Evaluación de la precipitación y cambio de uso de suelo como factores desencadenantes de inundación: Caso de estudio la Ciudad de Riobamba

Abstract

Abstract: The urbanization process and the changes in land use that are taking place in the urban basin of the city of Riobamba and in the surrounding areas, modifies and transforms the existing natural physical the process of urbanization and changes in land use in the urban basin of the city of Riobamba and the surrounding areas modifies and transforms the existing physical and natural elements, creating new hazards. Due to high rainfall, this has caused multiple problems such as flooding. The present work aims to evaluate precipitation and land use change as factors that produce flooding events. Remote sensing was used to map the change in land use in different decades; for the rainfall-runoff model applying the curve number method and unit hydrographs (SCS), flood hydrographs were evaluated for different return periods. The comparison results of CVUS show the highest land use change in the period 2016-2020 with the increase of Agricultural Mosaics. The result of the study provides a general idea about the peak outflows under land use conditions.