Growth curves and temporal patterns of short duration design storms for extreme events

Abstract

There are many important dams and other structures on catchments smaller than 1000 km2 with flood response times less than 24 hours, however these catchments have been largely overlooked in previous research into large and extreme floods. This paper is an initial step in “catching up” design practice for short duration rainfall events to the current best practice available for estimation of floods from rainfall events with durations of 24 hours and greater. Three issues are specifically addressed. A regional analysis of short duration rainfall depths is conducted to extend the frequency curve beyond an AEP of 1 in 100. Rainfall frequency curves are estimated for durations between 0.5 and 12 ..