Manggahan Floodway, Flood control channel in Pasig, Philippines.
Manggahan Floodway is a water control channel in Pasig that connects two rivers and directs excess water away during heavy rainfall. The facility protects nearby neighborhoods and helps manage flooding in the metropolitan area during monsoon seasons.
The floodway was built in the late 1990s to address growing flood problems in the densely populated metropolitan area. Its completion significantly reduced recurring flood damage in many neighborhoods that faced seasonal water issues.
Local community groups conduct regular cleaning activities along the waterway banks to maintain the channel's environmental condition and water flow capacity.
The floodway can be accessed from surrounding roads and bridges that offer good views of the channel. It is best visited outside the rainy season when water levels are lower and the area is safer and more comfortable to explore.
The channel features a reverse flow mechanism that automatically shifts water direction when water levels in nearby Laguna de Bay exceed those of the Marikina. This smart system prevents backflow and protects surrounding areas from flooding from unexpected directions.
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