THE Department of Science and Technology (DOST)-Philippine Institute of Volcanology and Seismology (Phivolcs) listed a total of 60 barangays in Davao City that transect in the Central Davao Fault System, which is comprised of five segments.
The Central Davao Fault System has five segments,, including the Tamugan Fault with 25 kilometers (kms) length and can produce 6.7-magnitude earthquake; Lacson Fault with 33 kms and can trigger a 6.8-magnitude quake; 18-kilometer Dacudao Fault with 6.5-magnitude quake; Pangyan-Biao with 33 kms and 6.8-magnitude quake; and the 12-kilometer New Carmen Fault that may cause a 6.3-magnitude earthquake.
The barangays that transect in the Tamugan Fault are Tamugan, Gumalang, Malagos, Baguio, Cawayan, Subasta, Tagakpan, Manambulan, Mulig, Camansi, Alambre, Tagluno, Lizada, Sirawan and Binugao.
In Lacson Fault are barangays Lacson, Malagos, Calinan, Wangan, Subasta, Balengaeng, Los Amigos, Angalan, Tugbok, Mintal, Bago Oshiro, Banka Heights, Baliok and Lubogan, while in Dacudao Fault are Lamanan, Lacson, Dacudao, Calinan, Talomo River, Riverside, Los Amigos, Ula, Tugbok, Mintal, Sto. Niño, Catalunan Grande, Catalunan Pequeño, and Talomo.
In Pangyan-Baiao Escuela Fault are barangays Lumiad, Paquibato, Pañalum, Malabog, Sumimao, Dominga, Dacudao, Pangyan, Talandang, Biao Joaquin, Biao Escuela, Biao Guianga, and Matina Biao.
In New Carmen Fault are barangays New Valencia, New Carmen, Matina Biao and Langub.
But Phivolcs director and DOST Undersecretary Renato Solidum Jr. said that removal of residents on any fault line would be up to the City Government of Davao and the residents.
The Phivolcs is currently surveying the fault lines, said Solidum.
“Removal of houses is a very delicate subject and it should be discussed among the residents and the locals. What's important is they are informed that the fault transects their building so they have better information, therefore, they need better preparedness,” Solidum said.
Last Monday, June 24, Phivolcs personnel, together with other agencies, walked the fault line in Bago Oshiro and Mintal. They also placed markers to determine where exactly these faults are located.
“First step is to inform where the faults are, whether the building is transected, then the decision of the owner whether to stay or move depending on them but perhaps, the local government can facilitate and give assistance to those need to do something to be better prepared or if they want to move,” said Solidum.
For his part, Mintal barangay captain Rey Amador Bargamento said they will have yet to determine the number of residents whose houses sit on top of the fault lines. They are also intensifying their awareness campaign about these fault lines.
The Davao City Disaster Risk Reduction Management Office assured that they are on guard and ready when disaster strikes the city.