Major river of India and Bangladesh; length 2,510 km/1,560 mi. It is the most sacred river for Hindus. Its chief tributary is the Jumna (Yamuna length 1,385 km/860 mi), which joins the Ganges near Allahabad, where there is a sacred bathing place. The Ganges is joined in its delta in Bangladesh by the river Brahmaputra, and its most commercially important and westernmost channel to the Bay of Bengal is the Hooghly. The political leaders M K Gandhi, Nehru, and Indira Gandhi were all cremated on the banks of the Jumna at Delhi. The area regularly flooded in the wet season has almost doubled, and the annual cost of flood damage has risen to $1 billion as a consequence of deforestation of the Ganges watershed, which has also decreased the river's flow in the dry season by 20%.