Rizal Philippines | October 4, 2014
From Wikipedia on Floodway
The floodgates
It has been a week since I got the pictures for this, but I am always postponing making the post because I believe this is a rather challenging and difficult study. However we must confront this issue This is politically unpalatable. DEaling with vote rich settlement is a no no, But not doing so, not confronting reality gets the problem buried. In the meantime, we suffer the consequences: frequent flooding, loss of property, loss of lives. etc
Background:
Manggahan floodway was built in 1986 at a cost of Php 1.1 billion. Marikina river flood water is diverted to the Manggahan spillway, instead of going to Pasig River, and MM, and to prevent flooding in Malacanang. The water goes to Laguna Lake where it is impounded and released later to Manila bay via Napindan channel and Pasig River. Because of complication brought by low and high tide and currents, and the 12 km distance to Manila bay, the effective hours of draining the LLake is effectively only 6 hours a day. Thus, draining the floodwaters from Laguna lake takes 3 to 6 months.
