Question: The 1 0 - year IDF curve for a catchment area is given by: i = 6 0 0 0 ( t d + 2

The 10-year IDF curve for a catchment area is given by:
i=6000(td+20)1
where i and td represent the average intensity [mmhr.] and storm duration [min.], respectively.
If the soil can be characterized by an infiltration capacity of 25mmhr., estimate the maximum
10-year runoff.
The 1 0 - year IDF curve for a catchment area is

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