Gce Model Questions Vol1 2019 Geography Question 8

Practice essay / theory question 8 from the 2019 Gce Model Questions Vol1 Geography examination. This question covers Drainage .

Gce Model Questions Vol1 2019 Geography Essay / Theory

Topic: Drainage

Question 8 GCE_MODEL_QUESTIONS_VOL1 • 2019 • GEOGRAPHY • essay

A river basin in the Sahel region covers an area of 12,000 km². The mean annual rainfall is 400 mm, of which 30 % infiltrates, 20 % is lost to evapotranspiration and the remainder contributes to runoff. The main river channel is 150 km long, the average basin slope is 0.004 and the drainage density is 1.2 km km⁻².

Question Parts

( a )

Calculate the total annual runoff volume generated from the basin (in cubic metres).

( b )

Assuming the runoff is evenly distributed throughout the year, estimate the average discharge of the river in cubic metres per second (m³ s⁻¹).

( c )

Discuss how the basin’s climate, slope and drainage density influence the river regime, and evaluate two flood‑mitigation measures that would be appropriate for this semi‑arid basin.

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About This Question

This is Gce Model Questions Vol1 2019 Geography Question 8. It is one of the essay questions from the 2019 Gce Model Questions Vol1 Geography examination.

The question covers Drainage .

View More Gce Model Questions Vol1 2019 Geography Questions More Gce Model Questions Vol1 Practice Questions Back to Questions

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