Resumo

BURBANO-GIRON, Jaime; DOMINGUEZ, Efraín  e  BARON-RUIZ, Oscar. Analysis of the relationship between morphometric and biophysical variables in the estimation of probability characteristics for surface water supply in Colombia. Rev. acad. colomb. cienc. exact. fis. nat. [online]. 2016, vol.40, n.156, pp.514-526. ISSN 0370-3908.  https://doi.org/10.18257/raccefyn.291.

Currently, superficial hydrological resources face high anthropogenic pressures due to the natural landscape transformation and the high demand levels of water for socioeconomic activities. Given this situation, the integrated modeling of the hydrological cycle has become a necessary tool for evaluating and predicting the consequences of landscape transformation over elements of the water cycle. Its successful application depends on the available information and the scale of the study. Based on the above, it was determined that the existing information in the country doesn’t allow the rigorous application of neither of them, therefore, efforts were made on a statistical model of Principal Component Analysis in order to relate derived morphometric, biophysical and hydrological information for the characterization of 421 basins generated in Colombia. As reported by the Hydrology, Meteorology and Environmental Studies Institute (IDEAM - acronym in Spanish) 91% the basins had a relative error regarding the basin area lower than 15%, the significance of the relationships between the morphometric, hydrological and biophysical variables was for most of the cases, significant. The above, validates even more the established relationships, highlighting that the results of the statistical model developed allows an estimation of the water demand in places without a hydrological register throughout morphometric and biophysical parameters of the basins without a hydrological instrumentation.

Palavras-chave : Integrated hydrological modeling; Hydrological cycle and surface water supply.

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