Gce Model Questions Vol1 2025 Geography Question 12
Practice objective / multiple choice question 12 from the 2025 Gce Model Questions Vol1 Geography examination.
A small catchment has a main channel length of \(1.2\) km and a slope of \(5\%\). Using the Kirpich equation \(T_c = 0.0195\,L^{0.77}\,S^{-0.385}\) (where \(L\) is in metres and \(S\) is the slope expressed as a decimal), calculate the time of concentration \(T_c\) in minutes. If a land‑use improvement reduces the time of concentration by \(15\%\), what is the adjusted \(T_c\)?
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This is Gce Model Questions Vol1 2025 Geography Question 12. It is one of the objective questions from the 2025 Gce Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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