Flooding simulation and channeling in the valley of the Andes mountain range in the south of Peru

For this investigation, a maximum flow was generated with a hydrological simulation of extreme events in the southern zone of Peru of the Andes mountain range. The flow was reported to be 1,215.80 m³/s for the river Tambo. This flow was used to obtain the flood map of the valley. Subsequently, an earth dam has been designed to channel the flood. Finally, the flow of water was simulated again until the size and stability of the dam was adequate. The physiographic characteristics of the watershed were made with satellite geography and the GIS system. Probabilistic models and rainfall-runoff models were used for the frequency analysis. To simulate the flood, the two-dimensional differential equations of Saint-Venant were solved with the finite volume method; in order to do this, a net was made (networks), with the sizes of the cells being smaller than 5.0 m by 5.0 m, resulting in a total of 70,455 cells. In the flood zone, a direct topographic survey was carried out, along with measurements of other field data.