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I found these interactive geohazard google mapS while browsing the National Institute of Geological Science’s Website.  They allocated a portion (at the lower right) of their homepage for these maps.  They aptly named it the  “Disaster Zone” .  You could see which areas will be flooded if it rains similar to Ondoy’s.  You could also see where the latest earthquakes are and the Marikina fault line that is supper imposed on the Philippine map.  Of course, don’t be dumb to think that you will not be affected by an earthquake if your dwelling is not on the fault line!

Just click on the images below to open the maps.  I also put the links at my side bar.  It is important to read the note on how they generated the flood map.

Although I guess the maps are still in Beta,  let’s thank  NIGS and the guys at Flo2d simulation team for compiling the data, doing the simulations, and presenting them in such wonderful visuals.  The NIGS’ team has the following sources.

The earthquake map is from the USGS earthquake feeds.

The Marikina fault map is based on Phivocs’ map which they map in google map.

And here is the complete note of the floods’ map from the team.

The flood hazards depicted in this site are the product of flood simulations using Flo2d, a Federal Emergency Management Agency (FEMA)-approved flood routing application software. The inundation maps were simulated using rainfall delivered by tropical storm Ondoy on 26 September 2009 over 3 arc second topography from the Shuttle Radar Topography Mission (SRTM). The rainfall event is considered as an extreme event that can generate floods with a 100-150 year return period.

These hazard maps are indicative inundation maps for large flood events and useful only for knowing where not to be during extremely heavy rainfall. For local governments, these flood hazard maps can be used for localized emergency response (i.e. evacuation and access routes, road closures, siting of key rescue facilities) and for urban planning. It should not be used for insurance and bank appraisal purposes.

These hazard maps are only as good as the topographic map base that was used in the flood simulation. Detailed and more accurate flood hazard maps of any city can be conducted upon request to the National Institute of Geological Sciences, University of the Philippines Flo2d simulation team.

Email the guys at inquire@nababaha.com for more details of their work.

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