Abstract
Severe rainfall associated with the passage of super-typhoon “Reming” on November 30, 2006 triggered lahar flows, landslides and flash floods on the south-eastern quadrant of Mayon Volcano, resulting in extensive damage to life and property. Among the affected areas, the towns of Guinobatan, Camalig and Daraga suffered the most damage, with numerous houses, roads and other infrastructures either buried or swept away by the flowing lahar and rampaging floodwaters. This paper outlines the observations from the reconnaissance work conducted at the affected sites following the disaster, with emphasis on the hydro-geological aspects of the disaster and their impact on civil engineering structures and other infrastructures. Moreover, the properties of the lahar samples obtained near Mayon Volcano were analyzed and compared with the lahar deposits from Mt. Pinatubo.
