Repetitive topic in APSC prelims
The southern part of Nagaon district in central Assam valley and adjoining parts of Karbi Anglong form a rain-shadow zone where annual rainfall is as low as 800-1200mm. Water scarcities are a potential constraint for the people living in this rainshadow zone and absence of effective irrigation systems or water harvesting practices adds to the vulnerability of the people. But what is of immediate concernis that rainfall in this zone is decreasing slowly. As a result water crisis might aggravate in this region in the coming years.
The area situated on the leeward side, which gets less rainfall is known as the rain-shadow area.
Other examples
Regions → Zaskar range, parts of Punjab and Haryana, Central Rajasthan, Western Gujarat and the rain-shadow areas of the Western Ghats .
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