Continuous rains raise water levels of six dams

By Ma. Cristina Arayata

September 4, 2023, 7:31 pm

MANILA – The continuous rains being experienced in the country for two weeks have raised the water level of six dams, a government hydrologist said Monday.

Pantabangan, Magat, Angat, Binga, San Roque and Caliraya dams' water levels have increased within the 24-hour deviation period, said Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA) hydrologist Jason Bausa.

He said while Ipo Dam's water level has decreased by .06 meter within the 24-hour deviation period, it is still high -- with 101.01 meters water level (the normal level should be below 101 meters).

"One gate at Ipo Dam has been opened since Sept. 3 because they (management) are expecting heavy rains," Bausa told the Philippine News Agency (PNA).

Meanwhile, Binga Dam opened two gates as its water increased by .09 meter. Two gates were also opened in Ambuklao Dam although its water level was down by .02 meter.

Ambuklao and Binga's normal water levels are 752 meters and 575 meters, respectively. Ambuklao's water level is nearing 752 meters, while the water level of Binga Dam reached 573.32 meters.

The water levels of Pantabangan rose by .34 meter; Magat, .67 meter, Angat, .08 meter; San Roque, 1.64 meters and Caliraya dams, 1.2 meters.

Angat Dam supplies 98 percent of the potable water in Metro Manila through the Metropolitan Waterworks and Sewerage System.

Pantabangan Dam, on the other hand, is a multi-purpose dam mainly used for hydroelectric power generation and irrigation for the rice fields of Central Luzon provinces but nearby communities have also made a living out of fishing in the reservoir.

Bausa said La Mesa Dam's water level was down by .13 meter.

"We urge the public to monitor with the Disaster Risk Reduction offices as rains caused by the southwest monsoon might continue," Bausa said.

For the past two weeks, the southwest monsoon has been enhanced by Typhoon Goring.

Hanna exited the Philippine Area of Responsibility on Monday, but based on PAGASA's 5 p.m. forecast, parts of the country will continue to experience rains due to the southwest monsoon. (PNA)