Efectos de la base cartográfica en la simulación hidráulica de las inundaciones fluviales. Caso de estudio

Río Baconao

Abstract

This research examines the effect of mapping in the results of hydraulic simulation with HEC-RAS software. Five Digital Terrain Models were created from different sources: four from vector mapping contours at various scales, and one obtained from a survey with GPS in conjunction with a Total Station. The latter was established as a baseline to determine the errors imposed by the use of such cartography in the representation of the main channel and floodplains and reveal their influence on the results of the simulation. Finally, depending on the map used, the differences to represent the same point on the ground were from 2.88 to 18.82 m in height, which significantly influence the calculation of water surface elevation and flooded area, with errors founded 1.6 to 2.6 m and 0.039-0.283 km 2 respectively. It shows that mapping largely determines the outcome of the simulation.</