An investigation is made to (a) Develop a method of depth-duration-frequency analysis for precipitation events having short return period (high frequency) for urban storm water runoff management and control purposes; (b) develop a new high accuracy urban stormwater runoff determination method which when verified, can be used for projects requiring high accuracy detailed runoff results and can also be used as the calibration scale for the less accurate urban runoff prediction methods; and (c) compare and evaluate selected urban stormwater runoff prediction methods. The eight methods evaluated are the rational method, unit hydrograph method, Chicago hydrograph method, British Transport and Road Research Laboratory method, University of Cincinnati Urban Runoff method, Dorsch Hydrograph Volume method, EPA Storm Water Management Model, and Illinois Urban Storm Runoff method. The comparison and evaluation is done by using four recorded hyetographs of the Oakdale Avenue Drainage Basin in Chicago to produce the predicted hydrographs by the methods and the results are compared with recorded hydrographs. The relative merits of the methods are discussed and recommendations are made.

"Contract no. 68-03-0302." Report prepared by Department of Civil Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois. Includes bibliographical references (pages 130-135).