Follow these tips from the Insurance Bureau of Canada regarding Ice Safety.
Use designated ice surfaces.
Measure ice thickness in several locations.
Avoid traveling on the ice at night or when it is snowing.
Never go onto ice alone.
Stay off river ice and avoid the narrows between lakes.
Wear a thermal protection buoyant suit or a lifejacket.
Take safety equipment with you.
Avoid alcohol.
Reference link - http://www.ibc.ca/nb/disaster/ice/ice-safety-tips