An inverted river delta is special category of river delta in which the narrow end of the delta is located at the point of outflow of the delta, rather than the point of inflow. Nile River delta, as seen from Earth orbit. ...
In a typical river delta, the narrow end of the delta is located at the point where a rivers enter a delta, with a wide fan-shaped sedimentation region extending outward into the body of water into which the river empties. In some rare cases, most notably in the case of the Sacramento River Delta, at the confluence of the Sacramento and San Joaquin Rivers in California, the delta is located at the waterway's exit from a large, flat valley, yet still inside the valley. The sediment is dropped within the valley and the clear water then exits into a bay or the ocean, so the apex of the delta is at this exit, a configuration said to be inverted from that usually seen. The Sacramento Delta. ... A spring at the Sacramento River headwater The Sacramento River is the longest river in the state of California. ... The San Joaquin River is one of the largest rivers in the state of California. ... State nickname: The Golden State Other U.S. States Capital Sacramento Largest city Los Angeles Governor Arnold Schwarzenegger Official languages English Area 410,000 km² (3rd) - Land 404,298 km² - Water 20,047 km² (4. ... Something that is inverted is something that is flipped over, around or otherwise appearing in an opposite manner than is normal, customary, or common. ...
Another example is the delta of Tagus river, in Portugal, although due to the sedimentation this delta is now only very partially inverted, since the valley is now mostly filled with sediments. It's still about 15km wide and 25km long, compared with the 2km wide exit into the sea, and forms a large lagoon with large very shallow sand banks which go uncovered during low tides. It used to be even bigger thousands of years ago. View over Tejo River from São Jorge Castle in Lisbon (June 2002). ...
Inverted deltas typically do not last long in geological terms, since they tend to fill up with sediments rather quickly and eventually become normal deltas.
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-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), 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 Irrawaddy, and the Mekong.
An invertedriverdelta is special category of riverdelta in which the narrow end of the delta emerges on the seafront and the wide end is located further inland, so that with respect to the seafront, the locations of the either end of the delta are inverted.
In a typical riverdelta, the narrow end of the delta is located at the point where a river enters a delta, with a wide fan-shaped sedimentation region extending outward into the body of water into which the river empties.
In some rare cases, most notably in the case of the SacramentoRiverDelta, at the confluence of the Sacramento and San Joaquin Rivers in California, the delta is located at the waterway's exit from a large, flat valley, yet still inside the valley.
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