Krishna Raja Sagara (KRS) Dam is built across which river?
a) Krishna
b) Kaveri
c) Godavari
d) Tungabhadra
Answer: b) Kaveri
Explanation
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Krishna Raja Sagara (KRS) Dam: Named in honor of the then-Ruler of Mysore, Krishnaraja Wadiyar IV, this iconic gravity dam is built across the Kaveri River (Cauvery).
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Location: Situated just downstream of the confluence of the Kaveri with its tributaries Hemavathi and Lakshmana Thirtha, near the village of Kannambadi in the Mandya district of Karnataka (close to Mysuru).
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Architectural & Engineering Significance:
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Designed by the legendary Indian engineer Sir M. Visvesvaraya and completed in 1931.
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It features unique automated siphon spillway gates designed to handle sudden flood surges automatically without manual operation.
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Purpose: The reservoir provides critical irrigation water for agricultural lands in Mandya and Mysuru districts, as well as supplying drinking water to Mysuru and Bengaluru.
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Brindavan Gardens: The world-famous terraced garden built immediately downstream of the dam adds to its prominence as a major tourism landmark.
Overview of Other Options
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a) Krishna: A major peninsular river flowing east into the Bay of Bengal; major dams on it include Almatti and Srisailam, but not KRS.
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c) Godavari: The longest river in peninsular India; major dams on it include Jayakwadi and Polavaram.
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d) Tungabhadra: A major tributary of the Krishna River; famous for the Tungabhadra Dam built across it at Hosapete (Hospet) in Karnataka.
