A blocked Tullahan River could trigger severe flooding, disrupt bus and rail services, and delay key infrastructure from La Mesa Dam to Manila Bay. Spanning Malabon, Caloocan, Valenzuela, and Navotas, this vital waterway supports flood control and transport reliability. Keeping it clear is critical to protect communities, maintain transit access, and ensure Metro Manila’s infrastructure growth remains sustainable and resilient.

The Pasig Marikina River Channel Improvement Project Phase IV is extended to 2031 with a ₱57.7B budget. The expanded scope includes flood control upgrades, drainage improvements, and river design works. It aims to protect Pasig, Marikina, Quezon City, Taytay, and Cainta from severe flooding. Backed by DPWH and JICA, this project strengthens Metro Manila and Rizal’s climate resilience.