Ganges Delta

The Ganges Delta covers the entirety of Nadia, Kolkata, North 24 Parganas, and South 24 Parganas districts, and the eastern half of Murshidabad district. The Ganges passes through this vast area and divides into three distinct parts: the old delta, the mature delta, and the active delta. 

Ganges river delta, in Bangladesh and India.

The old delta consists of the districts of Murshidabad and Nadia. The formation of delta is complete and the rivers here are heavily silted and many have even dried up over time. Silted rivers, swamps, beels, and oxbow lakes form the area. This area is also known as Bagri region. 

The districts of Kolkata and North 24 Parganas form mature delta region. The rivers are slow and meandering and frequently shift their courses. Swamps, beels, and oxbow lakes characterise the scenery. The district of South 24 Parganas is known to be the active delta of the Ganges, where the formation of the delta is still an ongoing process.