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4 minute read Published on Aug 13, 2026 by BrokerLink Communications
You step out onto the frozen lake, drill your hole and then it hits you… Is the ice actually thick enough? Ice fishing is a classic Canadian winter activity that brings a lot of joy and the chance of dinner to many Canadians from coast to coast. But weather conditions can change quickly, and even thick-looking ice isn’t always automatically safe. This guide will walk you through what ice thickness is considered safe, how to test the thickness correctly, the gear that matters most, vehicle rules, self-rescue steps and what to check with your insurance broker before you head out to catch your next fish.
Winter conditions in Canada can be unpredictable. With freeze-thaw cycles, shorter days, blowing snow and slush, these factors can all weaken the ice within a couple of hours. According to the Canadian Coast Guard, it’s impossible to judge ice thickness and strength by its appearance alone.
A fall through the ice can lead to cold water shock, the inability to swim, hypothermia, carbon monoxide exposure within your ice fishing shack and even your vehicle breaking through the ice. By understanding these types of risks and how to prepare for them, you can make your ice fishing experience a lot safer and far more enjoyable.
Safe ice conditions mean clear, new (blue or black) ice that meets minimum thickness guidelines for your ice fishing activities. Just remember that even then, ice is never 100% safe. Safe ice is not:
Opaque or white ice.
Ice over moving water (rivers, inlets, outlets, aerators).
Grey or slushy ice.
Ice that is located near pressure ridges or cracks.
Key takeaway: Always assume that ice thickness can vary, even if it looks safe.
As we briefly mentioned, common ice hazard zones on lakes include:
River mouths, narrows, bridges, culverts, aerators and springs can weaken ice from below. Pressure ridges can form where two or more ice sheets collide, which is something you should avoid at all costs. If you’re going to a lake for the first time, speak with local anglers and residents for information on ice conditions.
Shorelines can heat up more quickly, especially around rocky edges and docks. Deep snow insulates the ice, which slows the thickening process. And of course, areas of the lake exposed to the sun will melt first. Make sure to inspect the shore and probe the area before entering or exiting.
Warm spells followed by refreezing can hide weak, thin ice layers under “thick” ice. Old holes and vehicle tracks can refreeze unevenly. Remember, even if yesterday had great conditions, today is never a guarantee.
How you dress for ice fishing is equally important:
Keeping your head, hands and feet dry and warm is essential. Just because the sun is out doesn’t mean it’s warm enough to fish in a t-shirt. Save the tanning for summer fishing. Aim to dress in layers:
Thermal base layer (moisture-wicking)
Insulating mid-layer.
Waterproof, windproof outer shell.
Protect your head, face and neck. Make sure your gloves are thick and waterproof For added ice fishing safety, consider wearing or carrying a personal flotation device under your jacket.
You should always have the following equipment on hand:
Spud bar: Test the ice ahead of you with every step and on new routes.
Ice picks: A grip to pull yourself out of the water if you fall through the ice.
Ice cleats: Prevent you from slipping on glare ice.
Throw rope and whistle: The rope should be between 15 and 25 metres and a whistle is great for signalling others in the area.
Headlamp and phone in a waterproof case: Good for visibility and emergency calls.
Shack safety: Ventilation, CO detector, tie-downs, reflective markers.
Important: Carbon monoxide exposure is a real risk in ice fishing shelters. Health Canada estimates approximately 300 carbon monoxide-related deaths per year across all settings.
To test ice thickness:
Use a spud bar every 1 to 2 steps when moving into a new area, even on clear ice. If the spud punches through the ice in one hit, do not move forward.
Drill a hole and measure thickness.
Re-check every 15 to 20 metres and whenever the ice colour or texture changes.
Let's take a closer look:
Here are some guidelines for ice thickness:
7 cm (3 in) or less – STAY OFF!
10 cm (4 in) – Safe for ice fishing and walking.
12 cm (5 in) – Thick enough for a snowmobile or ATV.
20-30 cm (8-12 in) – Ice is safe for a car or small pickup truck.
30-38 cm (12-15 in) – Ice is safe for a medium truck.
If you’re driving on ice, remember the following:
Keep your windows down, seatbelt off and doors unlocked.
Drive slowly.
Maintain 30 to 50 metres between vehicles.
Avoid driving at night.
Park with space to distribute weight evenly.
Make sure the vehicle has winter tires.
Cold shock can happen in seconds. Transport Canada states that the first couple of minutes of falling through the ice are the most critical:
Control your breathing.
Get your elbows on the edge of the ice.
Use ice picks and kick hard to get horizontal.
Slide onto the ice and roll away the way you came.
Get dry. Take off wet clothes and warm up gradually. Contact emergency services if your shivering is severe or if you begin experiencing confusion.
Rescue buddy: For solid ice or the shore, throw a rope, ladder or board. Lie flat to spread your weight and never get close to the ice hole.
Before heading out, confirm the following:
Snowmobile or ATV coverage extends to ice.
Vehicle damage or recovery is listed in your policy if you were to fall through the ice.
Whether coverage for portable shacks and gear is included under your home policy.
A BrokerLink insurance advisor can help you ensure you’re properly protected. Contact us today.
Always check your insurance before you venture out on an ice fishing trip. Some auto insurance policies have restrictions when it comes to driving on the ice. An insurance broker can help you determine if you have the right coverage. It’s easy to get in touch with a BrokerLink insurance broker!
