Articles | Volume 384
https://doi.org/10.5194/piahs-384-187-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/piahs-384-187-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Pre-conference publication
| 
16 Nov 2021
Pre-conference publication |
| 16 Nov 2021
| 16 Nov 2021
Heavy rainfall frequency analysis in the Benin section of the Niger and Volta Rivers basins: is the Gumbel's distribution a one-size-fits-all model?
Laboratoire d'Hydrologie Appliquée, Institut National de l'Eau,
Université d'Abomey-Calavi, Abomey-Calavi, 01 BP526 Cotonou, Benin
Ecole d'Horticulture et d'Aménagement des espaces Verts,
Université Nationale d'Agriculture, Kétou, BP43 Kétou, Benin
Audrey Adango
Laboratoire d'Hydrologie Appliquée, Institut National de l'Eau,
Université d'Abomey-Calavi, Abomey-Calavi, 01 BP526 Cotonou, Benin
Jean Hounkpè
Ecole d'Horticulture et d'Aménagement des espaces Verts,
Université Nationale d'Agriculture, Kétou, BP43 Kétou, Benin
Aymar Bossa
Laboratoire d'Hydraulique et de Maitrise de l'Eau, Institut National de l'Eau, Université d'Abomey-Calavi, Abomey-Calavi, 01 BP526 Cotonou, Benin
Yacouba Yira
Applied Science and Technology Research Institute – IRSAT/CNRST,
P.O. Box 7047, Ouagadougou, Burkina Faso
Eliezer Iboukoun Biao
Laboratoire de Géoscience, de l'Environnement et Applications (LaGEA), Université Nationale des Sciences, Technologies, Ingénierie et Mathématiques, Abomey, Benin
Julien Adounkpè
Ecole d'Horticulture et d'Aménagement des espaces Verts,
Université Nationale d'Agriculture, Kétou, BP43 Kétou, Benin
Eric Alamou
Laboratoire de Géoscience, de l'Environnement et Applications (LaGEA), Université Nationale des Sciences, Technologies, Ingénierie et Mathématiques, Abomey, Benin
Luc Ollivier C. Sintondji
Laboratoire d'Hydraulique et de Maitrise de l'Eau, Institut National de l'Eau, Université d'Abomey-Calavi, Abomey-Calavi, 01 BP526 Cotonou, Benin
Abel Akambi Afouda
Ecole d'Horticulture et d'Aménagement des espaces Verts,
Université Nationale d'Agriculture, Kétou, BP43 Kétou, Benin
Related authors
Jean Hounkpè, Djigbo F. Badou, Aymar Y. Bossa, Yacouba Yira, Julien Adounkpè, Eric A. Alamou, Emmanuel A. Lawin, Luc O. C. Sintondji, Abel A. Afouda, and Ernest Amoussou
Proc. IAHS, 384, 219–224, https://doi.org/10.5194/piahs-384-219-2021, https://doi.org/10.5194/piahs-384-219-2021, 2021
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Floods are natural disasters that widely affect people, goods, and ecosystems. Some efforts have been made in predicting floods at a short-term range. However, the usefulness of flood prediction increases as the time lead increases. This work investigated covariates useful for flood prediction several months ahead. Very good relationships were found between flood discharge and some climate indexes which could serve as a basis for seasonal flood forecasting in West Africa.
Yacouba Yira, Aymar Yaovi Bossa, Ernest Amoussou, Djigbo Félicien Badou, Jean Hounkpè, and Kpade Ozias Laurentin Hounkpatin
Proc. IAHS, 384, 275–281, https://doi.org/10.5194/piahs-384-275-2021, https://doi.org/10.5194/piahs-384-275-2021, 2021
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This study addresses the importance of integrating the effect of land use on soil infiltration rate into land use change impact modeling. Based on field measurements; soil parameterization is computed in a hydrological model using a refined soil map integrating land use change impact of soil infiltration rate and a classic soil map not considering this interaction. The results show that integrating land use related effects on soil properties renders LULC change scenarios more plausible.
Rene Bodjrenou, Luc Ollivier Sintondji, Yekambessun M’Po N’Tcha, Diane Germain, Francis Esse Azonwade, Aymar Yaovi Bossa, Silvère Fernand Sohindji, Gilbert Hounnou, Edid Amouzouvi, and Arthur Freud Segnon Kpognin
Hydrol. Earth Syst. Sci. Discuss., https://doi.org/10.5194/hess-2023-311, https://doi.org/10.5194/hess-2023-311, 2024
Preprint withdrawn
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This study assessed ERA5 reanalysis on runoff, evapotranspiration, water table depth, and soil water content over the Benin basins at spatial scale and monthly time scale. The results showed that the reanalysis simulates well the peaks of mean runoff. It showed the best performance in terms of correlation (>0.50) for runoff, SWC, and ETR. But, the correlations were below 0.5 on the reanalysis for WTD with slight overestimation.
Elias Nkiaka, Robert G. Bryant, Joshua Ntajal, and Eliézer I. Biao
Hydrol. Earth Syst. Sci., 26, 5899–5916, https://doi.org/10.5194/hess-26-5899-2022, https://doi.org/10.5194/hess-26-5899-2022, 2022
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Achieving water security in poorly gauged regions is hindered by a lack of in situ hydrometeorological data. In this study, we validated nine existing gridded water resource reanalyses and eight evapotranspiration products in eight representative gauged basins in Central–West Africa. Our results show the strengths and and weaknesses of the existing products and that these products can be used to assess water security in ungauged basins. However, it is imperative to validate these products.
Jean Hounkpè, Djigbo F. Badou, Aymar Y. Bossa, Yacouba Yira, Julien Adounkpè, Eric A. Alamou, Emmanuel A. Lawin, Luc O. C. Sintondji, Abel A. Afouda, and Ernest Amoussou
Proc. IAHS, 384, 219–224, https://doi.org/10.5194/piahs-384-219-2021, https://doi.org/10.5194/piahs-384-219-2021, 2021
Short summary
Short summary
Floods are natural disasters that widely affect people, goods, and ecosystems. Some efforts have been made in predicting floods at a short-term range. However, the usefulness of flood prediction increases as the time lead increases. This work investigated covariates useful for flood prediction several months ahead. Very good relationships were found between flood discharge and some climate indexes which could serve as a basis for seasonal flood forecasting in West Africa.
Yacouba Yira, Tariro Cynthia Mutsindikwa, Aymar Yaovi Bossa, Jean Hounkpè, and Seyni Salack
Proc. IAHS, 384, 349–354, https://doi.org/10.5194/piahs-384-349-2021, https://doi.org/10.5194/piahs-384-349-2021, 2021
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This study evaluates the impact of future climate change on the hydropower generation potential of the Bamboi catchment (Black Volta). The results indicate a projected mean annual precipitation increase while a decrease of hydropower generation is expected.
Yacouba Yira, Aymar Yaovi Bossa, Ernest Amoussou, Djigbo Félicien Badou, Jean Hounkpè, and Kpade Ozias Laurentin Hounkpatin
Proc. IAHS, 384, 275–281, https://doi.org/10.5194/piahs-384-275-2021, https://doi.org/10.5194/piahs-384-275-2021, 2021
Short summary
Short summary
This study addresses the importance of integrating the effect of land use on soil infiltration rate into land use change impact modeling. Based on field measurements; soil parameterization is computed in a hydrological model using a refined soil map integrating land use change impact of soil infiltration rate and a classic soil map not considering this interaction. The results show that integrating land use related effects on soil properties renders LULC change scenarios more plausible.
Eliézer Iboukoun Biao, Ezéchiel Obada, Eric Adéchina Alamou, Josué Esdras Zandagba, Amédée Chabi, Ernest Amoussou, Julien Adounkpe, and Abel Afouda
Proc. IAHS, 384, 57–62, https://doi.org/10.5194/piahs-384-57-2021, https://doi.org/10.5194/piahs-384-57-2021, 2021
Esdras Babadjidé Josué Zandagba, Eric Adéchina Alamou, Ezechiel Obada, Amédée Chabi, Eliézer Iboukoun Biao, and Abel Afouda
Proc. IAHS, 384, 93–98, https://doi.org/10.5194/piahs-384-93-2021, https://doi.org/10.5194/piahs-384-93-2021, 2021
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Knowing the concentration of the pollutant field distribution in time and space contributes significantly to the prediction of exceptional phenomena. To this we simulate the transport and dispersion of salt at Nokoue Lagoon. Results showed that in flood period the freshwater inflows produce a net seaward transport, while in low water period the tides lead to periodic seaward and landward transport. Freshwater inflow plays a major role in flood period and tide in low water period on the lagoon.
Houteta Djan'na Koubodana, Kossi Atchonouglo, Julien G. Adounkpe, Ernest Amoussou, Domiho Japhet Kodja, Dambré Koungbanane, Koba Yaovi Afoudji, Yao Lombo, and Kossi E. Kpemoua
Proc. IAHS, 384, 63–68, https://doi.org/10.5194/piahs-384-63-2021, https://doi.org/10.5194/piahs-384-63-2021, 2021
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This study aims to assess simulated surface runoff before and after dam construction in the Mono catchment (West Africa) using two lumped models: GR4J (Rural Engineering with 4 Daily Parameters) and IHACRES (Identification of unit Hydrographs and Component flows from Rainfall, Evapotranspiration and Stream data) over two different periods (1964–1986 and 1988–2010). Daily rainfall, mean temperature, evapotranspiration and discharge in situ data were collected for the period 1964–2010.
Amedée Chabi, Esdras Babadjidé Josué Zandagba, Ezekiel Obada, Eliezer Iboukoun Biao, Eric Adéchina Alamou, and Abel Afouda
Proc. IAHS, 384, 255–260, https://doi.org/10.5194/piahs-384-255-2021, https://doi.org/10.5194/piahs-384-255-2021, 2021
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The objective of this study is to assess the impact of climate change on water availability in Oueme catchment at Savè. Precipitation provided by 3 regional climate models was analyzed. Bias in these data was corrected using the Empirical Quantile Mapping method before being used as input to hydrological models: AWBM, ModHyPMA, HBV, GR4J, SimHyd, Hymod. The simulation with the HIRHAM5 data as inputs of models showed flows that vary at the horizons 2025, 2055, 2085 under scenarios RCP(4.5_8.5).
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Short summary
Knowledge of rainfall statistical behaviour is a prerequisite to designing rainwater drainage facilities. In West Africa, most practitioners use the Gumbel distribution regardless of rainfall statistical behaviour. This study quantifies biases induced by the use of the Gumbel distribution. It was found that the use of the Gumbel distribution instead of appropriate distributions leads to an underestimation (−45.9 %) of annual daily rainfall maxima and thus to an uncertain design of facilities.
Knowledge of rainfall statistical behaviour is a prerequisite to designing rainwater drainage...
