Hidrogeografía de una cuenca de usos múltiples ubicada en la cordillera de la Costa, Venezuela

Abstract

The Tirgua river basin located in the Coastal Mountain Range – Venezuela, was analyzed combining both the hydrogeographic and the hydrological landscapes approaches. An automated estimation of geomorphometric parameters related to: form, relief, and drainage for the watersheds was done, being processed using statistical methods to define a spatial differentiation. Precipitation, temperature and evapotranspiration were spatially analyzed using interpolation methods, the streamflow of the watersheds was estimated using an indirect method and the land use typologies were spatially considered towards the hydrological response. The Principal Component Analysis lead to discriminate four groups of watersheds, mainly explained by form and relief signatures. The hydrological response was mostly explained by the location of watersheds inside the river basin, relief and the climate dynamic. The combination of these approaches was useful in studying poorly ungauged basins.