Question Bank • QB_SWCE_ADV_129 MCQ • 2 Marks

Section 4: Soil and Water Conservation Engineering

Hydrology

Subtopic: Drought and its classification

Question Statement:

In regional drought analysis, what is the canonical chronological sequence in which drought propagation typically manifests across a watershed?

Options:

  • (A) Meteorological drought $\rightarrow$ Hydrological drought $\rightarrow$ Agricultural drought $\rightarrow$ Socio-economic drought
  • (B) Hydrological drought $\rightarrow$ Meteorological drought $\rightarrow$ Agricultural drought $\rightarrow$ Socio-economic drought
  • (C) Agricultural drought $\rightarrow$ Meteorological drought $\rightarrow$ Socio-economic drought $\rightarrow$ Hydrological drought
  • (D) Socio-economic drought $\rightarrow$ Agricultural drought $\rightarrow$ Hydrological drought $\rightarrow$ Meteorological drought

Answer Key:

A

Step-by-Step Solution & Explanation

Drought initiates with prolonged precipitation deficit (Meteorological drought). This leads to declining streamflows, drying reservoir storage, and falling groundwater tables (Hydrological drought). The persistent soil moisture deficit impairs crop root growth and slashes biomass yields (Agricultural drought), which ultimately triggers food shortages and economic distress (Socio-economic drought). Option A is the correct chronological propagation sequence.
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