Guimaras is compact, hilly in the middle, and coastal almost everywhere. That shape decides which hazard layers matter at an exact address.
Guimaras is a small island province between Panay and Negros. Nowhere on it is far from the sea, the interior is rolling to hilly, and the rivers are short.
Small islands invite a particular mistake: assuming that because the place is manageable in size, the hazard picture is simple. The opposite is closer to the truth, because on a small island almost every address is a coastal address.
Jordan, Buenavista, Nueva Valencia, San Lorenzo, Sibunag: the population sits on or near the shore.
For any of those addresses, read two layers as one answer:
Guimaras sits inside the Visayan seas rather than on the open Pacific, which generally reduces exposure compared with the eastern seaboard. It does not remove it. The Guimaras Strait and the Panay Gulf both open to weather, and the surge maps exist for a reason.
The island's watercourses are short because there is not much distance between the high ground and the sea. Short catchments respond quickly: heavy rain becomes runoff in the channel within hours, not days.
That is flash flood behaviour rather than basin flooding. Screen flood susceptibility and the distance to the nearest mapped waterway together, and take the waterway distance seriously even for a channel that is dry most of the year.
One caution specific to small islands: community-mapped waterway data can be thin. If the report returns no nearby waterway and you can see a creek from the lot, believe the creek. The reasoning is in a layer came back blank on your report.
The middle of the island is higher and rolling, with genuinely steep sections. For an upland lot, read slope and mapped landslide susceptibility together, and look at what sits above the property.
Upland lots on a small island have a compensating advantage worth naming: they are out of the surge zone. The trade-off between coastal and elevated ground is the general question covered in lowland or hillside.
On a small island, fresh water is finite and the dry season is real. This is not a hazard layer, and it belongs in your due diligence anyway.
Ask where the water comes from, whether it is a district supply or a private well, what happens in the dry months, and whether the well ever goes brackish. Saltwater intrusion into coastal wells is a slow problem that is invisible on a viewing day and expensive to live with.
On an island province, your access route includes a sea crossing that is suspended in bad weather. That is not a hazard rating, it is a practical fact that shapes what living there is like when a storm is near.
Ask how often crossings are cancelled, how long the longest suspension has been, and what people do about medical emergencies during one. The answers are usually matter of fact and they tell you a lot about the property.
A hazard screening reads public national datasets at a point and reports mapped susceptibility, elevation, slope, and distances. On small islands some community-mapped layers are thinner than on the mainland, which is a reason to weight local knowledge more heavily, not less. Anything you intend to build still needs a licensed geotechnical and structural engineer.
CheckHazard does not replace a professional geotechnical or engineering survey.