The Delta River is a tributary of the Tanana River, which in turn is a tributary of the Yukon River in Alaska in the United States.
The river runs from the south to the north about 256 km (160 miles), being fed by numerous streams and 21 lakes. It meets the Tanana River near Big Delta, in a huge river delta, from which it received its name.
A delta is a triangular shaped landform where the mouth of a river flows into an ocean, sea, desert or lake, building outwards (as a deltaic deposit) from sediment carried by the river and deposited as the water current is dissipated.
Deltaic deposits of larger, heavily-laden rivers are characterised by the river channel dividing into multiple streams (distributaries), these divide and come together again to form a maze of active and inactive channels.
Other rivers with notable deltas include the Ganges/Brahmaputra combination (this delta spans most of Bangladesh and West Bengal), the Niger, the Amazon, the Mississippi, the Sacramento-San Joaquin, the Rhine, the Rhône, the Danube, the Ebro, the Volga, the Lena, the Tigris-Euphrates, the Indus, the Krishna-Godavari, the Kaveri, the Ayeyarwady, and the Mekong.
A delta is the mouth of a river where it flows into an ocean, sea, or lake, building outwards (as a deltaic deposit) from sediment carried by the river and deposited as the water current is dissipated.
Deltaic deposits of larger, heavily-ladden rivers are characterised by the river channel dividing into multiple streams (distributaries), these anastomizing (dividing and coming together again) to form a maze of active and inactive channels.
The most famous delta is that of the NileRiver, and it is this delta from which the term is derived, because the Niledelta has a very characteristic triangular shape, like the (upper-case) letter delta (Δ).
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