How the Kosi’s shifting course exposes the perils of embankments
GS3Economy · S&T · Environment · Security· Climate change & international agreements· Mains·
Why in news
The debate over the efficacy of concrete embankments in the Kosi River basin highlights the conflict between engineered flood protection and natural drainage patterns.
Background
The Kosi River basin is facing scrutiny regarding the impact of concrete embankments on flood protection. Critics argue these structures may increase vulnerability by altering natural drainage and exacerbating soil erosion.
Facts for Prelims
- FactConcrete embankments: Engineered structures used to mitigate flooding in river basins
For Mains
Q. Critically analyze how rigid engineering interventions like concrete embankments can exacerbate flood risks in river basins like the Kosi, and suggest nature-based alternatives.
Dimensions to cover in your answer
- Hydrological disruption: Alteration of natural drainage patterns leading to increased downstream flood velocity
- Geomorphological impact: Accelerated soil erosion and sediment transport changes due to fixed river boundaries
- Policy trade-off: Immediate flood protection via embankments vs. long-term ecological stability of riverine ecosystems
Keywords: riverine geomorphology · flood mitigation · human-environment interaction · soil erosion · nature-based solutions
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This note is generated automatically from SatyaDheesh's news feed and mapped to the UPSC CSE syllabus. Check facts against the original report or PIB before using them in an answer.