“So what about Eastwood Greenview in the shadow of Wawa Dam and La Mesa Dam?”

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hi very informative, our place is in East wood San Rafael, Montalban, It is one of the highlands subdivision. God forbid if the big quake would happen dp you think La Mesa dam and that of Wawa will be dangerous for the area.

an interesting scenario. just would happen should these dams break and what can the catastrophe be like? in my teens, i’ve been up the ramp at the side of the river leading to the top of wawa dam. at a certain point, it was like looking down from the rooftop of a small building to giant white boulders the size of a house on the river below, but at eye level a feet ahead was the top of the dam with the placid water of the river on the other side kissing the brim of the man-made structure. i remember realizing that, if the dam breaks, untold hundreds of thousands of metric tons of water would come cascading into sure destruction and inundation of everything in its path.

i am not prepared to do the math and take into account how far the force of the rampaging waters will bring the destruction to. to do so would be to speculate and trifle with people’s lives, although the possibility of the grim scenario playing out is always there. so the best i can do is to conduct a virtual survey of the area through google earth.

i have posted several images below that show the elevation of the different terrains, and from there one may get a gut feel of the force of the water traveling from wawa dam, how the different turns of the river including land surface features that may possibly break and slow down the river flow. i have also added images that show the la mesa watershed and eco-park maybe to allow these different scenario elements to interplay within the fences of our imagination.

However, ultimately, i welcome experts and scientists to interpret the visual data and tell just what can happen to the communities in the area if the dams were to break?

Please note: the thin red line intruding on the landscape is the EAST VALLEY FAULT.

* * *

Wawa Dam

01_Eastwood and Wawa Dam02_Eastwood and Wawa Dam03_Eastwood and Wawa Dam04_Eastwood and Wawa Dam05_Eastwood and Wawa Dam06_Eastwood and Wawa Dam07_Eastwood and Wawa Dam08_Eastwood and Wawa Dam

terrain elevation

La Mesa Watershed and Eco-park

09_Eastwood and Wawa Dam10_Eastwood and Wawa Dam11_Eastwood and Wawa Dam12_Eastwood and Wawa Dam

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6 Responses to “So what about Eastwood Greenview in the shadow of Wawa Dam and La Mesa Dam?”

  1. jpb0716 says:

    hi sir..i like this site..very informative with images for better appreciation..Id like to note however that structures like dam or houses built near the faultline are safe provided they are designed by structural engineers who follows the code and built by contractors who follows the design drawings..please refer to this news..https://civilengstude.wordpress.com/ or http://www.gmanetwork.com/news/story/479394/scitech/science/can-manila-survive-a-nepal-level-earthquake

    for the case of wawa dam, i cant comment on its structural integrity if they have retrofitted it according to the latest code requirement..


  2. DOSENA ATB says:

    it happened already during typhoon ondoy


  3. sam says:

    how much wide the fault line from wawa dam to sanjose rodriguez rizal


    • tulisanes says:

      i stumbled on the fault line/s in the wawa dam vicinity by accident. i have no data on those faults except from a philippine map showing all the faults nation-wide which i downloaded from the phivolcs web site. it was a quick and fast and dirty job, including scaling up a real small section of an image, that a thin fine line depicting a faultline when blown up results in a rough thick line akin to broad brush strokes –hence, i think, why you ask “how wide the fault line from wawa dam.” again, i do not have the data that i cannot give pinpoint accuracy.


  4. R nolan says:

    It seems the Government and other officials do not take this as a disaster waiting to happen.


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