Neco Model Questions Vol1 2020 Geography Question 8

Practice essay / theory question 8 from the 2020 Neco Model Questions Vol1 Geography examination. This question covers Drainage, Hydrology, Human Impact on Rivers .

Neco Model Questions Vol1 2020 Geography Essay / Theory
Topics: Drainage Hydrology Human Impact on Rivers
Question 8 NECO_MODEL_QUESTIONS_VOL1 • 2020 • GEOGRAPHY • essay

The Benue River basin in central Nigeria experiences a marked rainy season (June–September) with average monthly rainfall of 250 mm and a dry season with negligible rain. Recent land‑use change has seen extensive clearing of forest on the upper catchment for agriculture. Answer the following:

Question Parts

( a )
Using the given rainfall data, estimate the average annual runoff depth (in mm) from the basin if the runoff coefficient for the forested area is 0.30 and for the cleared agricultural area is 0.55. Assume the basin area is 30 % forested and 70 % cleared.
( b )
Discuss how the conversion of forest to agriculture has altered the river’s discharge regime, particularly focusing on peak flow magnitude and timing during the rainy season.
( c )
Propose two integrated watershed management strategies that could mitigate the adverse effects of increased runoff on downstream communities.

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About This Question

This is Neco Model Questions Vol1 2020 Geography Question 8. It is one of the essay questions from the 2020 Neco Model Questions Vol1 Geography examination.

The question covers Drainage, Hydrology, Human Impact on Rivers .

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