In this work the hydrological processes were simulated in the Jaru river basin (3,950 km2) within the Rondônia State, Western Amazônia, through the hydrological distributed model SWAT. The land use and land cover change on the basin were analyzed for the years from 1998 to 2000. The results showed that the model simulated reasonably the processes involved in this study. The behavior of the modeling reflected the use characteristics and type of soil of the basin in a distributed way. The annual medium streamflow simulated was underestimated in 7%, considered appropriate at the scale level used and demonstrates the capacity of the model to integrate the effects of the spatial and temporal variability of the drainage area characteristics. The annual sediments production in the basin was estimated in 0.45 t.ha-1, being of the same order of magnitude of that obtained in another works in the same area. On the other hand, the use of the SWAT model and SIG ArcView interface, demonstrated high computational efficiency, making possible systematic analysis of the alterations that can happen in different areas of the basins.
Submetido por Manuel Enrique Gamero Guandique em 18-MAR-2004
Tema Científico do LBA: SH (Hidrologia e Química das Águas)