Reconstrucción de la magnitud de la crecida del 4 de junio de 2023 en Esmeraldas.

Abstract

The present research, it focuses on the reconstruction of the hydrological flood in the Esmeraldas River basin on June 4-2023, using. The HEC-HMS hydrological modelling platform. To carry out the reconstruction of said flood, three previous floods were used: the first one for calibration and the remaining two for validation. Since there are no observed flows for the day 4 of June 2023. For the storm analysis and filling of meteorological data, codes were written in the programming language R. The precipitation values occurred during the morning of June 4, 2023, were captured by the IMERG V7 product. Subsequently, the use of statistical tools such as correlation between precipitation time series at the stations and linear regression between observed in situ and satellite data was employed. To perform data filling in the time interval from April 24, 2023 to December 31, 2023. For the model, time series of precipitation and observed flows were used. The S.C.S. method was applied to calculate infiltration, the Giandotti equation to obtain the concentration time in the basin, in order to use the Clark unit hydrograph tool. The routing was calculated using Muskingum method. Finally, the base flow was taken from previous year using the INAMHI yearbooks. All these processes were used in the generation of different hydrograph and in the analysis of peak the flows that probably occurred at 6:00 with a simulated magnitude of 4926.1 m³/s.