Simple download service (Atom) of the dataset: Atlas of cavities in the department of Maine-et-Loire(49)
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By Law No. 87-565 of 22 July 1987 on the prevention of major risks, reinforced by the Risk Act No. 2003-699 of 30 July 2003, the State must collect all information concerning the existence of risk areas and make it known to local authorities and citizens. Municipalities must take this information into account in their development projects and in land use.
From 2010 to 2015, the DDT mandated CEREMA to conduct a census of underground cavities on the department. This information was collected in three cavity atlases (Saumurois, Sud-Loire, Nord-Loire). In the areas at stake, a qualification of hazards has also been carried out.
It should be noted that these data are by no means exhaustive. The state of knowledge varies widely among municipalities. While a number of cavities can be identified, others remain inaccessible and unknown.
