Can municipalities measure climate adaptation effectiveness?

I concluded by saying that living down here teaches us one crucial lesson: we desperately need total clarity on what is actually being done to manage climate change and whether any of it is working.

This month, I want to take a hard look at whether our local municipalities actually know the answers to those two questions. Or, to use a wonderfully descriptive Portuguese idiom, whether they are all currently “navigating in the mayonnaise” — cluelessly drifting out at sea while the tide changes beneath them.

When local governments across the Algarve announce their latest climate adaptation plans, the public relations machine follows a highly predictable, self-congratulatory pattern. They brag about the multi-million-euro budgets allocated for a massive new infrastructure project, list the metric tonnes of heavy concrete poured for a sea wall, or proudly tally up the sheer volume of pages bound within a newly minted municipal strategy document.

But if you dare to step into the room, look past the glossy presentations, and ask one fundamental question — is local community vulnerability actually decreasing because of this massive capital expenditure?— the room instantly goes dead silent.

The uncomfortable reality is that our municipal governance frameworks suffer from a deep understanding gap. They simply do not understand measurement: how it should be done, what indicators matter, or what ultimate purpose it serves. We constantly confuse high-volume administrative busywork with systemic territorial resilience.

Traditional public administration focuses entirely on output-tracking. In simple terms, this means they excel at counting how many bricks were laid or how many checks were signed. True climate adaptation, however, requires impact verification. It requires an independent audit of the actual, long-term reduction in risk to our communities, our homes, and our shared natural resources over multi-decadal horizons. Signing a contract to build something is an output; proving that the project successfully shielded a neighbourhood from a climate disaster is an impact.

To bridge this chasm, local Câmaras Municipais need to move past their absolute reliance on Planos Diretores Municipais (PDMs). These static master plans are typically reviewed only once every few decades, and they naively assume the territory will stay frozen exactly as it was the day the maps were drawn. This bureaucratic approach treats the environment as an unchanging backdrop rather than a dynamic, living system.

Instead, our local authorities must pivot to an operational Monitoring, Reporting, and Verification (MRV) framework. This architecture needs to be anchored in international evaluation standards — specifically the OECD DAC criteria — and built into an adapted ESG (Environmental, Social, Governance) matrix where viable long-term adaptation pathways are accurately modelled. We must evaluate municipal projects not on their short-term political relevance or bureaucratic efficiency, but on their long-term structural coherence and actual systemic impact.

This requires an architecture of explicit, localised Key Performance Indicators (KPIs) that look far beyond mere concrete, asphalt, and civil engineering. My own professional background bridges geology, environmental management, sedimentology, cartography, biogeochemistry, and organic agriculture. Because of that lens, I do not view our territory as a collection of static assets to be paved over. I look at it as a complex, interconnected matrix of chemical cycles, soil ecosystems, fluid water pathways, and interdependent ecosystems.

When a municipality brags about a climate project, a biogeochemical perspective forces us to look beneath the surface. A municipality’s adaptation success should never be measured by a completed paperwork milestone. It must be judged by audit-ready, empirical metrics. We should be tracking the volumetric efficiency of municipal water networks to stop rampant non-revenue water leaks.

Simultaneously, we must monitor subsurface ecological indicators that local councils routinely ignore — such as the depletion of organic soil matter, groundwater nitrate contamination from intensive agricultural runoff, and the widespread loss of vegetative biomass.

Last but not least, we need to integrate these ecological indicators with social and governance metrics to ensure that implemented actions do not trigger negative side effects on local populations.

These are not separate, isolated issues. They are deeply linked. When a landscape loses its organic soil structure and vegetative biomass, its natural infiltration capacity collapses. The soil can no longer act as a sponge. Therefore, the very next time a winter storm train hits the Algarve, the rainfall can’t penetrate the ground. It turns into a high-velocity sheet of surface runoff, causing flash floods in our towns and saturating fragile sub-surface clay layers that directly trigger catastrophic slope failures and landslides down the line.

Concrete sea walls and expensive pipelines are merely expensive band-aids if we continue to destroy the biogeochemical infrastructure that naturally regulates our environment.

In the exact same context, we cannot separate environmental resilience from human vulnerability. When a local family is struggling just to pay for basic food, rent, water, or electricity, they are forced into survival mode. Having to choose between these fundamental needs means that a family will simply not have the emotional or mental bandwidth to worry about the broader environment, animal welfare, or abstract concepts of social justice and equity — unless those issues directly affect their immediate survival.

True adaptation is a dynamic learning cycle, not a static engineering checklist. Empirical environmental data must possess the regulatory weight to legally compel decision-makers to adjust zoning laws, halt unsustainable land use, and freeze high-risk development lines before the environment forces the issue for them.

Until our municipalities treat adaptation as an auditable governance process rather than a convenient ribbon-cutting construction milestone, we will continue to spend millions of euros of public money to achieve completely unquantified results. If we want to stop ‘navigating in the mayonnaise’, we have to start measuring what actually matters beneath our feet.

Read Maria João Sacadura’s last month article: What living in the Algarve is teaching us about climate adaptation