Ambuklao, Binga release water-A A +A
Wednesday, August 21, 2013
LA TRINIDAD, Benguet -- Twin dams in the province released water the past days due to heavy rainfall.
On Tuesday, twin dams had four gates open with Ambuklao having two gates open at 0.5 meter each for total of 1 meter. Binga, also two gates open, one gate open at 1 meter and another gate open at 0.5 meter for total 1.5 meter.
Water levels at Ambuklao is at 749.90 meters above sea level (masl) lower than its designated normal high water level of 752 masl, with 1 meter opening of spillway gate.
Binga is at 571 masl, lower than its designated normal high water level of 575 masl, with 1.5 meter opening.
Opening of spillway gates is aimed to let excess water pass as inflow and to make sure water levels in Ambuklao and Binga do not exceed normal high water level.
Water levels for Binga dam should reach 575 elevations and an inflow of 200 cubic meters per second (cms) for Ambuklao dam for the NPC to release water during emergencies.
In the past, an agreement has been forged with the National Power Corporation and SN Aboitiz Power (SNAP) Benguet on maintenance and rudiments of the flood forecasting manual used during emergencies.
The NPC remains to be the sole body to order the release of water from both Binga and Ambuklao dams during emergencies while SNAPB calls the shots during normal operations.
The release of water during emergency situations relies on thresholds based from rainfall and inflow among others.
SNAP vice president for corporate communications Mike Hosillos said dam operations have been turned over to NPC since the typhoon has entered the country.
Magat dam, which is also operated by SNAP is using the improved Flood Forecasting Warning Systems.
The system is aimed at reducing loss of lives and damages to properties due to floods in downstream communities.
Published in the Sun.Star Baguio newspaper on August 22, 2013.