Modelo hidrológico e hidráulico (1d) para evaluar el sistema de drenaje urbano en la avenida Guaimaral entre calle 9 Norte y 20 Norte de la ciudad de San José de Cúcuta, Norte de Santander.

Abstract

The present research project implemented a one-dimensional (1D) hydrological and hydraulic model to evaluate the current urban drainage system of the sub-basin under study, delimited by Guaimaral Avenue between 9th North Street and 20th North Street, in the city of San José de Cúcuta, Norte de Santander. The Storm Water Management Model (SWMM) was used as a hydrological and hydraulic calculation tool, allowing for the processing of necessary information and obtaining the spatiotemporal behavior of surface runoff. Primary and secondary information was collected on the urban infrastructure and geomorphological parameters of the sub-basin (area, perimeter, main width, and length). Additionally, precipitation hyetographs were constructed using existing pluviometric data from IDEAM stations to obtain the design rainfall for different return periods (3, 5, 10, 50, and 100 years). The resulting model identified 132 sub-basins, including completely green areas, impervious zones due to residential rooftops, and a combination of both. It recorded 77 collection wells and one discharge point located in the Bogotá canal. The modeling showed an error of less than 1%, indicating high continuity of flow and runoff. The drainage system was finally modeled and calibrated. The modeling was carried out with the help of the software to estimate its behavior during precipitation events. The calibration was performed using observed data from the research thesis "Quantification of Pedestrian Hazard due to Rainfall-Induced Flooding in Urban Basins Using Python Programming Language and the 14 Storm Water Management Model (SWMM)," where velocity maps and flood maps were obtained for each of the aforementioned return periods.