Florianópolis has almost 54 hectares at risk of landslides, an area equivalent to 14 Parques da Luz, with 56% at a very high level, while another 28 hectares of the capital are already vulnerable to floods, inundations, and flash floods, a survey indicates.

Written by Carla Teles

Published on 29/04/2026 at 15:37

Updated on 29/04/2026 at 15:38

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Florianópolis appears with dozens of hectares at risk of landslides, floods, inundations, and flash floods, concentrates critical points in neighborhoods such as José Mendes and João Paulo, and raises an alert for urgent solutions for urban adaptation and containment of climate risks.

Florianópolis has almost 54 hectares of areas at risk of landslides, an area equivalent to 14 times the size of Parque da Luz, according to a survey by the Natureza ON platform. The study also identified more than 28 hectares of the Santa Catarina capital subject to floods, inundations, and flash floods, which amplifies the alert signal about the city’s urban vulnerability in the face of extreme climate events.

The data draws attention due to the size of the exposed area and the degree of criticality pointed out in the analysis. Of the total of 53.88 hectares with a probability of landslides in Florianópolis, 56% are classified as very high risk, 39% as high, and 5% as medium. The survey also shows that the José Mendes neighborhood appears as the most affected by landslide risk, while João Paulo emerges among the points with the most risk foci for floods, inundations, and flash floods.

What the survey reveals about risk areas in Florianópolis

The analysis shows that Florianópolis faces two important fronts of vulnerability. The first involves landslides, which affect almost 54 hectares of the city. The second brings together more than 28 hectares susceptible to events such as floods, inundations, and flash floods.

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The numbers that explain the size of the problem

Florianópolis: risk of landslides, floods, and inundations advance over dozens of hectares and raise an alert for vulnerable areas. — Image: Natureza ON/Reproduction

The 53.88 hectares with a probability of landslides represent about 4.5% of Florianópolis’ continental territory. When this dimension is compared to Parque da Luz, the result becomes more visual and impactful: the vulnerable area is equivalent to 14 parks of the same size.

The risk classification also helps to understand the severity of the scenario. More than half of the mapped area, 56%, is at a very high level. Another 39% appear as high risk, while 5% were classified as medium risk. Furthermore, the survey points to more than 28 hectares susceptible to floods, inundations, and flash floods in the capital.

Which neighborhoods appear among the most affected points

The study points to José Mendes as the neighborhood most affected by landslide risk in Florianópolis. This data highlights a specific area of the city within a broader vulnerability map, helping to locate where the problem is most intense.

In the case of water-related events, such as floods, inundations, and flash floods, the analysis identified João Paulo as one of the points with the most risk foci. This shows that Florianópolis faces different threats in distinct regions, with impacts that require a more precise territorial reading.

What solutions are pointed out to reduce the risks

Among the recommended strategies to reduce impacts, biologist Juliana Baladelli Ribeiro, project manager at Fundação Grupo Boticário, highlights the implementation of rainwater lagoons and retention basins. These structures serve to temporarily store rainwater to reduce the volume discharged at once.

According to the specialist, these solutions can receive, store, and slowly release water, reducing flow peaks, floods, and also improving water quality. In a city like Florianópolis, where the survey points to areas vulnerable to different types of disaster, this type of measure appears as a practical response to reduce pressure on the urban territory.

What can help Florianópolis become more resilient

In addition to structures focused on rainwater management, the study points to other measures to make Florianópolis more resilient. These include **slope restoration**, **urban afforestation**, **rain gardens**, **ecological corridors**, **linear parks**, and **expansion of multifunctional green areas**.

In the specific case of landslides, the main recommendation is the **vegetal recovery of slopes** associated with **geotechnical techniques**. The explanation is that native vegetation, along with safe interventions in the soil and rocks, can help stabilize the terrain, reduce landslides, and regulate the flow of rainwater.

Why natural cover is still an important asset

Despite the mapped risks, Florianópolis still preserves significant natural cover. According to platform data, **34% of the territory** is composed of forest formation and another **32%** by rivers, lakes, and the ocean. The urbanized area represents **22% of the municipality**.

This balance is treated as a strategic point because the preservation and expansion of vegetation cover not only serve to contain disasters. They also help maintain water security, quality of life, and the tourist attractiveness of Florianópolis, factors that directly influence the urban dynamics and image of the capital.

How the risk area analysis was carried out

The data was released using the free tool developed by **Fundação Grupo Boticário** in partnership with **MapBiomas** and with technology from **Google Cloud**. The platform’s proposal is to map areas vulnerable to extreme climatic events and indicate environmental solutions for urban adaptation.

The tool cross-references **maps**, **official statistics**, and **environmental data** to identify regions most susceptible to natural disasters and help both public managers and the population adopt preventive measures. With this, Florianópolis now has a more detailed picture of the areas that require greater attention.

What this means for the city in practice

In practice, the survey reinforces that Florianópolis needs to view climate adaptation as a concrete urban necessity. The described scenario involves not only environmental risk but also direct impacts on housing, mobility, safety, and land use planning.

The assessment presented by the specialist is that facing this new context requires going beyond conventional engineering works. For Florianópolis, this means combining infrastructure, nature-based solutions, and environmental preservation to reduce damage, protect vulnerable areas, and keep the city safer for residents and visitors.

Do you think Florianópolis is prepared to face such extensive areas at risk of landslides, floods, and flash floods?

Florianópolis has almost 54 hectares at risk of landslides, an area equivalent to 14 Parques da Luz, with 56% at a very high level, while another 28 hectares of the capital are already vulnerable to floods, inundations, and flash floods, a survey indicates.

Florianópolis appears with dozens of hectares at risk of landslides, floods, inundations, and flash floods, concentrates critical points in neighborhoods such as José Mendes and João Paulo, and raises an alert for urgent solutions for urban adaptation and containment of climate risks.

What the survey reveals about risk areas in Florianópolis

The numbers that explain the size of the problem

Which neighborhoods appear among the most affected points

What solutions are pointed out to reduce the risks

What can help Florianópolis become more resilient

Why natural cover is still an important asset

How the risk area analysis was carried out

What this means for the city in practice

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Florianópolis has almost 54 hectares at risk of landslides, an area equivalent to 14 Parques da Luz, with 56% at a very high level, while another 28 hectares of the capital are already vulnerable to floods, inundations, and flash floods, a survey indicates.

Florianópolis appears with dozens of hectares at risk of landslides, floods, inundations, and flash floods, concentrates critical points in neighborhoods such as José Mendes and João Paulo, and raises an alert for urgent solutions for urban adaptation and containment of climate risks.

What the survey reveals about risk areas in Florianópolis

The numbers that explain the size of the problem

Which neighborhoods appear among the most affected points

What solutions are pointed out to reduce the risks

What can help Florianópolis become more resilient

Why natural cover is still an important asset

How the risk area analysis was carried out

What this means for the city in practice

Gaddafi built the world’s largest artificial river under the Sahara — it’s 4,000 km of giant pipes that pump 40,000-year-old fossil water to entire cities in Libya.

The Soviet Union spent 22 years drilling into the Earth’s crust and reached a depth of 12,262 meters — they found water where it was thought impossible, hydrogen bubbling from the rock, granite that is 2.7 billion years old, and temperatures of 180 degrees that melted the drill bits.

Discovery in Africa scares even scientists: a study published on April 23 reveals that the crust in Turkana has become so thin that it could pave the way for the continent’s division and the emergence of an ocean in the future, in a gigantic geological transformation.

A German architect built a cylindrical house in 1994 that rotates to follow the sun throughout the day, generates 5 times more energy than it consumes, and was the world’s first energy-positive house.

Two African countries will inaugurate in 4 days an 825-meter bridge suspended 90 meters high over a reservoir — it is the largest of three bridges of a megaproject that will supply millions of people.

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