A research is conducted to investigate the applicability of commonly used urban storm runoff prediction models to drainage basins with steep slopes. The hydraulics of runoff on steep slope areas is first reviewed and its difference from that for mild slope areas is discussed. Next the difficulties in applying commonly used methods to steep slope basins are presented. It appears that most engineers are not aware of the problems associated with runoff from steep slope areas and they do not realize that the numerical results given by the conventionally used methods, if obtainable, may not be reliable. A simple approximate method specifically for steep slope basins is proposed and an example is provided. The example utilizes the data from the Baker Street Drainage Basin in San Francisco.

"August 1977." "Prepared by Dept. of Civil Engineering, University of Illinois at Urbana-Champaign, under the Contract No. 68-03-0302." Includes bibliographical references (pages 82-85).