Análisis y evaluación del riesgo por inundación en la Planta de Tratamiento de Agua Residual (PTAR) del municipio de La Plata Huila

Abstract

The objective of this article was based on the application of a probabilistic model to analyze the vulnerability of flood risk for the wastewater treatment plant PTAR of the municipality of La Plata Huila. It was decided to use quantitative research. As a result, for the analysis sections, the velocity range for the return period of 2.33 years is 1 m/s and 1.20 m/s, for 25 years it is 2.3 m/s and 3.1 m/s, and finally for 100 years it corresponds to 1.5 m/s and 4.5 m/s. In this way, it is possible to visualize that by generating sectorized flood zones along the section, the velocity distribution develops along the entire cross section, not only in the channel section, thus making it possible to identify at which point of the hydrograph the velocity will be reduced and how long it will take for the affected areas to achieve their return. In conclusion, through the hydrometeorological analyses, it was determined that the urban drought characterization, under the implementation of the Soil Conservation Service (SCS) model, corresponds to a Curve Number of 59, which refers to a zone of moderate Type 76 to 38 mm/h. Additionally, based on these results and through the application of the SCS model, the peak flow for the study area with respect to the 100-year return period corresponds to 688.15 m³/s.