A simple hydrologic water balance for a storm relates total rainfall to the sum of surface runoff and infiltration (ignoring minor losses like evaporation/interception over the storm duration): Total Rainfall = Runoff + Infiltration. Rainfall depth is intensity multiplied by duration, and runoff depth is total runoff volume divided by the basin's drainage area.
Total rainfall depth = intensity × duration = 16 mm/hr × 5 hr = 80 mm. Runoff depth = total runoff volume / basin area...
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