Validation des modèles hydrologiques GR2M et GR4J sur le bassin versant de l’oued Lakhdar (Tafna, Nord-Ouest algérien)

Gherissi, Radia; Baba-Hamed, Kamila; Bouanani, Abderrazak

doi:10.1051/tsm/201705087

Cited by 5 publications

(2 citation statements)

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“…The objective of the modeling consists of an optimization of the parameters characterizing the model through the improvement of adjustment criteria in order to achieve a robust and reliable rainfall-runoff simulation. At the end of this study, the results obtained were satisfactory and go in the same direction as those already found for neighboring basins of the Tafna or the Macta (Bouanani et al 2011;Djellouli et al 2015;Gherissi et al 2017;Zennaki et al 2020). The results can be used as a decision support and as a prevention tool against natural disasters.…”

Section: Introductionsupporting

confidence: 82%

Rainfall-flow Modeling Using a Global Conceptual Model: Case of the Beni Bahdel Watershed (Northwest of Algeria)

Bouguerra¹,

Mansour²

2023

JWMM

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Rainfall-flow modeling remains necessary, even essential, to understand the dynamics of a watershed and to solve problems related to the disruption of hydrological regimes. It has been proven effective by providing solutions to many water-related problems, such as sizing and management of structures, and flood forecasting. Global hydrological models can simulate the transformation of rainfall data into flows on natural basins for many practical applications in the field of water resource management. Our study aims to evaluate the reliability of one of these models, that of Rural Engineering 'GR' at three time steps: annual (GR1A), monthly (GR2M), and daily (GR4J), which will be applied to the Beni Bahdel watershed with an area of 1040 km², one of the sub-basins of Northwestern Algeria. The input parameters are precipitation and potential evapotranspiration (PET), and the output parameters are flows. The results obtained, both in calibration and validations, are encouraging, where the evaluation criteria taken into consideration, namely the Nash criterion and the correlation coefficient, exceeded 70% and 0.80 respectively. The study could be a decision-making tool for the simulation of flows, and be very useful for future hydraulic developments in the study area.

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