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.
Yukon–Kuskokwim Delta Yukon–Kuskokwim Delta The Yukon–Kuskokwim Delta is a river delta located where the Yukon and Kuskokwim rivers empty into the Bering Sea on the west coast of the U.S. state of Alaska. At approximately in size, it is one of the largest deltas in the world. It is larger than the Mississippi River Delta (which varies between ), and comparable in size to the entire U.S. state of Louisiana (). The delta, which consists mostly of tundra, is protected as part of the Yukon Delta National Wildlife Refuge. The delta has approximately 25,000 residents. 85% of these are Alaska Natives: Yupik