Question

Assume that the time evolution of the infiltration capacity for a given soil is governed by Hortons 2. equation. For this soil, the asymptotic or final equilibrium infiltration capacity isfe = 0.75 cm/hr, the initial infiltration capacity is fo 5 cm/hr, and the rate of decay of infiltration capacity parameter is k- 4 hr. For the precipitation hyetograph tabulated below, carry out a complete infiltration analysis, including evaluation of the temporal evolution of the actual infiltration rate, actual cumulative infiltration volume, actual infiltration capacity, and rate of production of precipitation excess, a+ v. Precipitation Time min 0-10 10- 20 20-30 30-40 1.5 6.0 8.0 5.0 Time min 40-50 50-60 60 70 Precipitation cm/h 4.0 3.0 0.8

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SolanHion en Dato (Mfn) | (i)tu.fhィ 0-10 o-20 60 20-30 | 30-4S.0 Capaci ty 2.93 , 83 32 1. Cfct) 〈cnd kr) (fa)--一一一 | 82 3 09016 0.9016 o 22S 0. 8298 50-60 긔 60-0b.8 0.92980 3.D 3 01 10 20 3. ho So 6。70 go 90 Tme (min) Unde. Hortons Cuade-Jnfuhaho» cabove Hostoms Cuvo -Runo OY M- noff occused P

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