Waec Model Questions Vol1 2023 Geography Question 2

Practice objective / multiple choice question 2 from the 2023 Waec Model Questions Vol1 Geography examination.

Waec Model Questions Vol1 2023 Geography Objective / Multiple Choice Hard Difficulty
Question 2 WAEC_MODEL_QUESTIONS_VOL1 • 2023 • GEOGRAPHY • objective

A catchment area of 250 km² receives a uniform storm that delivers 120 mm of rain over 6 hours. The runoff coefficient for the basin is 0.6. The downstream river channel can convey a maximum discharge of 1500 m³ s⁻¹. Assuming the runoff hydrograph is triangular with a time to peak equal to the storm duration (6 h) and a total duration (base width) of twice the time to peak, determine whether the peak discharge exceeds the river's capacity. Show all calculations.

Answer Options

A. Yes, the peak discharge is approximately 900 m³ s⁻¹, which exceeds the river capacity of 1500 m³ s⁻¹.
B. No, the peak discharge is approximately 1200 m³ s⁻¹, which is below the river capacity of 1500 m³ s⁻¹.
C. Yes, the peak discharge is approximately 1800 m³ s⁻¹, which exceeds the river capacity of 1500 m³ s⁻¹.
Correct Answer D. No, the peak discharge is approximately 833 m³ s⁻¹, which is below the river capacity of 1500 m³ s⁻¹.
Correct Answer
D
Correct Option:
No, the peak discharge is approximately 833 m³ s⁻¹, which is below the river capacity of 1500 m³ s⁻¹.

About This Question

This is Waec Model Questions Vol1 2023 Geography Question 2. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Geography examination.

Difficulty level: Hard .

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