Every problem contains within itself the seed of its own solution. The solution to flooding is really very simple: Give the excess waters a place to go. That is the function of wetlands, ponds, and lakes.
But what have we done? We have paved with concrete all available lands – including wetlands, low-lying, and flood-prone areas – and turned them into housing subdivisions and commercial centers. In other words, where there used to be water, we built our human settlements. And then we complain that there is water in the form of floods. Sino ang tanga d’yan? Ang tubig o ang tao?
via Learning to breathe underwater.