Introduction / Context:
Large river-valley projects in monsoon climates aim to smooth water availability across seasons and provide multiple co-benefits. This classic civics/geography question checks recognition that such projects are “multi-purpose,” not single-purpose, infrastructure investments.
Given Data / Assumptions:
- Monsoon creates surplus in rainy season and scarcity in dry months.
- Major dams can deliver irrigation, power, flood moderation, and navigation improvements.
- Ancillary benefits may include fisheries, recreation, and regional development.
Concept / Approach:
“Multi-purpose” explicitly signals more than one objective. The listed goals—irrigation storage and release, hydropower generation, and flood control/navigation—are all canonical functions of such projects. Therefore, “All of the above” best captures the breadth of purposes served by these schemes in planning literature and exam keys.
Step-by-Step Solution:
Confirm each listed function is standard: irrigation ✓, hydropower ✓, flood control/navigation ✓.Since all are valid, choose the inclusive option.
Verification / Alternative check:
Project brochures and planning documents for Bhakra–Nangal, Damodar Valley Corporation, and Hirakud enumerate these very objectives, affirming the all-inclusive choice.
Why Other Options Are Wrong:
Any single item (a, b, or c) understates the “multi-purpose” nature.
Common Pitfalls:
Assuming “power” dominates; in agrarian economies, irrigation and flood attenuation are equally central.
Final Answer:
All of the above
Discussion & Comments