Resumo

LARREAL, M et al. Geomorphological description of the Pueblo Viejo river basin, Zulia State. Rev. Fac. Agron. [online]. 2007, vol.24, n.1, pp.34-46. ISSN 0378-7818.

Using as reference the MARN methodology for geo morphological survey at 1:50.000, an interpretation of storage area of Burro Negro dam area, Pueblo Viejo river basin (Zulia State) was carried out, using aerial photograph, satellite images and field observation descriptions. Taking into account the importance of this basin for water supplies in Oriental Zone of Maracaibo Lake and for agricultural and livestock production under irrigation in its alluvial plain, it is necessary the establishment of a management and conservation of high and media basin plan. The following landscapes and relief forms were identified: Mountain with Tertiary gradient structures (rectilinear, rectilinear convex, rectilinear concave and rectilinear concave-convex slopes). Valley with undifferentiated sediments (low presence within Mountain, high within "Piedemonte"). "Piedmont" with sloping planes (cones, terraces, burst terraces and glacis). Hills with variable dissection grade, plains with alluvial and marsh (levees basin). Pueblo Viejo river basin represents the harnessing area of the Burro Negro dam, human activities especially in the higher part of the basin are threatening its conservation. Therefore it is necessary to elaborate a work planning for conservation and management of the medium and high parts of the basin due to this is an extremely important source of water for consumption and for irrigation in eastern zone of Zulia state.

Palavras-chave : geomorphology; relief; landscape; river basin.