The Eastern Coastal Plains refers to a wide stretch of landmass of India, lying between the Eastern Ghats and the Bay of Bengal. It is wider and leveled than the western coastal plains and stretches from Tamil Nadu in the south to West Bengal in the north through Andhra Pradesh and Odisha. Chilka Lake is a brackish water lake along the eastern coastal plain. It lies in the state of Odisha and stretches to the south of the Mahanadi Delta.
Deltas of many of India’s rivers form a major portion of these plains. The Mahanadi, Godavari, Kaveri and Krishna rivers drain these plains. The region receives both the Northeast & Southwest monsoon rains with its annual rainfall averaging between 1,000 mm (40 in) and 3,000 mm (120 in). The width of the plains varies between 100 and 130 km (62 to 80 miles).
It is locally known as Northern Circars in the northern part between Mahanadi and Krishna rivers and Coromandel Coast in the southern part between Krishna and Kaveri rivers.
East coast plain is broadly divided into
- Coromandel Coast: Ranges from Kanyakumari in Tamil Nadu to False Divi Point in Andhra Pradesh, which is just at the apex of the Krishna River delta.
- The region between the Krishna and Mahanadi for which an old term Northern Circars is sometimes used. Some classify it as Andhra Pradesh coastal plains.
- Mahanadi Delta: Another broader term used is Utkal Coast, which also includes the Chilika Lake.