@article{fdi:010085267,
  title = {{T}he 21st august 2020 flood in {D}ouala ({C}ameroon) : a major urban flood investigated with 2{D} {HEC}-{RAS} modeling},
  author = {{I}roume, {J}. {Y}. {A}. and {O}nguene, {R}. and {K}offi, {F}. {D}. and {C}olmet-{D}aage, {A}. and {S}tieglitz, {T}homas and {S}one, {W}. {E}. and {B}ogning, {S}. and {O}linga, {J}. {M}. {O}. and {N}tchantcho, {R}. and {N}tonga, {J}. {C}. and {B}raun, {J}ean-{J}acques and {B}riquet, {J}. {P}. and {E}tame, {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} major flood event occurred on 21 {A}ugust 2020 in the densely populated {M}akepe {M}issoke neighborhood in the city of {D}ouala ({C}ameroon, {A}frica). {N}early 2210 buildings and 12,376 victims spread over 82 hectares were affected. {A} 2{D} {HEC}-{RAS} model is applied to simulate and characterize this event. {A} cross analysis of flood depth and flow velocity is used to classify the flood risk and identify areas exposed from low to high hazard. {T}he simulations provide detailed information on the flood characteristics (extent, depth, velocity, arrival time, and duration). {T}he simulated maximum water surface profiles are consistent with the floods marks with differences ranging from 0.02 m to 0.44 m, indicating a good agreement between the observed and simulated water levels at the peak flow ({NSE} = 0.94, {E}rel = 0.92, {RMSE} = 0.21 m). {T}he maximum inundation level is 4.48 m and the flow velocity is globally low at less than 1 m/s. {T}he average flood arrival time and duration are 5 h and 26 h, respectively, for a threshold height of 0.5 m. {T}hese results indicate a fast mobilization of the major river channel for the evacuation of this flood. {T}he level of accuracy of the developed model of the 21 {A}ugust 2020 flood event is appropriate for flood hazard assessment in the city of {D}ouala and is designed to find operational application in future events.},
  keywords = {flood hazard assessment ; {HEC}-{RAS} ; hydraulic modeling ; {T}ongo {B}assa ; watershed ; urban floods ; {CAMEROUN} ; {DOUALA}},
  booktitle = {},
  journal = {{W}ater},
  volume = {14},
  numero = {11},
  pages = {1768 [19 ]},
  year = {2022},
  DOI = {10.3390/w14111768},
  URL = {https://www.documentation.ird.fr/hor/fdi:010085267},
}