UPSC 2013 Mains GS1 Model Answer - There is no formation of deltas by rivers of the Western Ghats. Why?
MA
•Mayuri
Feb, 2025
•1 min read
Q22b. There is no formation of deltas by rivers of the Western Ghats. Why?
Model Answer:
Introduction
Deltas typically form where rivers meet standing water bodies, allowing sediment deposition. The Western Ghats' rivers exhibit unique characteristics, inhibiting delta formation.
Body
Factors behind no delta by Western ghat rivers:
- Topography: The Western Ghats have steep gradients, leading to rapid river flow. This prevents sediment accumulation necessary for delta formation in coastal zones.
- River Dynamics: Rivers originating from the Western Ghats are primarily torrential, resulting in high-energy flows that transport sediments offshore instead of depositing them.
- Geological Structure: The geological makeup of the Western Ghats, consisting of hard rocks, limits the availability of easily erodible sediment required for delta development.
- Coastal Configuration: The coast along the Western Ghats features rocky shores and cliffs, which hinder sediment deposition, contrasting with typical deltaic environments found elsewhere.
- Tidal Influence: The rivers flow into areas with significant tidal action, causing sediment to be swept away rather than deposited, further preventing delta formation.
Conclusion
The unique geomorphology, river dynamics, and coastal features of the Western Ghats create conditions unsuitable for delta formation, distinguishing them from typical river systems.
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