Estuary Formation in India
Estuaries are formed where rivers meet the sea, creating a unique ecosystem that is influenced by both freshwater and saltwater. In India, the Narmada River forms the estuary.

Narmada River
The Narmada River is one of the major rivers in central India that flows westward into the Arabian Sea. As it nears the coast, the Narmada River widens and forms an estuary where it meets the sea.

Estuary Characteristics
- An estuary is a semi-enclosed coastal body of water where freshwater from rivers mixes with saltwater from the sea.
- Estuaries are important habitats for various species of plants and animals, providing a rich and diverse ecosystem.
- They also serve as breeding grounds for many marine species and are important for the overall health of coastal environments.

Significance of Estuaries
- Estuaries help filter pollutants from freshwater sources before they reach the ocean, improving water quality.
- They also act as buffers against coastal erosion and storm surges, protecting inland areas from the impact of natural disasters.
- Estuaries are important for fisheries, as they provide a nutrient-rich environment that supports a variety of marine life.
In conclusion, the Narmada River forms the estuary in India, playing a crucial role in maintaining the biodiversity and ecological balance of the coastal region where freshwater meets the sea.

The Narmada River forms the estuary in India.