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Manila Bulletin devider Business devider 'Habagat' secures Metro Manila's water supply in Sept.

'Habagat' secures Metro Manila's water supply in Sept.

Published Sep 2, 2023 07:24 am

At A Glance

  • Recent rainfall boosts water supply in Metro Manila. Angat Dam's current level sufficient to meet water supply needs for September, the Metropolitan Waterworks and Sewerage System (MWSS) said.<br>Water level at Angat Dam at 200.83 meters, shy by around 11 meters of the target, Southwest monsoon contributes to the rise in water level.<br>National Water Resources Board (NWRS) allocates 50 cubic meters per second for September, higher than last month's allocation of 49 cubic meters per second.<br>Water levels typically increase from September to December based on historical data of Angat, Ipo, and La Mesa dams<br>Despite sufficient supply in the watershed, caution advised not to be complacent about the current water level.

Recent rainfall has provided a much-needed boost to the water supply of Metro Manila, as the Metropolitan Waterworks and Sewerage System (MWSS) said the current level of Angat Dam will be sufficient to meet the region's needs for this month.

Patrick Dizon, MWSS spokesperson said on Saturday, Sept. 2, that the recent onslaught of the southwest monsoon, also known as habagat, has resulted in a notable increase in the water level at Angat Dam within the past two days.

Presently, the Angat’s water level stands at 200.83 meters, leaving a gap of around 11 meters to achieve MWSS’ yearend target range of 210 to 212 meters.

“For the whole month of September, the National Water Resources Board (NWRS) provided us with a distribution level of 50 cubic meters per second. That’s higher than last month’s allocation, which was 49 cubic meters per second,” Dizon said in a phone interview.

He also added that their priority is to optimize the utilization of water resources from the Angat watershed, aiming to minimize dependence on the dam as much as possible.

"This is [part of our] strategy to increase the elevation of Angat Dam instead of releasing water through spilling,” Dizon explained.

During the months of September to December, it is common for the water levels in the Angat, Ipo, and La Mesa dams to record an increase based on historical records.

“Using the historical inflows of the watershed, it can reach the target elevation for this year, and possibly even higher,” said Dizon.

Because the level of the water reservoir largely depends on occurring rainfall, the MWSS has also worked with the Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) for weather forecasts.

According to PAGASA, the current projection for strong landfalling typhoons happens during “Ber-Months” and would expect more rainfall to come. This would help replenish the volume of the dams after the El Niño phenomenon.

Despite having a sufficient amount in the watershed, Dizon advised the public not to be too complacent with the current water level.

“Since the target water level for this year is 210 to 212 meters, it has not been met yet. We should continue to conserve water,” he said.

The target amount for the Angat Dam is meant to stretch out until next year when El Niño strikes. (Gabriell Christel Galang)

Related Tags

water supply Metropolitan Waterworks and Sewerage System (MWSS) Angat Dam
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