Coastal plains are spread along with Arabian Sea and Bay of Bengal. They can be divided in two parts-Western coastal plains and Eastern coastal plains.
| Western Coastal Plain |
Eastern Coastal Plain |
| 1. West Coast is a narrow alluvial plain with a width of 50-80 kms. It is uneven and wet. |
1. The Eastern Coast has a wide plain with well developed delta 80 to 120 km. wide. It is level and dry. |
| 2. Beautiful lagoons are found on the Malabar Coast. |
2. The Eastern Coast has only two or three lagoons. |
| 3. The short swift rivers do not make any deltas on the Western Coast. The Tapti and Narmada make estuaries. |
3. The large rivers make wide deltas on the Eastern Coast. Mahanadi, Godavari, Krishna, Cauvery make well-developed deltas. |
| 4. Kandla, Mumbai, Marmagao, Mangalore and Cochin are major ports on West’coast. |
4. Tuticorin, Chennai, Vishakhapatnam, Paradeep and Kolkata are major ports on the East coast. |
| 5. Western Coastal plains receive rainfall in summer season due to advancing monsoon winds. |
5. Many of the Eastern coastal plain areas recieve winter rainfall due to retreating monsoon winds. |
