Neco Model Questions Vol1 2025 Geography Question 25
Practice objective / multiple choice question 25 from the 2025 Neco Model Questions Vol1 Geography examination.
In a shallow water‑logged area, the hydraulic conductivity of the soil is \(K = 0.8\) m day\(^{-1}\). Drains are to be placed at a depth \(d = 1.5\) m above an impermeable layer located at depth \(D = 4.0\) m. The permissible discharge per unit area is \(q = 0.02\) m\(^{3}\) day\(^{-1}\) m\(^{-2}\). Using the simplified Hooghoudt equation \(S = \sqrt{\dfrac{4Kd(D-d)}{q}}\), where \(S\) is the maximum spacing between parallel drains (m), calculate the greatest allowable spacing (rounded to one decimal place).
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This is Neco Model Questions Vol1 2025 Geography Question 25. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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