If you build drainage adapted to this kind of rain and maintain them, there won't be flooding.With the amount of rain that fell on such a short period of time, flooding is inevitable regardless of the drainage.
The other thing about "normal" Dominican rain is that it's heavy. Many Dominicans compare SD with places like NYC, Boston, etc and often claim a little bit of rain causes flooding in SD. Well, it doesn't truly rains in NYC, Boston, etc as it does in SD except in a handful of days during summer. Guess what happens when is rains like in SD? Even highways floods, that should give an idea.
That could help, but even in Miami it floods with "normal" rain. Even on ritzy Brickel Ave. There is only so much that can be done, IMO.If you build drainage adapted to this kind of rain and maintain them, there won't be flooding.
And don't forget to level the streets the correct way....
That is only 3mtrs above sealevel, not enough gravity to get rid of it.That could help, but even in Miami it floods with "normal" rain. Even on ritzy Brickel Ave. There is only so much that can be done, IMO.
Sad.Regarding the retaining wall that collapsed on 27 de Febrero Ave, it appears the wall wasn't built according to code. It's missing the drainage that such walls are suppose to have and the wall was not tied correctly to the rock. If that's the case with the retaining wall that collapsed, then it's safe to assume it applies to all the tunnels and underpasses done in the first term of Leonel Fernández.
To make matters worse, the CODIA and several civilians had commented and contacted the authorities regarding cracks on that wall. This span to over 2 decades and nothing was done, it fell on deaf ears.
Given all of this, I'm surprised that wall remain standing for so long.