From ice fishing shacks to snowmobiles and quiet winter walks, frozen lakes and rivers are part of life in Wisconsin. But every winter, changing ice conditions catch people off guard. The biggest rule to remember is simple: there is no such thing as completely safe ice.
A little planning and a few basic precautions can make the difference between a great winter day and a dangerous situation.
When Is Ice Safe?
There is no single answer. Ice strength depends on a combination of factors, including temperature history, snow cover, water movement, and the type of water body. Ice can be thick in one area and dangerously thin just a few feet away.
Appearance alone is not a reliable guide. Clear ice is generally stronger than cloudy or snow-covered ice, but even clear ice can weaken quickly near inlets, outlets, narrows, or areas with current. Conditions also vary widely from lake to lake and river to river.
Know Before You Go
Ice conditions change daily, sometimes hourly. The Wisconsin Department of Natural Resources does not track ice thickness on local waters, so the best information often comes from people who are on the ice regularly.
Before heading out, check with local bait shops, fishing clubs, outfitters, or resorts. They usually have the most up-to-date knowledge about ice thickness and known problem areas. You can also check the WWN Shanty-Cast ice fishing forecast page to get an idea of conditions in your areas.
Smart Safety Tips
If you plan to spend time on frozen water, keep these basics in mind:
- Dress in warm layers and plan for wind exposure
- Never go alone and let someone know where you are going and when you plan to return
- Avoid traveling at night or during poor visibility
- Stay away from inlets, outlets, narrows, and areas with moving water
- Look for clear, solid ice and be cautious of snow-covered areas
- Carry safety gear, including ice picks or claws, a rope, a life jacket, and a cellphone in a waterproof case
What to Do If You Fall Through
If the ice gives way, staying calm is critical.
Do not remove your winter clothing. Heavy gear can trap air, providing extra flotation and insulation. Turn back toward the direction you came, where the ice was strong enough to support you before.
Place your arms on the unbroken ice and use ice picks or sharp objects to gain traction. Kick your feet while pulling yourself forward. Once you are out of the water, do not stand up right away. Lie flat and roll away from the hole to spread out your weight.
Get to a warm, dry, sheltered place as quickly as possible. In cases of moderate to severe hypothermia, medical attention is essential. Rapid warming can cause cold blood trapped in the arms and legs to rush back to the heart, which can be life-threatening.
Make Your Own Ice Claws
Ice claws are inexpensive and easy to make:
- Cut two 4-inch pieces of wooden dowel that will float if dropped
- Drive a hardened concrete nail into one end of each piece
- Sharpen the nail heads to a point
- Drill holes in the opposite ends and connect them with a strong cord so one claw hangs from each side
Keep the claws in a pocket where you can reach them quickly. If you or someone nearby breaks through the ice, those few seconds of grip can matter.
WWN Bottom Line: Winter on the ice can be fun and unforgettable, but conditions are never guaranteed. Know before you go, respect changing ice, and always plan for the unexpected.
