Listen to Science

“Listen to the science.” It was the theme of Iloilo City’s first Multi-Hazard Scientific Conference on December 5, but for many in the well-attended hall at District 21 Hotel, it sounded less like a slogan and more like a warning bell.

The data presented by Dr. Jurgene Primavera and Dr. Rosa Perez were realistic but concerning assessments of our current definition of progress. The headline figure? Iloilo City is sinking at a rate of 9 millimeters per year.

This statistic, validated by the University of the Philippines Resilience Institute and data from the International Journal of Applied Earth Observation and Geoinformation, is happening now, specifically in our economic crown jewels: Mandurriao, La Paz, and Molo. Yet, as the ground sinks, the concrete pours. This glaring contradiction forces us to ask: Are we building our future, or are we literally burying it?

The most uncomfortable truth lies in the contrast between this geological reality and our infrastructure priorities. Take the Iloilo Sunset Boulevard. Praised for decongesting traffic and boosting connectivity between the city and Oton, the project carries a price tag of roughly PHP 2.260 billion. It is a feat of engineering, certainly. But it sits squarely in the zone identified by Dr. Primavera as sinking – an area projected to be underwater by 2050 due to the “double whammy” of ground subsidence and sea-level rise.

Who accounts for this? The Department of Public Works and Highways (DPWH) and city planners must answer a simple but terrifying question: Did the feasibility studies for these billions of pesos in infrastructure account for a 9mm annual drop in elevation? If not, we are witnessing negligence on a grand scale. Continuing to approve land reclamation projects in a city defined as a “subsidence zone” is akin to adding more passengers to a leaking boat.

The impact of ignoring this science extends beyond wet socks and flooded streets; it threatens Iloilo’s economic engine. Mandurriao is marketed as our modern business district – home to mixed-use developments that feature BPO buildings and high-rise condominiums. Yet, Dr. Perez flagged this very district as a “climate hotspot,” suffering from intense urban heat islands and vulnerable to the creeping water.

Investors and homeowners are pouring life savings into properties that science says are becoming unstable. If these areas face permanent inundation or unlivable heat indices within two decades, the property bubble won’t just burst; it will drown. The real-world consequence is a potential collapse in property values and insurance eligibility, leaving the public holding the bag for assets that cannot be saved.

So, what must be done? “Listening to the science” requires legislative teeth, not just forums. The City Government must immediately audit the 2021-2029 Comprehensive Land Use Plan (CLUP). If the current zoning ordinance does not explicitly factor in the 9mm/year subsidence rate, it is obsolete.

We need a moratorium on high-density coastal construction and reclamation until independent hydrological studies confirm the ground can support the load. Furthermore, the city must pivot its budget. Instead of endless funds for reactive relief goods, money should be diverted to “anticipatory” solutions: aggressive mangrove restoration to hold the soil and the re-engineering of drainage systems to cope with a future where sea level is higher and ground level is lower.

Ultimately, this story reveals a systemic flaw in how we view development. For decades, Philippine cities have equated “progress” with conquering nature – paving over wetlands and reclaiming the sea. Iloilo’s sinking crisis is the historical receipt for that arrogance.

We are moving past the era of “resilience” – which often just means enduring disaster – and into the era of necessary “anticipation.” The science is clear: the water is coming, and the ground is leaving. The only question left is whether our leaders will have the courage to stop building against nature before the map of Iloilo is redrawn for us.