Landslide Risk

Landslide susceptibility tells you whether the ground around a property can slide, slump, or collapse under heavy rain. NOAH maps this nationwide in three levels, the same Low / Medium / High scale used for flood.

It is not only steep lots. A flat lot sitting below an unstable slope can be buried by what comes down from above. We check the susceptibility level at your point and read it alongside the slope number from the elevation layer.

Tropical Storm Sendong (2011) sent rain-soaked hillsides down onto homes in Northern Mindanao and killed more than a thousand people. Rain-triggered landslides remain one of the deadliest hazards in the country, year after year.

Many fast-growing subdivisions in the Philippines are carved into hillsides because flat land is scarce and expensive. The cut-and-fill that makes those lots buildable can also make them fragile. This layer is the early warning before you commit.

We test your point against the NOAH landslide-hazard polygons and return the worst susceptibility level present.

That polygon level is then read together with the measured slope and elevation, so a "Moderate" rating on a steep, high lot reads differently from the same rating on flat ground.

Landslide susceptibility comes from the UP NOAH Center / DOST nationwide dataset, derived from terrain, geology, and rainfall modelling.

Because susceptibility and slope reinforce each other, this layer is always read next to Elevation & Slope rather than on its own.