Presented in this paper is a detailed study of rainfall runoff relationships in urban areas based on a “Design Storm” of three hours duration. The “Chicago Hydrograph Method” of sewer design evaluates, in detail, the rainfall abstractions and flow detentions which intervene between the hyetograph of rainfall and the hydrographs of sewer supply and sewer outflow. Several types of uniform land use with various values of ground slope and depression pondage have been studied.
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Tholin et al. (1960) studied this question.