Modelagem do escoamento no baixo rio Paraíba/PB e Mamanguape para fins de regionalização hidrológica.

Abstract

In this dissertation the runoff modeling in watersheds within the lower part of the Paraíba river basin (3925,41 km2), and Mamanguape (3522,69 km2) was carried out with the distributed model NAVMO, which is capable of considering the variability of the climate (e.g., precipitation) and catchment system (e.g., soils, relief, land use), in order to support future regional analyses in the whole river system, in order to realize the hydrologic regionalization in the whole river system. The model was calibrated by comparing annual values of volumes and peaks, as well as daily hydrographs, and verified via different criterions. The results showed that the calibration was successfully accomplished for the few catchments where data are available, with mean coefficients of determination (R2) of 0.7976 (volumes) and 0.8392 (peaks). The mean values of R2 for the validation phase were lower than those from the calibration, 0.2591 (volumes) and 0.2448 (peaks), but with reasonable comparisons of the daily hydrographs.