The Volga Delta is the largest river delta

River delta

A delta is a landform that is formed at the mouth of a river where that river flows into an ocean, sea, estuary, lake, reservoir, flat arid area, or another river. Deltas are formed from the deposition of the sediment carried by the river as the flow leaves the mouth of the river...

 in Europe

Europe

Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

, and occurs where Europe's largest river system, the Volga River

Volga River

The Volga is the largest river in Europe in terms of length, discharge, and watershed. It flows through central Russia, and is widely viewed as the national river of Russia. Out of the twenty largest cities of Russia, eleven, including the capital Moscow, are situated in the Volga's drainage...

, drains into the Caspian Sea

Caspian Sea

The Caspian Sea is the largest enclosed body of water on Earth by area, variously classed as the world's largest lake or a full-fledged sea. The sea has a surface area of and a volume of...

 in Russia

Russia

Russia or , officially known as both Russia and the Russian Federation , is a country in northern Eurasia. It is a federal semi-presidential republic, comprising 83 federal subjects...

's Astrakhan Oblast

Astrakhan Oblast

Astrakhan Oblast is a federal subject of Russia . Its administrative center is the city of Astrakhan.-Demographics:Population: Ethnic groups...

, north-east of the republic of Kalmykia

Kalmykia

The Republic of Kalmykia is a federal subject of Russia . Population: It is the only Buddhist region in Europe. It has also become well-known as an international chess mecca because its former President, Kirsan Ilyumzhinov, is the head of the International Chess Federation .-Geography:*Area:...

. The delta is located in the Caspian Depression

Caspian Depression

Caspian Depression or Pricaspian/Peri-Caspian Depression/Lowland is a low-lying flatland region encompassing the northern part of the Caspian Sea, the largest enclosed body of water on Earth. It is the larger northern part of the wider Aral-Caspian Depression around the Aral and Caspian seas.The...

—the far eastern part of the delta lies in Kazakhstan

Kazakhstan

Kazakhstan , officially the Republic of Kazakhstan, is a transcontinental country in Central Asia and Eastern Europe. Ranked as the ninth largest country in the world, it is also the world's largest landlocked country; its territory of is greater than Western Europe...

. The delta drains into the Caspian approximately 60 km downstream from the city of Astrakhan

Astrakhan

Astrakhan is a major city in southern European Russia and the administrative center of Astrakhan Oblast. The city lies on the left bank of the Volga River, close to where it discharges into the Caspian Sea at an altitude of below the sea level. Population:...

.

The Volga Delta has grown significantly in the past century because of changes in the level of the Caspian Sea.