NOAH finishes mapping building footprints of 16 provinces

Project NOAH has finished mapping the building footprints of its 15 target provinces and the province of Aurora with the initiative of the Aurora PDDRMO.

With the help of several organizations and individuals (MAVC program, Aurora PDRRMO, UP Rockhounds, Geographic Society of the University of the Philippines-GSUP, Eastern Samar State University, Eastern Visayas State University, UP NSTW-CWTS program, OSM-PH contributors, etc.) and through the OpenStreetMap (OSM) website, NOAH finished mapping the building exposure data of the following provinces:

  1. Abra
  2. Aurora 
  3. Bataan
  4. Batangas

  5. Biliran
  6. Camiguin
  7. Cavite
  8. Eastern Samar
  9. Ilocos Norte
  10. Ilocos Sur
  11. Leyte
  12. Misamis Oriental
  13. Northern Samar 
  14. Samar 
  15. Southern Leyte 
  16. Zambales 


A municipality or city’s exposure data, which shows the population and structures that might be hit by natural hazards, is used in calculating its disaster risk. Risk is a function of hazard, vulnerability, exposure, and capacity (see: Disaster risk equation).

Disaster risk equation (source: UNISDR)


Part of the objectives of NOAH’s Integrated Scenario-based Assessment of Impacts and Hazards (ISAIAH) project is the completion of risk profiles for 15 target provinces. With this information, LGUs can craft their DRRM plans and make informed decisions when they are threatened by natural hazards.

The translated building footprint data mapped by NOAH through OSM is integrated into the WebSAFE application. WebSAFE is a web and mobile-based impact assessment tool used to identify the number of affected people and structures when a hazard scenario (i.e., flood, landslide, or storm surge) hits a certain area.

WebSAFE feature on the NOAH Website showing a sample calculation of how many buildings might be affected in the event of a 3-meter high storm surge in Mambajao, Camiguin

The identification of buildings in hazardous areas is useful in disaster preparedness activities, especially for preemptive evacuation. With WebSAFE, local governments have another reference aside from their own tools especially in knowing the quantity of relief goods they need to prepare in the event of evacuation. The application can also significantly help them plan for the prepositioning of their assets in case a severe weather event strikes.

Thank you for helping us in mapping the Philippines! With your continued support, we will be able to map more building footprints for other provinces in the country.

To learn how to map your community through OSM and contribute to the WebSAFE application, visit this link.

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