Operation of the Hydrological Warning System in the Caí River Basin Preliminary Studies (PAP014968)

Código

PAP014968

Autores

Márcia Conceição Rodrigues Pedrollo, Patricia Wagner Soterio, Olavo Correa Pedrollo

Tema

Flood forecasting and early warning systems

Resumo

This paper presents various issues that arose during the deployment andoperation of the flood warning system in the Caí river basin, for which the answers were soughtby the analysis of the historical series of river levels and of rainfalls. These analyzes includedsetting threshold river levels for the location for which flood warnings are required, research themost likely months of flooding, defining low, medium and high levels for certain gauging station,estimating the travel time of the flood wave between monitoring points, and the totals of rain thatsignal risk of flooding. Particularly, it is studied a simple criterion for setting the flood warningthreshold level. The knowledge acquired has proved important for the understanding of floodevents, providing relevant subsidies to the operation of warning systems.