MANILA (4th UPDATE)—Hundreds of families living near the Marikina River fled their homes and many more continued to do so into the night, as rain fell and floodwaters rose unabated on Saturday.

The river water level swelled up to a peak of 20.2 meters at about 8:30 p.m., according to Marikina's public information office.

As of 4:50 p.m., 528 families or 2,530 residents have sought shelter at 7 evacuation centers.

Bahagi ng kalsada sa IVC na malapit sa Marikina River, hindi na madaanan #TrafficPatrol | via Bayan Patroller Angelica Malto pic.twitter.com/RiHLXweIW3

— ABS-CBN News (@ABSCBNNews) August 11, 2018

Marikina Mayor Marcelino Teodoro said the local government has evacuated residents because officials expect Marikina River's water level to breach 19 meters.

"Parang Ondoy ang nangyayari sa ngayon dahil sa patuloy na lakas ng ulan na binubuhos sa ganitong kaiksing panahon," Teodoro told radio DZMM.

"Sa lakas ng ulan at mabilis na pagtaas ng tubig, tuloy-tuloy pa rin ang paglikas ng tao. Baka umabot 'to ng 10,000 hanggang mamaya."

As of 7:02 p.m., the water level of Marikina River has reached 19.4 meters.

Watch more in iWantv or TFC.tv

Teodoro also sought assistance from the national government and other agencies.

"Lahat ng assets ng ating pamahalaan na local ay ginagamit na natin ngayon. We’re even asking assistance now at this point from other government agency, at pati yung iba pa nating mga organisasyon," he said.

"Natutunan natin nung Ondoy, hindi kaya ng pamahalaan lamang ang ganitong sakuna. Lahat ay kailangang magtulong-tulong at buong pamayanan ay kailangan kumilos."