Modelación Hidrodinámica y Morfológica del Río La Estrella, Limón
Proyecto de Investigación (VIE-5402-1421-3101).
The Atlantic coast is highly vulnerable to flooding due to its topography and changes in land use. This situation has weakened the water retention capacity of its watersheds increasing the destructive capacity of the flood events. The Limón Earthquake in 1991 was the phenomenon that marked a before and after, in terms of geological and morphological evolution of the basins in this area, modifying the traditional dynamics and stability of many river channels. One of the main affected watersheds is the lower part of La Estrella River, where La Estrella Valley is located. This area has faced an increase in the frequency and magnitude of the river overflow, a constant accumulation of sediments coming from the higher parts and an instability in the channel dynamics. This has increased the vulnerability of its inhabitants, productive activities and ecosystems that interact in this area. This project models the hydrodynamics and sediment transport in the lower part of La Estrella River (from the Valley to the river mouth) by means of the mathematical models HEC-RAS and IBER in one and two dimensions. It was able to obtain a better understanding of the river behavior, by identifying conditions and critical floe and sediment points. Different flow scenarios where also able to simulated based on the occurrence of extreme events useful for a proper basin management.