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The DENR-Mines and Geosciences Bureau is the government agency primarily responsible for the implementation
of Mining Act of 1995. It has direct charge in the administration and disposition of mineral lands and mineral resources. It
undertakes geological researches, as well as mineral exploration surveys.
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Geohazard Bulletin
THE DENR-MGB GEOHAZARDS ASSESSMENT AND MAPPING PROGRAM
October 28, 2009
| The Geohazards Mapping and Assessment Program of the DENR-MGB is animportant component of the government’s disaster management andmitigation program in order to reduce the loss of lives and propertiesbrought about by natural disasters.
It involves both theidentification of areas of the country that are prone or susceptible tovarious geologic hazards, like rain-induced landslides, floods,flash-floods, storm surge, coastal erosion, sea-level rise and othernatural events, and dissemination of these information to increasepublic awareness. The output of the program is equally important forland use planning (CLUPs), land development and the emerging concern onclimate-change adaptation.
The program has five components:
1. Remote sensing analysis generates data using air photographs,satellite (LandSat, ERTS) and radar images to identify features thatcould indicate unstable areas or impending physical events;
2. Actual conduct of field surveys wherein on-site conditions aredocumented and ground data are generated. Historical background of pastdisasters or natural events are also noted. Indicative signs of groundinstability and pending events are duly recorded;
3. Datagenerated during the field survey are stored, processed and managedunder a GIS platform for ease of handling and retrieval. The resultingdatabase is continually updated as recent data are generated;
4. Preparation of geohazards susceptibility maps in the 1:50,000 scalefor rain-induced landslides and floods/flashfloods on the basis of allavailable data. More detailed maps of 1:10,000 scale are also preparedfor specific critical areas of concern although only limited coveragehad so far been achieved;
5. Information disseminationthrough the conduct of seminars, workshops, and other informationcampaigns to explain the nature of geologic hazards and the use of themaps. IEC materials like posters, pamphlets, video discs (DVDs andVCDs), flyers and signages are also provided to various stakeholders.
Featured Geohazard Maps:
Click here to view the complete list of geohazard maps available at the DENR-MGB or click here to view the interactive map.
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