Neco 2024 Geography Question 47
Practice objective / multiple choice question 47 from the 2024 Neco Geography examination.
The average annual rainfall over a river basin is 1200 mm and the runoff coefficient is 0.45. The measured average discharge at the basin outlet is \(45\,\mathrm{m}^{3}\!\!/\!\mathrm{s}\). Assuming the rainfall is uniformly distributed over the basin, determine the basin area in km\(^2\) (rounded to one decimal). Then, a new irrigation scheme requires an additional water volume of 2.5 million m\(^3\) per year. Assuming the same rainfall and runoff coefficient, calculate the minimum additional catchment area (in km\(^2\), rounded to one decimal) that must be incorporated to meet this demand.
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About This Question
This is Neco 2024 Geography Question 47. It is one of the objective questions from the 2024 Neco Geography examination.
Difficulty level: Medium .
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