Three urban runoff models were compared with data on two urban watersheds, Oakdale in Chicago, Illinois (5.42 ha of residential area, 45.8% impervious) and Calvin Park in Kingston, Ontario (36.2 ha of residential area, 27% impervious). The runoff models were the Road Research Laboratory Model, the University of Cincinnati Urban Runoff Model, and the EPA Storm Water Management Model. Using the hydrograph peak and its time for evolution showed that no one model was uniformly better than another. -from Selected Water Resources Abstracts
