Marcos Veloso De Menezes,Guilherme Fernandes Marques, Centro Federal de Educação Tecnológica de Minas Gerais, Engenharia Ambiental, marcosveloso@deii.cefetmg.br
The study presented herein deals with the changes in the rainfall-runoff regimen within the hydrographic basin of Córrego Seco Creek, situated within the metropolitan region of Belo Horizonte, State of Minas Gerais, Brazil; to assess changes in the local hydrology related to land usage. The basin under study features a wide diversity of land usage, including mining, residential, commercial and industrial areas. The IPH-II/WIN_IPH2 model was used and input data consisted of seepage measurements taken in the field, using constant-load double-ring infiltrometers; rainfall data obtained by tipping bucket type pluviograph; and runoff data using micro-diver datalogger. The study identified the basin’s current response to 10-year, 25- year and 50-year rainfall events, and also assessed different future land-usage scenarios and their probable consequences. The results and the calibrated model will be useful in the development of compensatory urban drainage measures within the basin, and to also identify storage that that should be restored to avoid the occurrence of high-waters.
Keywords: rainfall-runoff model, urban hydrology, mining.