Earthquake Impacts in Davao del Sur and Davao del Norte: MGB XI Updates

11-12 earthquake impacts in davao del sur and davao del norte mgb xi updates

Landslides, tension cracks, slumps, rocks rolling downslopes were among the findings of the on-going monitoring and assessment of the areas affected by earthquake that consecutively occurred in October 16, 29 and 30, 2019 in Mindanao.


In So. Marawer, Purok Tagumpay 2, Brgy. Kapatagan, an approximately 250 meter-length tension cracks was observed. It has a crack opening ranging from 1 inch- 5 inches and with a maximum vertical displacement of 5 inches. It was accordingly caused by 6.3 magnitude earthquake in October 16 and was aggravated during the 6.6 magnitude earthquake in October 29. It was recommended that the affected houses will be immediately relocated since the area is highly susceptible to landslide.

In Purok Talisay, Brgy. Kiagot, there were reported cases of rock rolling downslope. Loose cobble to boulder-sized volcanic rock fragments were observed along the slope. The MGB team recommended for conduct of further assessment and for the relocation or temporary evacuation of household directly situated in the area as it is highly susceptible to mass movement.

Series of tension cracks was also observed in So. Bandera, Brgy. Balabag. A slump was further noted with a maximum vertical displacement of 30 cm.

Another landslide was observed approximately 2 kilometers northeast of the Purok Centro. Adjacent to the landslide crown, series of tension cracks were also observed.

Several areas of Brgy. Goma were also affected. In So. Kiola, a tension crack with a vertical displacement reaching up to 45 cm was noted which imposes threat to the 2 houses that are adjacent to it. It was accordingly occurred in October 30 earthquake.

In Purok Alom, So. Nodila, a massive landslide was observed wherein possible debris flow may pose a threat to damming of Napan River.


As the LGU also prioritizes assessment of earthquake impacts in schools, the MGB team surveyed two (2) schools in Brgy. Palma Gil wherein structural cracks were observed. In Gatong Elementary School- Igang Extension, it was remarked for temporary termination of four (4) classrooms and for inspection of proper authorities.

In Gatong Elementary School, aside from the structural cracks on walls, gap between the wall of a classroom to the floor was also noted as well as a vertical displacement on the floor outside the classrooms in its old building. The MGB team recommended for immediate inspection and assessment by the appropriate authorities.

The MGB-XI’s above-mentioned update covers November 7-8, 2019 monitoring and assessment in close coordination with the Provincial Environment and Natural Resources Offices (PENROs), Local/Municipal Disaster Risk and Reduction and Management Offices (L/M DRRMO) and Philippine Institute of Volcanology and Seismology or PHIVOLCS.


Avian Migrants found haven in Davao Region

A large number of Little Egret (Egretta garzetta) sighted in Malalag mudflats.  Photo courtesy of DENR XI- Protected Area Management and Biodiversity Conservation Section (PAMCS) team.

Hundreds to thousands of migratory waterbirds were logged during the conduct of Asian Waterbird Census (AWC), a program that aims to monitor and record bird sightings across the globe. It was conducted by the Department of Environment and Natural Resources (DENR-XI) in the early weeks of January 2020, in Davao Region’s six (6) monitoring sites – Malalag mudflats in Davao del Sur, Bucana in Davao City, Banay-banay in Davao Oriental and in Panabo, Carmen and Tagum in Davao del Norte.

AWC is an annual event which takes place during the second and third weeks of January.

In Malalag, about a thousand of Little Egret (Egretta garzetta) were sighted, along with hundreds of Pied Stilts (Himantopus leucocephalus) and Whiskered Terns (Chlidonias hybrida). A small number of Great Knot (Calidris tenuirostris), an endangered species was also sighted.

Moreso in Carmen Coastal Wetland, a few of nearly threatened species such as Black-tailed Godwit (Limosa limosa) and Eurasian Curlew (Numenius arquata) were also seen. With them are some Whiskered Terns also flocking in the area. The latter species were also spotted in its neighboring Coastland Wetland in Panabo along with hundreds of Little Egret and Pied Stilts.

Meanwhile in Banay-bay, White-browed Crake (Porzana cinerea) and Wandering Whistling Duck (Dendrocygna javanica) were recorded, just a few compared to the thousands of Pied Stilts that landed in the area. In the same area, a few Philippine Ducks (Anas luzonica), the sole endemic species were also spotted flying overhead. Philippine Ducks is one of our very own families of birds which are unfortunately listed as vulnerable because of its small population.

As Philippines is one of the avian migrants’ flyways or routes in East Asia/Australasia, these avian migrants fly from their origin all the way to the lands of Davao Region to find a better habitat that will suit their need for breeding, feeding and raising their young. They are flying from vast distances including China, Japan, Siberia and other areas around the world that has winter season. These migrant birds travel beyond their country’s borders in search for warmer and safer refuge where they can also find sufficient food resources.

As a warm welcome to these visitors, may we all refrain from touching or harming them. Just let them fly freely.


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