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Impact of the rainfall duration and temporal rainfall distribution defined using the Huff curves on the hydraulic flood modelling results
ID
Bezak, Nejc
(
Author
),
ID
Šraj, Mojca
(
Author
),
ID
Rusjan, Simon
(
Author
),
ID
Mikoš, Matjaž
(
Author
)
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MD5: CBF04EB6630CEFD1E49B048BDD6F0986
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http://www.mdpi.com/2076-3263/8/2/69
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Abstract
In the case of ungauged catchments, different procedures can be used to derive the design hydrograph and design peak discharge, which are crucial input data for the design of different hydrotechnical engineering structures, or the production of flood hazard maps. One of the possible approaches involves using a hydrological model where one can calculate the design hydrograph through the design of a rainfall event. This study investigates the impact of the design rainfall on the combined one-dimensional/two-dimensional (1D/2D) hydraulic modelling results. The Glinščica Stream catchment located in Slovenia (central Europe) is used as a case study. Ten different design rainfall events were compared for 10 and 100-year return periods, where we used Huff curves for the design rainfall event definition. The results indicate that the selection of the design rainfall event should be regarded as an important step, since the hydraulic modelling results for different scenarios differ significantly. In the presented experimental case study, the maximum flooded area extent was twice as large as the minimum one, and the maximum water velocity over flooded areas was more than 10 times larger than the minimum one. This can lead to the production of very different flood hazard maps, and consequently planning very different flood protection schemes.
Language:
English
Keywords:
design storm
,
hydraulic modelling
,
flood hazards
,
Glinščica catchment
,
hydrological modelling
,
Huff curves
,
HEC-RAS
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FGG - Faculty of Civil and Geodetic Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2018
Number of pages:
15 str.
Numbering:
Vol. 8, iss. 2, art. 69
PID:
20.500.12556/RUL-131866
UDC:
556.12(045)
ISSN on article:
2076-3263
DOI:
10.3390/geosciences8020069
COBISS.SI-ID:
8314209
Publication date in RUL:
05.10.2021
Views:
788
Downloads:
172
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Record is a part of a journal
Title:
Geosciences
Shortened title:
Geosciences
Publisher:
MDPI
ISSN:
2076-3263
COBISS.SI-ID:
519967769
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
11.02.2018
Secondary language
Language:
Slovenian
Keywords:
projektni padavinski dogodek
,
hidravlično modeliranje
,
poplavna ogroženost
,
porečje Glinščice
,
hidrološko modeliranje
,
Huffove krivulje
,
HEC-RAS
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
J2-7322
Name:
Modeliranje hidrološkega odziva nehomogenih povodij
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0180
Name:
Vodarstvo in geotehnika: orodja in metode za analize in simulacije procesov ter razvoj tehnologij
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