In Ukraine, during several winter months, lakes, rivers and ponds are covered with ice and snow. At this time, skiing and skating on frozen reservoirs, as well as ice fishing, are very popular. Along with measures to protect against frost and snowfall, we consider issues of preparation for being on ice and measures to help, including for oneself during an accident on ice. Ice characteristics The thickness and strength of the ice cover can be judged by its color: Blue is the strongest. White - the strength is half as strong. Gray – indicates the presence of water.