Abstract

VIOLA, Marcelo R.; MELLO, Carlos R. de; ACERBI JR., Fausto W.  and  SILVA, Antônio M. da. Hydrologic modeling in the Aiuruoca river basin, Minas Gerais State. Rev. bras. eng. agríc. ambient. [online]. 2009, vol.13, n.5, pp. 581-590. ISSN 1807-1929.  http://dx.doi.org/10.1590/S1415-43662009000500011.

The hydrological simulation of watersheds is one of the most important tools for water resources management due to the possibility of flow regime prediction. The Aiuruoca river basin is located in the Alto Rio Grande Basin, southern Minas Gerais State, with 2,094 km² of drainage area, and is very important drainage basin into the Camargos Hydropower Plant Reservoir (UHE - Camargos/CEMIG). In this context, this work had the objective of developing and applying a semi-conceptual hydrologic model, in semi-distributed approach, for hydrologic simulation in the Aiuruoca river basin, based on GIS and Remote Sensing tools, thus creating an important tool for management and planning of water resources in the region. The Nash-Sutcliffe coefficients (CNS), respectively, for calibration and validation periods, were 0.87 and 0.92, showing that the model is able to simulate the hydrologic impacts on the basin, predicting its condition for feeding of the Camargos Reservoir.

Keywords : hydrology; runoff; hydrologic models.