The water level of Angat Dam in Bulacan went down slightly on Friday after rains earlier in the week helped it gain almost a meter above its critical level, the state weather bureau said.
Sonia Serrano, hydrologist of the Philippine Atmospheric, Geophysical and Astronomical Services Administration, noted Angat’s water level dipped to 161.69 meters as of 6 a.m. yesterday from 161.86 meters on Thursday.
Angat, which supplies most of the water needs of Metro Manila, was at 161.08 meters on Wednesday, Serrano noted.
She said there was no rainfall over the Angat watershed and the mountainous areas within the rivers of Matulid, Talaguio, and Maputi in Bulacan since Monday.
The rainwater that fell over the mountainous parts of the three tributaries ended up at the Angat watershed, Serrano added.
“The level increased slightly [on Thursday], but it was just negligible,” she told Manila Standard.
Based on the rainfall stations in Talaguio and Maputi, there were only isolated rainshowers in the areas, she said.
According to PAGASA, the low water supply at Angat Dam will persist for the next few days.