Desarrollo de la Curva de Riesgo por Inundación de la Cuenca del Río Magdalena en el Tramo Puerto Salgar – La Dorada

Abstract

One of the main problems presented by the Magdalena River basin is the population growth on the banks and slopes of the river, which over the centuries has altered the environment with extractive and productive activities, affecting much of natural resources like the ground; generating problems of erosion and sediment transport. With this problem the municipalities of Puerto Salgar and La Dorada are in constant threat against floods caused by various climatic elements such as the bimodal rainfall patterns that occur throughout the year, wet, winds and periods of La Niña phenomenon that increases the intensity of this natural event. Therefore, this project seeks to construct a flood risk curve for the urban areas of Puerto Salgar la Dorada with the purpose of evaluating the economic risk of this event in urban areas, through geographic information systems using ArcGIS, data of the hydrological and meteorological stations of the area; that help define boundary conditions for the hydraulic model in the study section using Hec-ras and Hec-georas software in different return periods of 2, 25 and 100 years generating the flood zones. The risk curve represents the economic risk for these municipalities if present this event, which was done through Excel and the socioeconomic data of the study area. The results obtained are that from a period of 25 years the physical structures of the two municipalities will be affected, generating economic losses to the municipalities of Puerto Salgar - La Dorada. With the results obtained in this project, they are a fundamental tool to improve the risk management plan for these municipalities.