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Manuscript
amel Boumessenegh
University of Mustapha Ben Boulaid Batna 2: Universite Batna 2
Corresponding Author
ORCiD: https://orcid.org/0000-0001-6885-1643
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This work is licensed under a CC BY 4.0 License. Read Full License
The peak flow of a flood can be determined by several empirical methods. Among these methods, the Gradex method is used in this work to estimate the project flood and the volumes corresponding to the flows. This approach has made it possible to recognize the flow of different frequencies by aspects of the peak flow and the flood hydrograph. The study was based on the maximum annual daily rainfall for a long series of observations (47 years), and on the intensity-duration-frequency (IDF) curves of the four rainfall stations Biskra, T'kout, Djemoura, and El kantara; located in the watershed of Oued Biskra.
The application of the Gradex method has allowed to approach the maximum flow of floods at the level of the outlet which is located at the entrance of the city of Biskra; for the rare frequency of occurrence (return periods ranging from 10 to 1000 years).
Keywords
Return periods, flood flows, peak flows, gradex method, flood volume, flood hydrograph
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A new preprint design is coming!
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This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Manuscript
amel Boumessenegh
University of Mustapha Ben Boulaid Batna 2: Universite Batna 2
Corresponding Author
ORCiD: https://orcid.org/0000-0001-6885-1643
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 10 Feb, 2021
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
License:
This work is licensed under a CC BY 4.0 License. Read Full License
The peak flow of a flood can be determined by several empirical methods. Among these methods, the Gradex method is used in this work to estimate the project flood and the volumes corresponding to the flows. This approach has made it possible to recognize the flow of different frequencies by aspects of the peak flow and the flood hydrograph. The study was based on the maximum annual daily rainfall for a long series of observations (47 years), and on the intensity-duration-frequency (IDF) curves of the four rainfall stations Biskra, T'kout, Djemoura, and El kantara; located in the watershed of Oued Biskra.
The application of the Gradex method has allowed to approach the maximum flow of floods at the level of the outlet which is located at the entrance of the city of Biskra; for the rare frequency of occurrence (return periods ranging from 10 to 1000 years).
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
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