The results of economic assessment of debris flow risk in terms of the annual damage probability for municipalities are presented. Calculations of risk account for geophysical parameters of debris flows, such as susceptibility of the territory to debris flows, their frequency and duration of debris flow hazard period, as well as socio-economic characteristics of municipalities based on data from the Russian Federal State Statistics Service. It was found that the highest calculated values of debris flows risk (direct and total) are typical of the Republic of Buryatia and the Irkutsk region. The maximum values of total debris flows risk at the municipal level correspond to the Bodaibo and Slyudyansk (Irkutsk Region) and Tunkinsk and Kabansk (Republic of Buryatia) municipalities. The highest vulnerability to debris flows was found for Nizhneudinsk, Slyudyansky (Irkutsk Region), Zakamensk, Kurumkansk, Muysk, Okinsk, and Tunkinsk municipalities of the Siberian Federal District, where the debris flows risk amounts to 1 to 2% of the municipal gross production.
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