Determine the peak discharge resulting from a 2-hour rainfall with a constant intensity equal to 2. 5 × 10⁻⁵ mm/s that happens on an impervious rectangular basin with the following characteristics: L = 200 m, S = 0. 005, and n = 0. 04. The infiltration parameters are

Φ = 0. 5, K = 3 × 10⁻⁶ m/s, and P_f = 0. 25 m. At the beginning of the rainfall, the basin soil is 0. 50% saturated.