The 'gross command area' (GCA) of a canal differs from 'cultivable command area' (CCA) in that:
Choose the correct answer
GCA = CCA always
GCA is total area within project; CCA excludes uncultivable land — CCA ≤ GCA
GCA is for rabi only; CCA is for kharif only
CCA includes waterlogged land
Correct Answer
B. GCA is total area within project; CCA excludes uncultivable land — CCA ≤ GCA
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GCA = total area within the boundary of an irrigation project. CCA = area within GCA which is suitable and can be cultivated (excludes roads, ponds, settlements, uncultivable land). CCA typically = 50–85% of GCA. Intensity of irrigation (I) = irrigated area / CCA × 100%. Design of canals based on CCA.
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