Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/47164
Title: Estimation of peak discharges under different rainfall depth–duration–frequency formulations
Authors: Gioia, Andrea
Lioi, Beatrice
Totaro, Vincenzo
Molfetta, Matteo Gianluca
Apollonio, Ciro 
Bisantino, Tiziana
Iacobellis, Vito
Journal: HYDROLOGY 
Issue Date: 2021
Abstract: 
One of the main signatures of short duration storms is given by Depth–Duration–Frequency (DDF) curves. In order to provide reliable estimates for small river basins or urban catchments, generally characterized by short concentration times, in this study the performances of different DDF curves proposed in literature are described and compared, in order to provide insights on the selection of the best approach in design practice, with particular reference to short durations. With this aim, 28 monitoring stations with time series of annual maximum rainfall depth characterized by sample size greater than 20 were selected in the Northern part of the Puglia region (South-Eastern Italy). In order to test the effect of the investigated DDF curves in reproducing the design peak discharge corresponding to an observed expected rainfall event, the Soil Conservation (SCS) curve number (CN) approach is exploited, generating peak discharges according to different selected combinations of the main parameters that control the critical rainfall duration. Results confirm the good reliability of the DDF curves with three parameters to adapt on short events both in terms of rainfall depth and in terms of peak discharge and, in particular, for durations up to 30 min, the three-parameter DDF curves always perform better than the two-parameter DDF.
URI: http://hdl.handle.net/2067/47164
ISSN: 2306-5338
DOI: 10.3390/hydrology8040150
Rights: CC0 1.0 Universal
Appears in Collections:A1. Articolo in rivista

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