OTIMIZAÇÃO DE PARÂMETROS DE MODELO HIDROLÓGICO USANDO PESQUISA HARMÔNICA

The optimization of rainfall-runoff model parameters as a function of physical and geomorphic features of the hydrological basins makes these models applicable to areas with few or even null data availability. This paper describes a method that uses the Harmony Search algorithm to optimize the parameters of a rainfall-runoff model and obtain watershed hydrographs for areas with unavailable database on water level or discharge database. The streamflow and rainfall data used were obtained from the Aquidauana River Watershed (MS, Brazil). Information on the physical characteristics of the basin was also used to optimize model parameters and evaluate the method. The results obtained were promising, indicating that the method used is efficient and has rapid convergence.