On reservoirs of the Republic of Tatarstan in places with a weak current, in bays and lakes the ice structure began form. Ice thickness is still very small and poses a threat. Ice with a thickness of not less than 7 cm is considered safe. When ice thickness is less than 7 cm there may be warning or imposition of an administrative fine on citizens from 1 500 to 2 000 rubles. The link below presents the table of ice thickness on reservoirs of the republic.
http://mchs.tatarstan.ru/rus/index.htm/news/1324928.htm