New maps help prepare for climate risks in Southwest Finland

Herttuankulman kerrostaloja. Kuvaaja Heikki Räisänen.

The data compiled in Lounaistieto’s map service supports the work of local authorities and businesses by enabling them to take into account risks relating to flooding, heat, soil and groundwater in their planning, construction and contingency preparations.

New map-based information on climate risks in Southwest Finland has been published on the Lounaistieto map service . The maps illustrate risks related to temperature, soil and water, such as the urban heat island effect, cold spells, soil bearing capacity, flooding and the vulnerability of commercial premises. This information can be used, for example, to assess heating and cooling requirements, in construction, in planning security of supply and in identifying risk areas.

Sea floods, heat and soil conditions are highlighted on the risk maps

The climate risk maps show that, in the Turku region, sea floods pose the greatest flood risk, and their extent varies depending on the climate emission scenarios. In the simulations, stormwater flooding remains localised, but extensive impervious surfaces and heavy rainfall can increase the risk in certain areas. The most effective way to prevent stormwater run-off is to increase the amount of permeable surfaces.

– The risks associated with high temperatures are particularly pronounced in densely built-up city centres and large suburbs with large elderly populations or low income levels. The risks relate particularly to health, notes the project manager Hilja Kurkinen.

Risks associated with soil erosion and acidic sulphate soils are particularly pronounced in steep-sided, clayey river valleys. Groundwater risks are concentrated near old landfill sites and industrial areas, and the risk of soil subsidence is heightened, particularly in clay-dominated areas.

The publication of these maps forms part of the Climate-Resilient Investment Projects, which are carried out by Turku University of Applied Sciences and Turku University of Applied Sciences (IKI) project, which aims to support local authorities and businesses in Southwest Finland in managing climate risks. The IKI project is co-funded by the European Regional Development Fund.

This translation was produced with AI and reviewed by a human.