Ganges Delta Ganges Delta The Ganges-Brahmaputra Delta (also known as the Brahmaputra Delta, the Sunderbans Delta or the Bengal Delta) is a river delta in the Bengal region of the Indian subcontinent, consisting of Bangladesh and the Indian state of West Bengal. It is the world's largest delta and empties into the Bay of Bengal the combined waters of several river systems, mainly those of the Brahmaputra river and the Ganges river. It is also one of the most fertile regions in the world, thus earning the nickname The Green Delta. The delta stretches from the Hooghly River on the west to
Saskatchewan River Delta such that normally high spring and summer flows are significantly diminished. Removal of sediment outflow by impoundment has caused enlargement of channels downstream of the dam and reduction of sediment-borne nutrients to the delta ecosystem. In addition, suppression of annual discharge peaks has reduced the frequency of overbank flooding and, consequently, the frequency at which water and nutrients are replenished in the delta wetlands. Reduction of peak flows to the delta is exacerbated by the Gardiner dam on the South Saskatchewan River whose impoundment, Lake Diefenbaker, is nearly five times larger than the Tobin Lake reservoir, with a commensurately larger