GEOLOGICAL SOCIETY OF THE PHILIPPINES

FACTORS CONTRIBUTING TO THE FLOODING AND MASS  WASTING  IN  BARANGAY  UPPER  DISAKAN, MANUKAN, ZAMBOANGA DEL NORTE, MINDANAO, PHILIPPINES

 

GEOSCIENCES DIVISION

Mines & Geosciences Bureau, R-IX

October 2001

 

A B S T R A C T

 

 

            On the 11th and 12th of August 2001, a combined flooding and mass wasting that occurred in Barangay Upper Disakan, Manukan, Zamboanga Del Norte left 21 people dead, 8 missing, and 62 injured. Of the 274 residences affected, 123 were completely destroyed. The double disaster is attributed to a number of factors, principal of which is the abnormally high amount of rainfall that fell on most parts of eastern Zamboanga during that period.

 

In terms of flooding, the morphology of the area played a key role in amplifying the calamity. As regards the mass wasting, although this event was similarly an offshoot of the incessant rains, what further compounded the problem was the structurally disrupted nature of the underlying strata including the remobilization of ancient slide materials.

 

 
To get the whole report , please call (633-9025) or email us: info@geolsocphil.org 
 

Geological Society of the Philippines

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128 Pioneer Street, Mandaluyong City, Philippines

Tel: +(63-2) 633-9025