After significant rainfall over the past two days, La Mesa Dam in Quezon City overflowed when it reached its spilling level of 80.15 meters at 6 p.m. on Wednesday, July 24.
The Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) issued a warning on Wednesday morning as the water level at La Mesa Dam was anticipated to rise due to continuous occasional rains from the southwest monsoon, or “habagat,” enhanced by super typhoon “Carina” (international name “Gaemi”).
Starting from 8 a.m. on July 23, the water level at the dam increased by 3.09 meters, climbing from 77.07 meters to its current level of 80.16 meters.
Since La Mesa Dam does not have a gate to control the accumulation of floodwaters, PAGASA warned that any excess water beyond the 80.15-meter spilling level would result in overflow.
The discharged water from La Mesa Dam is expected to affect low-lying areas along the Tullahan River in Quezon City, particularly Fairview, Forest Hills Subdivision, Quirino Highway, Sta. Quiteria, and San Bartolome.
It will also affect areas in Valenzuela, specifically Barangay Ligon, North Expressway, and La Huerta Subdivision, as well as in Malabon.
PAGASA advised all residents living in these areas, especially those near river banks, to remain vigilant and prepare for potential flooding.