Delta Landform Project

Definition

  • Flat low lying land at the mouth of a river built up by soil brought downstream.

Examples From Around the World

A)  Deltas in the United States

1)  The Colorado River Delta:  The Colorado River Delta is the region of land where the Colorado River historically flowed into the Gulf of California. The interaction of the river’s flow and the ocean’s tide created a dynamic environment, supporting freshwater, brackish, and saltwater species. Within the delta region, the river split into multiple braided channels and formed complex estuary and terrestrial ecosystems.
The Colorado River Delta as seen from space in 2004
 

Related Links on the Internet

2)  The Mississippi River Delta
The Mississippi River Delta is the modern area of land built up by alluvium deposited by the Mississippi River as it slows down and enters the Gulf of Mexico. The deltaic process has, over the past 5,000 years, caused the coastline of south Louisiana to advance gulfward from 15 to 50 miles.

False color image of the Mississippi Delta.



The Mississippi River Delta, showing the sediment plumes from the Mississippi and Atchafalaya Riltaic Rivers.

Related Links on the Internet



B)  Deltas in Europe

1)  Volga Delta:  The Volga Delta is the largest inland river delta in Europe, and occurs where Europe's largest river system, the Volga River, drains into the Caspian Sea.  The delta is located in the Caspian Depression and the far eastern part of the delta lies in Kazakhstan. The delta drains into the Caspian approximately 60 km downstream from the city of Astrakhan.
 
 


2)  The Danube DeltaThe Danube Delta is the second largest delta in Europe, after the Volga Delta, and the best preserved on the continent. The greater part of the Danube Delta lies in Romania, while its northern part, on the left bank of the Chilia arm, is in Ukraine.
 
 

C)  Deltas in Africa

1)  The Nile DeltaThe Nile River Delta is the delta formed in Northern Egypt where the Nile River spreads out and drains into the Mediterranean Sea. It is one of the world's largest river deltas from Alexandria in the west to Port Said in the east, it covers some 240 km of Mediterranean coastline—and is a rich agricultural region. From north to south the delta is approximately 160 km in length. The Delta begins slightly down-river from Cairo.

 NASA satellite photograph of the Nile Delta (shown in false color)
 Nile River and delta



List of Deltas

  • Camargue (Rhône River Delta)
  • Colorado River Delta
  • Danube Delta
  • Eberswalde (crater) Mars (ancient delta)
  • Ebro River
  • Fraser River Delta
  • Ganges-Brahmaputra Delta
  • Indus River Delta
  • Chao Phraya River Delta
  • Lena Delta
  • Mackenzie River
  • Mekong Delta
  • Mississippi River Delta
  • Niger Inland Delta (inland delta)
  • Niger River Delta (Oil Rivers)
  • Nile Delta
  • Ogowe Delta
  • Okavango Delta (inland delta)
  • Orinoco Delta
  • Paraná Delta
  • Parnaíba Delta
  • Peace-Athabasca Delta (inland)
  • Pearl River Delta
  • Po Delta
  • Rio Grande Valley
  • Rhine-Meuse-Scheldt Delta
  • Sacramento-San Joaquin River Delta (inverted delta)
  • Volga Delta
  • Yangtze River Delta
  • Yukon Delta
  • Tanjore Delta, Kaveri river


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