A 0.45 km2 watershed has a composite runoff coefficient of 0.33. The overland flow distance to the beginning of a stream that drains the watershed is 200 m, and the ground slope is 5 %. The stream is 700 m long, with a drop in channel elevation of 50 m. Estimate the peak rate of runoff for the 100-year storm considering the overland flow time and the channel flow time.