following criteria for drawing the bank line of the Jamuna river:

• The line separates the floodplain from the riverbed

• All sand bodies are part of the riverbed, except the crevasse splays (the coarse sediment that spreads over the floodplain during floods by overtopping the banks)

• Vegetated land bound by the outflanking channel, the width of which is more than 100 metres, is part of the riverbed