MANILA (UPDATED) - La Mesa and other dams in the country on Monday reached near-spilling levels amid heavy monsoon rains, according to state weather bureau PAGASA.
PAGASA data as of August 4 shows that the water level in La Mesa, which is located in Quezon City, has reached 79.43 meters -- close to its spilling level of 80.15 meters.
Residents along the Tullahan river will be in danger if the water in the dam overflows.
PAGASA also showed that the Ipo Dam in Bulacan has gone past its spilling level of 100.80m.
The Binga and Caliraya dams are also near their spilling levels.
If dams in Luzon open their floodgates, these are the areas and floodways that will be affected.
Marikina raises alarm level 1
Meanwhile, alarm level 1 was hosted Monday night for communities living along the Marikina River as the river's water level reached 15 meters, the city government said.
The Marikina City Public Information Office (PIO) hoisted the alarm at 8:30 p.m.
It said 6 of 8 floodgates on the river have been opened.
Under the Marikina River's alert system, alarm level 1 serves as a warning when the river's water level reaches 15m.
Alarm level 2, which means "prepare," is raised when the water reaches 16 meters.
Evacuation starts when alarm level 3 is raised, or when water reaches is 17 meters.
Forced evacuation is implemented when the alarm reaches critical level, or when when the water rises to 18 or more meters.
Typhoon Jose Heavy has intensified monsoon rains in central and northern Luzon and Metro Manila.