Pasig-Marikina River Channel Improvement Project: Supplemental Environmental Impact Statement

Published Date: 

The Pasig-Marikina-San Juan River System, of which total catchment area is 635 km2, runs through the center of Metro Manila and flows out to the Manila Bay. Its main tributaries, the San Juan River and Napindan River, join the main stream at about 7.1 km and 17.1 km upstream from the Pasig River mouth, respectively. The three largest waterways contribute largely to the flooding in the metropolis brought about by the riverbank overflow of floodwaters.

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