Neco Model Questions Vol1 2025 Geography Question 5
Practice objective / multiple choice question 5 from the 2025 Neco Model Questions Vol1 Geography examination.
A catchment area of 2.5 km\(^2\) consists of 40 % residential land (runoff coefficient \(C_r = 0.55\)), 30 % commercial land (\(C_c = 0.70\)), and 30 % open land (\(C_o = 0.30\)). For a design storm of 30 minutes, the rainfall intensity is 80 mm h\(^{-1}\). Using the Rational Method \(Q = 0.00278\,C\,I\,A\) (where \(Q\) is in m\(^3\) s\(^{-1}\), \(C\) is the composite runoff coefficient, \(I\) the intensity in mm h\(^{-1}\), and \(A\) the area in hectares), determine whether an existing culvert with a capacity of 0.25 m\(^3\) s\(^{-1}\) is adequate. Answer "Yes" if adequate, otherwise "No".
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About This Question
This is Neco Model Questions Vol1 2025 Geography Question 5. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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