REGIONALIZED PARTIAL-DURATION BALANCED-HYDROGRAPH MODEL

For design problems where annual-event analyses are inappropriate, suc h as in the case of channel scour due to floods above a threshold, mul tiple-event analyses with partial duration series should be used. A pr ocedure for calibrating a partial-duration, balanced-hydrograph model for regional design work is presented. The model can be used either as a series of synthetic storm events or as part of a simulation model. Data from Los Angeles were analyzed to develop a model for ungaged urb an watersheds in southern California.