Rainwater harvesting in the Western Himalayas was traditionally done through:
AKuls and guls (diversion channels)
BKhadins
CTanka cisterns
DEri tanks
Answer & Solution
Correct answer: A. Kuls and guls (diversion channels)
1. KULS and GULS are diversion channels in Himachal Pradesh, Uttarakhand and Jammu & Kashmir for agricultural irrigation.
2. Khadins are in Rajasthan (embanked depressions for moisture).
3. Tankas are underground cisterns in Bikaner/Phalodi/Barmer.
4. Eri tanks are traditional irrigation tanks of Tamil Nadu.
_Source: NCERT Class 10 SST Geography Ch 3 §3.5 Rainwater Harvesting_
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