GATE AG 2017 • Q13 NAT • 1 Mark

Section 4: Soil and Water Conservation Engineering

Hydrology

Subtopic: Analysis of precipitation data

Question Statement:

Antecedent Moisture Conditions (AMC) for a soil are defined on the basis of total rainfall occurred during previous _____ days.

Official Answer Key:

5 to 5

Step-by-Step Solution & Explanation

• In the SCS Curve Number method, Antecedent Moisture Condition (AMC) classifies catchment wetness (AMC-I, II, III) based on the total rainfall received in the 5 days preceding the storm event. • Final Answer: 5 days.

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