Question Bank • QB_SUB_SWCE_0149 MSQ • 2 Marks

Section 4: Soil and Water Conservation Engineering

Hydrology

Subtopic: Runoff estimation

Question Statement:

Which fundamental assumptions underpin Sherman's Unit Hydrograph theory?

Options:

  • (A) Effective rainfall is uniformly distributed over the entire catchment area
  • (B) Effective rainfall intensity is uniform during the specified unit duration $D$
  • (C) The ordinates of the direct runoff hydrograph are directly proportional to the total depth of runoff (linear response)
  • (D) Catchment characteristics change dynamically with each rainfall storm

Answer Key:

A, B, C

Step-by-Step Solution & Explanation

Unit hydrograph relies on time invariance and linear response with uniform areal and temporal rainfall distribution.
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