@article{fdi:010092495,
  title = {{U}se of the {HEC} {RAS} model for the analysis of exceptional floods in the {O}u{\'e}m{\'e} basin},
  author = {{A}moussou, {E}. and {A}moussou, {F}.{T}. and {B}ossa, {A}.{Y}. and {K}odja, {D}.{J}. and {T}otin {V}odounon, {H}.{S}. and {H}ound{\'e}nou, {C}. and {B}orrell {E}stupina, {V}. and {P}aturel, {J}ean-{E}mmanuel and {M}ah{\'e}, {G}il and {C}udennec, {C}. and {B}oko, {M}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}he {O}u{\'e}m{\'e} {R}iver basin extends over almost half of {B}enin's territory, entirely located in a humid tropical climate. {T}his river system includes a deltaic zone (delta of the {O}u{\'e}m{\'e}) known for its high agricultural


potential and thus subject to a socio-economic development agenda. {T}he {O}u{\'e}m{\'e} delta is facing recurrent floods that maintain rural agricultural population into a retrograding crisis with significant damages such as losses of


properties. {T}he objective of this study is to improve decision-making in the {O}u{\'e}m{\'e} basin through the simulation of exceptional floods using the {HEC}-{RAS} model. {T}he {HEC} {RAS} model is a conceptual model, which works through


mathematical and physical formulas to implement environmental phenomena for forecasting, understanding and analysis purposes. {T}he model inputs used are basin {GIS} data, hydro-meteorological data, characteristics of existing hydraulic structures, etc. {T}he targeted outputs include 1{D}/2{D}/3{D} view plans with support of satellite images, tables, graphs and curves. {I}t is worth mentioning that the model provides outputs compatible with other tools, such as civil engineering ({C}ivil


3{D}, {R}evit, {I}nfraworks, etc.) and {GIS}, that help to expand the valorization fields. {T}he implementation of the model in the {O}u{\'e}m{\'e} basin has made it possible to note: (i) that the recurring effect of losses and damages is justified by the settlement of the population on the river banks; (ii) that there is an important agricultural production in areas of high flood risk; (iii) that depending on the occurrence of the phenomenon, the flooded extent and the height of submersion remains variable, and more important for extreme flooding; (iv) about 12.07 % occurrence of river flood against 13.24 % for flash flood at a return period of 30 years. {M}oreover, it is very relevant to note that most of flood waters converge to the western part of the basin


(an area with a low risk of flooding, stretched over 63.68 km2) and to the eastern part around the {D}am{\`e}-{W}ogon depression (an area at high risk of flooding, stretched over 10.49 km2).},
  keywords = {{BENIN} ; {ZONE} {TROPICALE} ; {OUEME} {FLEUVE}},
  booktitle = {},
  journal = {{P}roceedings of {IAHS}},
  volume = {385},
  numero = {},
  pages = {141--146},
  ISSN = {2199-899{X}},
  year = {2024},
  DOI = {10.5194/piahs-385-141-2024},
  URL = {https://www.documentation.ird.fr/hor/fdi:010092495},
}