- To the east and west of the peninsular plateau, two narrow strips of plain lands are found , which are respectively called Eastern Coastal Plain and Western Coastal Plain.
- Eastern Coastal and Western Coastal Plain are formed by the erosional and depositional & activities of the Sea waves and from the sediments brought by the peninsular rivers.
Western Coastal plain
- Westeren coastal plain is 10 to 15 km wide and is narrower than eastern coastal plain.
- Western coast is divided into 4 parts:
- Kathiawar coast (Gujarat coast)
- Konkan coast (Maharstra coast)
- Canara coast(Karnataka coast)
- Malabar coast (Kerala coast)
- The Gujarat coastal plains are built up by alluvium brought by Sabarmati, Mahi, Narmada and Tapti rivers, all of which form large estuaries.
- Malabar coast contains lakes, lagoons and backwaters locally called Kayals.
- Vembaned Lake (Kerala) is largest of such back water lakes.
Eastern Coastal plain
- Eastern coastal plain is 50 to 60 km wide and is broader than western coastal plain
- The eastern coast is mainly emergent type i.e. its outline is regular and is characterized by offshore bars, sea beaches, sand ridges and lagoons.
- Tamil Nadu coast is called Coromandel coast while Odisha and West Bengal coast is called Northern Circar coast.
- Most of the east flowing rivers follow zig-zag path and are more border as compared to west flowing rivers. So, these east flowing rivers from delta where as west flowing rivers (like Narmada and Tapti) from estuary.
- For example: Sunderbans delta of Ganga-Bhramaputra in West Bengal, Mahanadi delta, Godavari delta etc.
- Region of Mahanadi delta is called Utkal Plain.
Difference between Western and Eastern Coastal plain.
S.No |
Western Coastal plain
|
Eastern Coastal plain
|
---|---|---|
1 | Dissected outline | Smooth outline |
2 | Occurrence of estuaries | Occurence of deltas |
3 | More rainfall | Less rainfall |
4 | Narrower | Braoder |
5 | Small rivers | Long rivers |
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