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.
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