In an irrigation project, the Culturable Command Area (CCA) is defined as
- AThe total area that can be economically irrigated, including barren lands and forests
- BThe area within the gross command area that is fit for cultivationCorrect
- CThe area that is actually irrigated during a particular crop season
- DThe area occupied by the canal network and supply ditches
Solution
Concept
Culturable command area definition in irrigation planning
Formula
CCA = GCA - Unculturable Area
Step-by-step solution
1. The Gross Command Area (GCA) is the total geographical area bounded within the irrigation canal perimeter. 2. GCA includes culturable and unculturable land (roads, ponds, forests, barren land, villages). 3. Culturable Command Area (CCA) is obtained by deducting unculturable areas from GCA. 4. Hence, CCA represents the area within the gross command area that is fit for cultivation. Answer: B
Explanation
Culturable Command Area (CCA) is defined as the portion of the gross command area (GCA) that is economically and physically fit for cultivation. It is obtained by subtracting unculturable areas such as forests, barren lands, ponds, roads, and residential settlements from the gross command area.
Why the other options are wrong
A) Barren lands and forests are unculturable areas explicitly excluded from CCA. C) Area actually irrigated is the Net Sown/Irrigated Area. D) Area occupied by canal works is non-culturable infrastructure.
Shortcut
CCA = Gross Command Area minus uncultivable land (forests, ponds, barren tracts).
Common mistake
Confusing CCA with the actual irrigated area during a specific crop season (which is the net irrigated area).
Correct answer: B) The area within the gross command area that is fit for cultivation