The hydrogeologic potential conditioning factors of hydrographic catchments of Upper Velhas River Basin, Southeastern Brazil.
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Data
2010
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Resumo
The hydrogeologic potential of a drainage
catchment represents its capacity of sustainable water
production, with good maintenance of the baseflows. In
basins of similar shapes and bio-climatic characteristics,
the potential will depend on several physical and anthropogenic
conditioning factors. The determination of the
hydrogeologic potential is a complex procedure, but
alternative methods exist, in which hydrologic series are
used to determine certain indexes, such as the recession
coefficient (a), the specific baseflow (SBF), the baseflow
index (BFI), transmissivity and storativity. Aiming at the
evaluation of the hydrogeologic potential and its conditioning
factors in the Maracuja´ River Basin (southeastern
Brazil), ten catchments were selected and monitored. The
catchments have distinct geologic and geomorphologic
characteristics but are submitted to similar climatic conditions.
The hydrogeologic potential is higher in crystalline
basement areas, especially where the relief is flat and the
regolith is thick; however, it is lower in the areas affected
by gullies. The advantages of the hydrologic method, in
particular to regions where information is scarce, are that it
is easily applied and of low cost, enabling the characterization
of the hydrogeologic potential and contributing to
the management of water resources.
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Palavras-chave
Hydrogeologic potential, Catchments, Baseflow, Recession coefficient
Citação
COSTA, F. M.; BACELLAR, L. de A. P. The hydrogeologic potential conditioning factors of hydrographic catchments of Upper Velhas River Basin, Southeastern Brazil. Revista Brasileira de Recursos Hídricos, v. 15, p. 38-54, 2010. Disponível em: <http://www.abrh.org.br/SGCv3/index.php?PUB=1&ID=5&SUMARIO=71>. Acesso em: 20 de jun. 2017.