It represents the time of avenue or arrival of the floods from sectorizations of the fluvial courses.

It represents the areas of avalanche observation by the population, identified from a population survey.

It indicates whether or not the municipality exceeds any of the thresholds established as a criterion to determine whether it is obliged or recommended to draw up the Municipal Action Plan for seismic emergencies. In order to establish the obligation to draw up the action manual for municipal seismic emergencies, there are two criteria: exceeding the intensity threshold in this case greater than or equal to VII, or for exceeding reference damage, in this case case more than 50 uninhabitable buildings or more than 10% of the total uninhabitable buildings in the municipality. Municipalities that appear in white mean that they do not exceed these thresholds.

Seismic intensity (MSK scale) that can be expected for a return period of 500 years

The ZIF (defenceless zone) is defined as the minimum security zone necessary to guarantee the viability of self-protection of vulnerable elements in the context of an accident in the transport of dangerous goods. The extension of this zone is conditioned by the necessary response time and the intensity of the effects of foreseeable accidents. The distances of the ZIF for the scenarios of long-range toxic cloud, short-range toxic cloud, serious explosion, flammable cloud and puddle fire are established in "The Technical Instruction of the DGPC regarding the preparation of reports on the conditions minimum requirements that new urban developments must comply with to be located within the identified chemical risk zones due to the transport of dangerous goods by road and rail" (ITMMPP).

Delimitation of the perimeter of industrial facilities included in Plaseqcat which handle dangerous substances.

Location of alarms to warn the population if there is a chemical risk in the case of an accident in premises nearby.

Subzones within zone I or zone of urgent protection measures. It corresponds to the geographic area affected by the passage of the radioactive cloud within a 10 km radius circle around the nuclear power plant (with the nuclear power plant at its center). In the area of ​​zone I, the sector of preferential attention and the zone of preferential attention are also defined.

This represents the alert coverage of sirens installed on dams. Some approximations have been made by generating buffers with a predefined coverage radius based on the technical specifications of the sirens, while others have employed acoustic propagation models that incorporate factors such as attenuation, sound dispersion, and the influence of topography.

Identification of the municipalities through which the ethylene pipeline passes.