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MANILA - Angat Dam may reach critical water level by May, PAGASA's hydrometeorology division said Friday.

PAGASA hydrologist Richard Orendain said Angat Dam's water level is currently at 193.96 meters, higher compared to the same period last year.

However, it may reach 182 by the end of April and 177.29 by May, below its low water level of 180 meters.

"Kung ikukumpara natin itong level ni Angat ngayon than 'yung last year the same month din, halos mataas pa ito kumpara natin last year," Orendain told radio DZMM.

"Based dun sa nag-simulate kami 2 days ago, by end of April halos near critical elevation na ito, 182 ang elevation nito by end of April. Then by May aabot ito ng 177.29, which is nasa critical level na. Pero once na umabot kasi ng 180 meters or below 'yung elevation ni Angat Dam, automatic cut 'yung irrigation."

La Mesa Dam's water level remains critical, Orendain said. This has triggered a shortage of water supply in the east zone of Metro Manila serviced by Manila Water.

The concessionaire earlier said it has restored services to 97 percent of customers, who have at least 8 to 12-hour water availability at ground floor level.

The water level of Magat Dam in Isabela, meanwhile, is near critical at 163.09 from its low water level of 160 meters.

Orendain, however, assured that there will be no supply shortage.

"Sa ngayon konti na lang 'yung susuplayan ng tubig for irrigation ng Magat Dam dahil halos lahat nasuplayan na dahil anihan na po," he said.

Pantabangan Dam in Nueva Ecija has a high elevation of 198.38 meters.

The Ambuklao Dam has an elevation level of 748.89 meters. The water being released by the dam flows into the Binga Dam, and then to San Roque Dam, which currently has an elevation of 260.06 meters, far from its critical level of 225 meters.

Caliraya Dam in Laguna has an elevation level of 286 meters, Orendain said.

"Ang kagandahan sa Caliraya Dam, once nag generate sila ng power, after generation hihigupin nila 'yung tubig pabalik sa dam kaya hindi po ito mauubusan ng tubig," he said.