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.
Delta River Delta River The Delta River is an tributary of the Tanana River in the U.S. state of Alaska. Its name in the Ahtna language is "Saas Na’ ". Fed by the Tangle Lakes of the Alaska Range, the river flows north to meet the larger river near Big Delta. In 1980, of waterways in the Delta River basin, including all of the Tangle Lakes and the main stem to within of Black Rapids became part of the National Wild and Scenic Rivers System. Of this, are designated "wild", "scenic", and "recreational". Easily accessible from the boat launch at the Tangle