Weekly Safety Share #77 - Ice Safety
As the winter season settles in and our lakes freeze over, many of us look forward to spending time outdoors—whether for recreation, travel, or work. For our teams, this time of year also marks the beginning of ice road construction. Our winter road professionals take every precaution, using specialized equipment such as the Ice Profiler and following detailed safe-work plans to ensure stable ice routes for our northern communities.
However, safe winter travel is a shared responsibility. Whether you are out fishing, travelling by snowmobile, or simply enjoying the crisp winter air, recognizing the risks and preparing properly can prevent injuries, emergencies, and tragic outcomes. Below are some important reminders to help keep all recreational users safe as they venture onto frozen lakes.
Understanding Ice Thickness
Ice thickness is the most critical factor in determining safety on frozen lakes. The “safe” thickness varies depending on the activity, type of ice, and number of people or weight involved.
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6 inches (15 cm) – Minimum recommended for a single person on foot.
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10 inches (25 cm) or more – Recommended for snowmobiles or ATVs.
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12–15 inches (30–38 cm) – Required for light trucks.
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Greater than 20 inches (50+ cm) – Required for heavier vehicles.
While six inches is widely accepted as the baseline, it is important to remember that ice thickness is never uniform. Snow cover, currents, underwater springs, vegetation, and shifting temperatures can all create weak spots—even when surrounding areas appear solid.
The City of Yellowknife Fire Division strongly recommends staying off any ice until it reaches at least 6 inches thick. Before venturing out, always check the latest ice conditions and measure thickness in several locations if possible.
Key Safety Tips for Winter Ice Travel
Whether you’re riding, walking, or fishing, follow these essential safety practices:
1. Be Aware of Your Surroundings
Watch for cracks, slush, pressure ridges, areas of running water, and unusual color changes in the ice. Clear ice is strongest; cloudy or white ice can be significantly weaker.
2. Travel With a Partner
Never travel alone. A partner can call for help, assist in a rescue, or provide support if you fall through the ice.
3. Be Prepared for Emergencies
Carry:
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A full set of dry clothing
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Waterproof matches or a fire-starting kit
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Ice picks or claws
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A rope or throw-bag
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A basic first-aid kit
Preparation can make a life-saving difference in cold-water emergencies.
4. Spread Out When Travelling in Groups
If snowmobiling or traveling with others, spread out when stopped. This distributes weight more evenly and reduces stress on the ice sheet.
5. Carry Reliable Communication Devices
A cellphone in a waterproof case, a satellite communicator, or a radio can help you call for assistance quickly if you break through the ice or become stranded.
6. Avoid Rivers and Moving Water
Rivers, creeks, and narrows should be avoided. Even in sustained cold temperatures, flowing water prevents strong ice formation, creating dangerous weak spots.
7. Always Share Your Travel Plan
Let someone know:
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Your destination
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Your expected route
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Your departure and return time
If something happens, this information helps search and rescue teams act quickly.
Your Safety Matters
Enjoying the outdoors is a treasured part of northern life, but it comes with responsibility. By respecting ice conditions, preparing for emergencies, and following safe travel practices, we can all help ensure that winter remains an enjoyable and safe season for everyone.
If you are ever unsure about conditions or safety procedures, don’t hesitate to ask experienced personnel or local authorities for guidance. Stay alert, stay warm, and stay safe on the ice this winter.
A guide to safe ice thicknesses
Always remember If you are unsure of the ice thickness, drill a test hole or stay off the ice.
Please call 9-1-1 if you see that someone has fallen through the ice or is in distress.
Enjoy, stay dry, and be Safe.