Gravitational phenomena, like shallow landslides and debris flows, are very common in Italy due to the orographic and geological features of the territory, two mountain chains go all across the nation indeed (Alps and Apennines). It has already been demonstrated that it is impossible to avoid them all occurring; that is why prevention measures and studies are needed to decrease the damages and victims that such phenomena could cause. Exploiting the database of the Piemonte Region and Regional Agency of Environmental Protection of Piemonte (ARPA Piemonte), an attempt has been made to investigate the variations of soils affected by wildfires. Numerous studies have demonstrated that hydrological characteristics’ variations due to wildfire have to be examined.