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Flooding of the Saguenay region in 1996. Part 1: Modeling River Ha! Ha! flooding

Eman AlQasimi and Tew-Fik Mahdi

Article (2019)

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Cite this document: AlQasimi, E. & Mahdi, T.-F. (2019). Flooding of the Saguenay region in 1996. Part 1: Modeling River Ha! Ha! flooding. Natural Hazards, 96(1). doi:10.1007/s11069-018-3443-4
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Abstract

This paper presents an application of the model UMHYSER-1D (Unsteady Model for the HYdraulics of SEdiments in Rivers One-Dimensional) for the representation of morphological changes along the Ha! Ha! River during the 1996 flooding of the Saguenay region. UMHYSER-1D is a one-dimensional hydromorphodynamic model capable of representing water surface profiles in a single-river or a multiriver network, with different flow regimes considering cohesive or non-cohesive sediment transport. This model uses fractional sediment transport, bed sorting, and armoring along with three minimization theories to achieve riverbed and width adjustments. UMHYSER-1D is applied to the Ha! Ha! River (Quebec, Canada), a tributary of the Saguenay River, for the 1996 downpour. The results permit forcing data verification and prove that some cross sections are not the right ones. UMHYSER-1D captures the trends of erosion and deposition well although the results do not fully agree with the collected data. This application shows the capabilities of this model and predicts its promising role in solving complex, real engineering cases.

Uncontrolled Keywords

Saguenay flood 1996; One-dimensional model UMHYSER-1D; Data validation; Ha! Ha! River

Open Access document in PolyPublie
Subjects: 1000 Génie civil > 1006 Génie hydrologique
2200 Mécanique des fluides > 2203 Modélisation et simulation
4500 Hydrologie > 4500 Hydrologie
Department: Département des génies civil, géologique et des mines
Research Center: Non applicable
Funders: CRSNG/NSERC
Grant number: RGPIN-2016-06413
Date Deposited: 13 Jul 2020 18:16
Last Modified: 14 Jul 2020 01:20
PolyPublie URL: https://publications.polymtl.ca/5311/
Document issued by the official publisher
Journal Title: Natural Hazards (vol. 96, no. 1)
Publisher: Springer
Official URL: https://doi.org/10.1007/s11069-018-3443-4

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