Modelo de regionalização de hidrogramas unitários para bacias hidrográficas do Ceará

Abstract

Understanding the hydrological characteristics of a region is essential to understanding its problems and, therefore, proposing solutions regarding water resources management. Therefore, the present study elaborated a regionalization model to obtain triangular unitary hydrographs from watershed located in dams of Ceará semiarid region, Brazil. The variables used in the non-linear regression equations were: drainage area of the watershed, main river length and time of concentration. Dam design data and bibliographic research with significant contributions to hydrological studies were used. In the obtained results it was verified good approximation between the non-linear regression equations and the triangular synthetic unit hydrograph method, fact confirmed by the statistical tests for each case. The conclusion is that the regionalization defined for these basins can be considered consistent and easy to apply for preliminary analysis in similar hydraulic projects.