Water level in major dams in Luzon on the rise amid rains
by Marje Pelayo | Posted on Monday, July 23rd, 2018
Photo captured by Charisse Cuaresma Laguerder yesterday in San Roque Dam located at Brgy. Cayanga Bugallon, Pangasinan
QUEZON CITY, Philippines – Water level in major dams in Luzon continue to rise as multiple weather systems affect the country.
As of 6:00 a.m. Monday (July 23), Angat Dam’s water level in Bulacan rose by one meter from 195.8m on Sunday to 196.8m today.
At La Mesa Dam in Quezon City, water level rose to 76.03m today from 75.86m yesterday.
Water level at Ambuklao and Binga Dams exceeded critical level which prompted the opening of gates to facilitate release.
Ambuklao Dam in Benguet recorded an increase in water level by 0.76m from 750.26m yesterday to 751.02m today. Three of the dam’s gates remain open at a height of 1.5m.
Binga Dam in Agno River, also in Benguet, has recorded an increase in water reserve by almost a meter from 573.26m yesterday to 574.24m today. Four of the dam’s gates also remain open at a height of 4m.
Meanwhile, an embankment dam in Agno River, the San Roque Dam recorded the highest increase of 3.68m from 263.10m yesterday to 266.78m today.
Nueva Ecija’s Pantabangan Dam marked an increase of 1.32m from 191.28m yesterday to 192.6m today.
Magat Dam’s level in Cagayan has rose by 1.09m from 185.80m yesterday to 186.89m today while water level in Caliraya Dam in Lumban, Laguna also increased by 1.05m from 286.71m yesterday to 287.76m today. — Rey Pelayo / Marje Pelayo
by Robie de Guzman | Posted on Tuesday, June 18th, 2019
MANILA, Philippines – The National Water Resources Board (NWRB) is set to cut the water allocation for Metro Manila as the water level at Angat Dam nears critical level.
The NWRB said on Tuesday that the technical working group has proposed to reduce the allocation for the Metropolitan Waterworks and Sewerage System (MWSS) from 46 cubic meters per second (cms) to 40 cms from June 19 to 21.
The NWRB said this is to fine tune the preparation of the Low-Level Outlet (LLO) as a back-up water discharge and to lessen the effect of limited water supply in the coming days before the Angat dam breaches the critical level of 160 meters.
“Ito po yung gusto nating i-manage although limited yung allocation na binibigay natin, this is part of the contingency plan,to manage the limited water supply sa Angat,” said Servillo David, executive director of NWRB.
The agency said that as of 6 a.m. Tuesday, the Angat Dam water level is at 161.78 meters. It is projected to reach the critical level mark in the next three days.
The NWRB said that assuming that the 160-meter level is breached as projected on June 22, the allocation for the MWSS will be adjusted again to give way to the shutting down of the auxiliary unit.
At least 36 cms will be allocated for the MWSS until the dam further declines to 150 meters if there is no significant inflow in the coming days.
The NWRB said that based on the forecast of the Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa), the earliest downpour is expected in the last week of June because a monsoon break, which lessens the chance of rainfall, prevails in the country.
“This will considerably impact the normal delivery of services of both Metro Manila concessionaires, Maynilad and Manila Water and the Bulacan concessionaire. Expect rotational water service interruptions which will be announced the soonest possible time,” the NWRB said.
The agency appeals to the public anew to conserve and use water wisely. (with details from Joan Nano)
by Marje Pelayo | Posted on Monday, June 17th, 2019
MANILA, Philippines – Water level in Angat Dam is nearing critical level, according to the National Water Resources Board (NWRB), despite state weather bureau PAGASA’s announcement of the onset of the rainy season last Friday (June 14).
Thus, customers of Manila Water and Maynilad are advised to store water in the days to come in preparation for possible water problems.
“We wanted to clarify na sa ngayon hindi pa ganuoon ka-komportable ang sitwasyon kung ang pinaguusapan natin ay ang suplay ng tubig sa metro manila,” explained NWRB Director Sevillo David Jr. said.
(We wanted to clarify that we cannot be that comfortable with the current situation in terms of water supply in Metro Manila.)
“Kasi po sa ngayon is way below normal po and natatanggap nating tubig sa Angat Dam,” he added.
(It is because the (water supply) we receive for Angat Dam is still way below normal.)
As of 6:00 a.m. Monday (June 17), Angat Dam’s water level is at 162.39 meters, only about two meters high that its critical level of 160 meters.
According to the NWRB, Angat Dam can still supply the water requirements to Metro Manila, Cavite, Rizal, and Bulacan even with only 160 meters to 155 meters water reserve.
However, the public will have to work on a very limited supply of water if that happens.
The NWRB said Angat Dam’s reserve may dip up to 155 meters if rains will be scarce until the third week of July.
PAGASA said the El Nino phenomenon may persist up to October this year and the only way to increase water level in Angat Dam is through the entry of tropical cyclones.
“Actually, itong mga dams naman natin talagang mapupuno ito. Two to three bagyo lang puno na iyan (Actually, two to three cyclones are enough to fill our dams),” said DR. Esperanza Cayanan, Chief of PAGASA Weather Forecasting Division.
Maynilad and Manila Water started implementing low pressure to no water during peak hours to their customers since last week.
But if Angat Dam’s water level reaches the critical level, the water concessionaires will opt to implement water service interruptions during peak hours.
The water distributor assured, however, that they will give their customers enough time to store water for their domestic needs prior to service interruptions.
“When that happens na mareach natin ang 160 meters sa Angat Dam then we would have to implement officially this time yung rotational service interruptions na and it will be implemented mararamdaman during peak hours,” said Jennifer Rufo of Maynilad.
(When that happens that Angat Dam reaches 160 meters, we would have to implement officially the rotational service interruption during peak hours.)
“Ang standing order namin is as much as possible gawin natin sa gabi. Pero siguro may mga pagkakataon yung ibang ibang areas depending on the design of the distribution network may ibang tatamaan na during peak,” said Ferdinand Dela Cruz of Manila Water.
(Our standing order is to implement it as much as possible in the evening. But there would be instances in some areas depending on the design of the distribution network that the interruptions would be during peak hours.)
If Angat Dam’s water level reaches 155 meters this year, it will be the lowest in history according to the NWRB as compared to 157 meters, the lowest recorded in 2010. (with reports from Joan Nano)
by Robie de Guzman | Posted on Monday, June 17th, 2019
MANILA, Philippines – East Zone concessionaire Manila Water Company Inc. hinted at the possibility of implementing rotational water service interruptions as the water level in Angat dam continues to drop despite recent rains.
In an advisory posted on Facebook Sunday, the Manila Water said the Angat dam level has further dipped and is nearing the critical level of 160 meters.
As of 6 a.m. on Monday (June 17), Angat’s water level is at 162.39 meters.
“As a result, Manila Water may need to make further operational adjustments affecting water supply for our customers,” the Manila Water said.
The Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa) has declared the start of the rainy season last week.
But even with the recent rains, according to Manila Water, the water level at the Angat Dam remains low.
If this continues, the company said it may be forced to implement contingency measures to manage the limited water supply.
“Maaari po kaming magpatupad muli ng mga ‘rotational water service interruptions’ sa buong East zone,” its advisory read.
The National Water Resources Board (NWRB) earlier announced it has reduced the allocation for Metro Manila from 48 cubic meters per second to 46 CBS for the month of June due to lower water levels at Angat Dam.
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