The 'Horton''s infiltration equation' f(t) = fc + (f0 − fc)e^(−kt) describes:
Choose the correct answer
Evapotranspiration from lakes
Time-varying infiltration rate decaying from initial high rate (f0) to final steady rate (fc) exponentially
Seepage from canal banks
Surface runoff generation rate
Correct Answer
B. Time-varying infiltration rate decaying from initial high rate (f0) to final steady rate (fc) exponentially
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
Horton (1940): f(t) = fc + (f0 − fc)e^(−kt) where f0 = initial infiltration rate, fc = final (ultimate) steady-state rate, k = decay constant, t = time. Initially high infiltration (soil dry), decreases exponentially to fc (field capacity / soil pores filled). Used to compute actual infiltration from rainfall data. Phi-index is simpler alternative for storms.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Practice more Civil Engineering questions
This MCQ belongs to JE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.