Ice thickness on reservoirs of the Republic of Tatarstan on December 21, 2021 according to the SISV Center of the Main Directorate of the Ministry of Emergency Situations of Russia in the Republic of Tatarstan. Attention! On the fairway of large rivers, the process of ice formation has not yet been completed, numerous cracks are observed. Be careful when going out to the pond. Move on the ice during daylight hours. We remind you that ice thickness of more than 7 cm is safe for humans.