Gestión Integrada de recursos hídricos. Caso de estudio: manejo, gestión y mitigaciones de la cuenca Ortega Bajo para el estudio de socavacion local de los estribos, el fondo del cauce y medidas de protección de un puente.

Abstract

Abstract:This study modeled the hydraulic behavior of the Ortega Alto stream in the province of Zamora Chinchipe, Yacuambi canton, Tutupali parish, with the purpose of designing a vehicular bridge. Through morphometric analysis, data from INAMHI and hydrological models such as HEC-HMS and HEC-RAS, it is estimated that the sub-basin, which covers an area of 2.42 km², has high runoff (CN = 72.44), in addition to a short concentration time of 19.75 min and a steep average slope of the main channel of 16.22%, which increases the risk of flash flooding. Peak flows for a 50-year return period ranged between 2.30 and 27.41 m³/s, with 5.58 m³/s selected from the SCS hydrograph as the design flow. Hydraulic simulation confirmed that the proposed bridge (minimum elevation: 1,318.00 m above sea level) would carry the flow without overflowing, although erosion protection is recommended. Finally, the study highlights the need to integrate sustainable soil management and climate monitoring to ensure the resilience of the infrastructure.