Proposição de curvas de distribuição temporal da precipitação de projeto para a região da bacia do Rio Maranguapinho em Fortaleza-Ce

Abstract

This study created temporal distribution curves for design rainfall in Fortaleza, Brazil. Using data from the local pluviograph, intense rainfall events were selected based on duration and precipitation amount criteria. The adopted methodology was based on the Huff method. A total of 36 temporal distribution curves for design rainfall were obtained for different quartiles of exceedance probabilities, which were compared to the curves from the Huff and Alternating Blocks methods. Simulations in the Maranguapinho basin allowed for the comparison of the resulting hydrographs from each distribution. It was concluded that the application of the Alternating Blocks method is not recommended for design rainfall in the city of Fortaleza, with the curves for the 2nd quartile from Fortaleza and Huff showing better results.