How do the Volga River delta and other river deltas shape the northern Caspian coast?

The northern coast of the Caspian Sea is characterized by its low-lying topography, which is primarily shaped by the significant accumulation of alluvial material deposited by inflowing rivers.1

The Volga River, along with the Ural and Terek rivers, plays a central role in this process. These rivers form extensive deltas that define the northern shoreline's features. Because these rivers account for approximately 88 percent of the total river water entering the Caspian Sea, their sediment discharge is the primary driver of the coastal landscape in the north. This process results in a shallow northern basin coated with recent, finely grained sediments.12