Assessing the Uncertainty Associated with Flood Features due to Variability of Rainfall and Hydrological Parameters
Joint Authors
Al-Ansari, Nadhir
Sharafati, Ahmad
Khazaei, Mohammad Reza
Nashwan, Mohamed Salem
Yaseen, Zaher Mundher
Shahid, Shamsuddin
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-08-25
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
An assessment of uncertainty in flood hydrograph features, e.g., peak discharge and flood volume due to variability in the rainfall-runoff model (HEC-HMS) parameters and rainfall characteristics, e.g., depth and duration, is conducted.
Flood hydrographs are generated using a rain pattern generator (RPG) and HEC-HMS models through Monte Carlo simulation considering uncertainty in stochastic variables.
The uncertainties in HEC-HMS parameters (e.g., loss, base flow, and unit hydrograph) are estimated using their probability distribution functions.
The flood events are obtained by simulating runoff for rainfall events using the generated model parameters.
The uncertainties due to rainfall and model parameters on generated flood hydrographs are evaluated using the relative coefficient of variation (RCV).
The results reveal a higher RCV index for flood volume (RCV = 153) than peak discharge (RCV = 116) for a 12-hr rainfall duration.
The average relative RCV (ARRCV) index computed for hydrological component (e.g., base flow, loss, or unit hydrograph) indicates the highest impact of rainfall depth on flood volume and peak.
The results indicate that rainfall depth is the main source of uncertainty of flood peak and volume.
American Psychological Association (APA)
Sharafati, Ahmad& Khazaei, Mohammad Reza& Nashwan, Mohamed Salem& Al-Ansari, Nadhir& Yaseen, Zaher Mundher& Shahid, Shamsuddin. 2020. Assessing the Uncertainty Associated with Flood Features due to Variability of Rainfall and Hydrological Parameters. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1122814
Modern Language Association (MLA)
Sharafati, Ahmad…[et al.]. Assessing the Uncertainty Associated with Flood Features due to Variability of Rainfall and Hydrological Parameters. Advances in Civil Engineering No. 2020 (2020), pp.1-9.
https://search.emarefa.net/detail/BIM-1122814
American Medical Association (AMA)
Sharafati, Ahmad& Khazaei, Mohammad Reza& Nashwan, Mohamed Salem& Al-Ansari, Nadhir& Yaseen, Zaher Mundher& Shahid, Shamsuddin. Assessing the Uncertainty Associated with Flood Features due to Variability of Rainfall and Hydrological Parameters. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-9.
https://search.emarefa.net/detail/BIM-1122814
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122814