Girona · 34.491 inhabitants · 2.619 buildings analysed one by one

SaltClimate risk in its neighbourhoods, streets and rivers, today and in 2050

We have scored the climate risk of the 2.619 buildings in Salt using Cadastre data, satellite imagery and climate projections, and added it up by area, street and watercourse. The clearest change comes at night: from 8 to 41 tropical nights a year by 2050.

8→41tropical nights a year in a typical building, today and by 2050
38%of homes at high or very high heat risk by 2050
339homes in the official flood zone (500 years)
At a glance

Where the risk lies by 2050

LowMediumHighVery highRivers and streams

Level of the highest hazard in each 250 m area by 2050: flooding, heat, wildfire, wind or ground movement.

Tropical nights a year in a typical building

Salt compared with Spain

  • Tropical nights a year, 2050: 53 nights
    higher than 80 % of municipalities
  • Average summer maximum, 2050: 33,1 °C
    higher than 60 % of municipalities
  • Flood-prone area (100-year): 17,4%
    higher than 95 % of municipalities
  • Area burnt 2016-2026: 0,0%
    lower than 64 % of municipalities
  • Water stress 2050 (0-5): 4,1
    lower than 62 % of municipalities

Position among the 8.217 municipalities: further right means more risk. These are figures for the municipality as a whole, the same for everyone; they may differ from those for the typical building. Compare with others →

What stands out

What we found in Salt

It comes from matching each building with its neighbourhood, its street, the nearest watercourse and its surroundings.

1

339 homes in a flood zone

339 homes

They are in the area that can flood once every 500 years according to the official maps (SNCZI); 31 of them are in the 100-year area.

According to the Ministry’s studies, this is an annual probability of 0,2 % (500 years) or 1 % (100 years), not “once every 500 years”: it can happen two years in a row. Small gullies are not always mapped.

2

From 8 to 41 tropical nights a year

8→41 nights

In a typical building in Salt, nights when the temperature stays at or above 20 °C would rise from 8 a year (1991-2020) to about 41 by 2050. For this reason, 59 % of homes would be at a high or very high level.

Median of the buildings. Intermediate-to-high emissions scenario (SSP3-7.0).

3

64 in every 100 buildings were built before 1980

64 %

They were built before the first thermal insulation standard (1979). With 41 tropical nights a year by 2050, they will hold the most heat at night and have the most to gain from a retrofit.

Year of construction from the Cadastre.

4

3 schools in heat islands

3 of 18

Schools whose surroundings are at least 1 °C hotter than the municipal median in summer. They are the first candidates for shade and tree-lined playgrounds.

Ground surface temperature (Landsat) around the building closest to the OpenStreetMap point.

Six hazards

How many homes are at high risk, today and in 2050

The 11.490 homes in Salt by the level of their building. Tap a hazard to see it on the map.

LowMediumHighVery high
What can be done

For the town council and for residents

For the town council and its technical staff

  • Climate shelters, and late-afternoon and evening opening hours at libraries and community centres in the areas with the most tropical nights.
  • Shade and trees in the playgrounds of the 3 schools with the hottest surroundings.
  • Review with the river basin authority the watercourses with no official mapping that run next to homes, and keep them clear.
  • Emergency self-protection plans in the schools, care homes and health centres that are in a flood zone.
  • Download the tables by area, neighbourhood, street and watercourse (Data tab) to cross-check them with urban planning.

For residents

  • Air your home in the early hours, shade west-facing walls from the sun and ask about grants to insulate the roof.
  • If you live on a ground floor or have a garage next to a watercourse, have a plan: where to go upstairs, what to switch off and how to hear about warnings.
  • Look up your building: the free report gives its level for each hazard, and the Climate Note gives the full detail.

Look up your building