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Synthetic design hydrographs based on distribution functions with finite support

Lookup NU author(s): Dr Francesco Serinaldi

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Abstract

The primary characteristics that influence the potential of defining a synthetic design hydrograph (SDH), are the hydrograph shape, peak discharge (Qp), volume (V), and duration (D). This paper studies the advantages and shortcomings of using simple distribution functions with finite support (namely, beta and generalized standard two-sided power distributions) to represent and synthesize direct runoff hydrographs. The relationships among Qp, V, D, and distribution parameters are explored on a few flood events selected by a recursive digital filter algorithm and an overthreshold approach. The results obtained indicate that the adopted procedure provides a good compromise between simplicity and accuracy for building SDHs with two assigned flood characteristics (e.g., Qp and V) and a defined shape.

Publication metadata

Author(s): Serinaldi F; Grimaldi S

Publication type: Article

Publication status: Published

Journal: Journal of Hydrologic Engineering

Year: 2011

Volume: 16

Issue: 5

Pages: 434-446

Print publication date: 12/10/2010

ISSN (print): 1084-0699

ISSN (electronic): 1943-5584

Publisher: American Society of Civil Engineers

URL: http://dx.doi.org/10.1061/(ASCE)HE.1943-5584.0000339

DOI: 10.1061/(ASCE)HE.1943-5584.0000339

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