Abstract

BENAVIDES MORA, Victoria; TARLE PISSARRA, Teresa Cristina  and  GALBIATTI, João Antonio. Morphometric characterisation and classification of the Bobo river watershed in the Nariño department, Colombia. Ing. Investig. [online]. 2009, vol.29, n.3, pp.97-101. ISSN 0120-5609.

The object of this work was to make a morphometric characterization of the Bobo river watershed in the Nariño department in Colombia. A map was created from topographical maps (1:25.000 scale) using the drainage network and the limit of each 2^nd order microbasin as database. Dimensional, drainage network and relief morphometric parameters were evaluated for a later hydrological study. The drainage area was 224.97 km2, having a 71.31 km perimeter. The Bobo river watershed is considered to be 6^th order and has 176 2^nd order drainage channels, 34 3^rd order drainage channels, 9 4^th order drainage channels and 3 5^th order drainage channels. Average drainage density is 3.71km/km², reflecting its high density, having strong, dissected geological formation. The area has a typical Andean landuse pattern, having native wooded vegetation, traditional transitory potato and vegetable growing predominating.

Keywords : physical parameter; watershed; morphometry.

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