Province of Batangas · City of Tanauan

Climate and Disaster Risk Assessment

Annex to the Comprehensive Land Use Plan · 48 barangays · 1 of 7 hazards computed
Download full PDFFull assessment · 7 hazards · 48 barangays
Contains sample data. Hazard ratings, Population and sensitivity, Replacement costs, Critical facilities, Land use by barangay — these figures were generated to test the report and are not measurements of this city. Uploading the real dataset replaces them.
Risk assessment

Scores, and the working behind them

Exposure, sensitivity, adaptive capacity, likelihood — every column a reviewer checks

Every intermediate score, not just the total. A DHSUD reviewer checks the columns, and an assessment that cannot show its working gets sent back.

How exposure is estimated. Population and land-use exposure apply the barangay's susceptible AREA share to its population and its built-up area, because no source publishes where within a barangay people live. That is the standard simplification and the published CDRA makes it too, but it is an assumption rather than a measurement. Critical-facility exposure is the exception: those have coordinates, so it is a real point-in-polygon test.
Hazard layer
Altura Bata — not scoredAltura Matanda — not scoredAltura-South — not scoredAmbulong — Moderate riskBagbag — not scoredBagumbayan — not scoredBalele — not scoredBanadero — Moderate riskBanjo East — not scoredBanjo Laurel — not scoredBilog-bilog — not scoredBoot — not scoredCale — not scoredDarasa — not scoredGonzales — Moderate riskHidalgo — not scoredJanopol — not scoredJanopol Oriental — not scoredLaurel — not scoredLuyos — not scoredMabini — not scoredMalaking Pulo — not scoredMaria Paz — not scoredMaugat — not scoredMontaña — not scoredNatatas — not scoredPagaspas — not scoredPantay Bata — not scoredPantay Matanda — not scoredPoblacion Barangay 1 — not scoredPoblacion Barangay 2 — not scoredPoblacion Barangay 3 — not scoredPoblacion Barangay 4 — not scoredPoblacion Barangay 5 — not scoredPoblacion Barangay 6 — not scoredPoblacion Barangay 7 — not scoredSala — not scoredSambat — not scoredSan Jose — not scoredSantol — not scoredSantor — not scoredSulpoc — not scoredSuplang — not scoredTalaga — not scoredTinurik — not scoredTrapiche — not scoredUlango — not scoredWawa — Moderate risk
Very High — ProhibitedHigh — DiscretionaryModerate — ConditionalLow — PermittedNot scored
Liquefaction

The highest risk category reached in each barangay, per hazard.

Each barangay is shaded by the highest risk category found in it — not an average. A barangay with one exposure unit at very high risk is a very-high-risk barangay for planning purposes, and averaging that down would hide exactly what a land-use control exists to address.

Liquefaction

BarangayExposure unitExposureSensitivityACVulnLikelihoodSeverityRiskCategoryLand-use control
AmbulongPopulation0.0% 121.0% 430.7532.006.00ModerateConditional
AmbulongUrban Use Areas0.0% 19.9% 230.5031.504.50ModerateConditional
BanaderoPopulation0.0% 120.0% 430.7532.006.00ModerateConditional
BanaderoUrban Use Areas0.0% 111.0% 330.5031.504.50ModerateConditional
GonzalesPopulation0.0% 122.0% 430.7532.006.00ModerateConditional
GonzalesUrban Use Areas0.0% 17.0% 230.5031.504.50ModerateConditional
WawaPopulation0.0% 120.0% 430.7532.006.00ModerateConditional
WawaUrban Use Areas0.0% 112.1% 330.5031.504.50ModerateConditional

Critical facilities

The one exposure unit that is measured rather than estimated: each facility has coordinates, so this is a point-in-polygon test against the agency's own hazard geometry. A facility is either in the hazard zone or it is not — DHSUD scores that 4 or 1, with nothing in between.

No uploaded facility falls inside a mapped hazard zone. That is a real finding, not an absence of data — every facility was tested against every staged hazard layer.

How risk is scored

Severity of consequence

Vuln 1Vuln 2Vuln 3Vuln 4
Exposure 42.503.003.504.00
Exposure 32.002.503.003.50
Exposure 21.502.002.503.00
Exposure 11.001.502.002.50

Risk categories and land-use control

CategoryRisk scoreLand-use control
Very High-Risk Areas12 – 16Prohibited
High Risk Areas7 – 11.99Discretionary
Moderate Risk Areas3 – 6.99Conditional
Low Risk Areas1 – 2.99Permitted