River delta The Okavango Delta in Botswana is one example. The generic term "mega delta" can be used to describe very large Asian river deltas, such as the Yangtze, Pearl, Red, Mekong, Irrawaddy, Ganges-Brahmaputra, and Indus. The formation of a delta is complicated, multiple, and cross-cutting over time, but in a simple delta three main types of bedding may be distinguished: the bottomset beds, foreset/frontset beds, and topset beds. This three part structure may be seen in small scale by crossbedding. The Ganges/Brahmaputra combination delta, which spans most of Bangladesh and empties into the Bay of Bengal, is the world's largest delta.
Indus River Delta of the population in the active delta depend on the fishing industry. The population suffers from the lack of health facilities and medical staff. Only about a third of the population has access to clean drinking water. Ethnic groups of lower Sindh can be found in the delta region: Mallaah, Mohano, Soomro, Samma and Jat. All of these groups speak Sindhi and follow Islam. The delta falls within the districts of Thatta and Badin of the Sindh province. Pakistan's fifth largest city, Hyderabad, lies about 130 miles north of the mouths of the Indus. Towns are found throughout the delta,