ABSTRACT
The volcano Nevado del Huila (VNH) in the South of Colombia’s Cordillera Central has erupted three times in the last 6 years, February 19 and April 18 of 2007 and November 20 of 2008 (Pulgarín et al, 2009), which had associated different effects as debris flows (lahars), which damage could be limited to infrastructure thanks to timely warning. However, the order of magnitude of these lahars and the prevailing potential for similar or even larger events poses significant hazards to local people, and make an appropriate lahar modeling a challenge which affected the population that live near to the Páez River banks (Worni et al, 2009).
