मराठी
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 10

Means of Irrigation - Tank Irrigation

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CISCE: Class 10

Key Points: Tank Irrigation

  • Tank irrigation stores rainwater in natural or artificial depressions by building earthen or masonry bunds.
  • It is common in the Deccan Plateau (Tamil Nadu, Andhra Pradesh, Telangana, Karnataka) due to uneven land, hard rock and seasonal rivers.
  • Advantages: It conserves rainwater, raises groundwater level, is cheap to construct and supports irrigation and drinking water supply.
  • Disadvantages: Tanks lose water by evaporation, depend on monsoon, get silted quickly and are mostly non-perennial.
  • Tank irrigation is useful where wells and canals are difficult, but needs regular desilting and proper maintenance.
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