The indicator provides information about the landslide number and distribution in Italy. The recorded landslides exceed 635,000 (reference period 1116-2024) and affect an area of 25,004 km², accounting for 8.3% of the national territory.

The indicator provides information about the major landslide events caused fatalities, injuries, evacuations, damage to buildings, cultural heritage, and primary linear communication infrastructure or service networks in the national territory in the past year. The major landslide events occurred in 2023 were 192, with 11 deaths, 24 injuries, and damage mainly to the road network and buildings.

The monitoring of hydrogeological risk mitigation projects funded from 1999 to December 31, 2023, by various administrations across the national territory is carried out by ISPRA through the ReNDiS platform (the Italian Repository of Hydogeological Mitigation measures). A total of 25,539 projects are recorded in ReNDiS, with a total funding amount of €19,207 million. Of these, the projects under the jurisdiction of the Ministry of the Environment and Energy Security (MASE) account for just over 26% (6,750) of the total, corresponding to approximately 41% (€7,819 million) of the total resources allocated by the other public funding administrations listed in ReNDiS. These include the Ministry of the Interior, the Civil Protection Department, the Casa Italia Department of the Presidency of the Council of Ministers, the Ministry of Agriculture, Food Sovereignty and Forests (MASAF) and the Calabria Region.

Specifically, projects under the jurisdiction of the Ministry of the Interior, the Civil Protection Department, the Casa Italia Department, MASAF and the Calabria Region represent over 73.5% (18,789) of the total number of projects, with funding exceeding 59% (€19,207 million).

Regarding the implementation status of all funded projects, 8,813 (approximately 34%) have been completed, 12% (2,951 projects) are under execution, 19% (4,836 projects) are in the design phase, while nearly 34% (8,703 projects) have yet to be started or have no reported data. The indicator also provides data on the regional distribution of projects and their classification based on the type of hydrogeological failure. Additionally, it presents data on funding requests submitted by Regions/Autonomous Provinces to MASE and the Casa Italia Department for the implementation of new hydrogeological risk mitigation projects, totaling 1,542 requests for a total project funding amount of approximately €4,440 million.

The indicator provides information regarding cultural heritage exposed to landslide and flood risk along the national territory. There are 40,256 cultural heritage sites at landslide risk, of which 13,243 are in areas with high hazard P3 and very high hazard P4. There are 35,979 cultural heritage sites at risk of flooding in the medium hazard scenario (return periods between 100 and 200 years), and up to 53,844 in the low hazard scenario, which is the maximum expected scenario.

The indicator provides information on the landslide hazard zones of the River Basin Plans (PAI) at the national level. The total area in Italy affected by landslide hazard and attention zones in PAI is 60,481 km² (20% of the national territory), of which 26,385 km² (8.7%) subject to the most restrictive land use constraints, with high P3 and very high P4 hazard. 

The indicator provides an estimate of the population exposed to landslide risk (personal damage risk: deaths, missing, injuries, and evacuations) on a national, regional, provincial, and municipal basis. In Italy, the population at landslide risk residing in areas with high and very high landslide hazard (P3+P4) amounts to 1,303,666 inhabitants, equal to 2.2% of the total population.