GATE 2024 AG – Question 16

Irrigation and Drainage Engineering · Irrigation Water Conveyance and Application Methods · 1 mark · Multiple choice

The time difference between advance and recession curves at a point during surface irrigation is called

Time of concentration
Lag time
Time to peak
Intake opportunity time

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Show answer and explanation

Correct answer: (D) Intake opportunity time

Explanation

Advance time marks arrival of surface water at a location; recession time marks its disappearance. Their difference is the duration water is available there for infiltration, called intake opportunity time. It is a local irrigation duration rather than a catchment hydrograph time. Thus **D**.

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