Enough water in Angat Dam to supply Metro Manila during dry season – PAGASA

Published March 22, 2021, 10:15 PM

by Ellalyn De Vera-Ruiz

Metro Manila and its neighboring areas will have sufficient water supply to last through the hot and dry months this year, the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) said on Monday, March 22.


PAGASA hydrologist Richard Orendain said the current water level of Angat Dam, as well as La Mesa Dam, will be enough to supply the domestic water needs of Metro Manila, including some parts of Bulacan, Rizal, and Laguna.

“Napakataas pa ng elevation [ng Angat Dam]. Hindi magkukulang sa tubig ngayon hanggang sa June-July na recovery period dahil sa shift papuntang southwest monsoon [season]. Magkakaroon na ng konting pag-ulan sa Angat Dam. (The elevation of Angat Dam is still very high. There will be no shortage of water until the June-July recovery period due to the shift to southwest monsoon season. There will already be some rains over Angat Dam by that time),” Orendain said during the PAGASA’s climate outlook forum.

As of Monday, the water level at Angat was 207.57 meters.

Although it is below its 212-meter normal high water level, Orendain said the current level of Angat Dam is still within the acceptable rule curve elevation of 192.49 meters.

Rule curve elevation is the minimum reservoir elevation needed to be maintained by dam operators to ensure the availability of water for irrigation, power generation, and domestic supply.

Meanwhile, La Mesa Dam’s level was at 79.03 meters, as of Monday.

Orendain noted that in 2019, the level of La Mesa Dam in Quezon City was almost depleted, but was able to normalize in 2020.

It was able to fully recover this year, which means there will be enough drinking water for Metro Manila residents in the coming months, he added.

PAGASA has yet to officially declare the end of northeast monsoon or “amihan” season and onset of warm and dry season this year.

Last year, the start of dry season was declared on March 20.