Q1 on the Topic of Infiltration (a) The Hortonâs initial infiltration capacity for a catchment is204 mm/h and the constant infiltration value at saturation is 60mm/h. For a rainfall in excess of 204 mm/h maintained at this ratefor 50 minutes, the infiltrated volume was observed to be 50.6 mm.Determine the value of k in Hortonâs equation. (b) Soil infiltration characteristics (based on Hortonâs equation)and an observed 4-hr duration rainfall values for a 100 ha parklandcatchment are given below:
i. Calculate the total depth of infiltration ii. What is the total volume of runoff in m3 for the observedrainfall iii. Estimate index of the catchment
Q1 on the Topic of Infiltration (a) The Horton?s initial infiltration capacity for a catchment is 204 mm/h and the constant infiltration value at saturation is 60 mm/h. For a rainfall in excess of 204 mm/h maintained at this rate for 50 minutes, the infiltrated volume was observed to be 50.6 mm. Determine the value of k in Horton?s equation. (b) Soil infiltration characteristics (based on Horton?s equation) and an observed 4-hr duration rainfall values for a 100 ha parkland catchment are given below: i. Calculate the total depth of infiltration ii. What is the total volume of runoff in m3 for the observed rainfall iii. Estimate index of the catchment
