Ice fishing safety basics

How to judge ice, what to carry, and what to do if you fall through. Read this before you step onto a frozen lake.

By the FreeFish team · 3 min read · Updated October 14, 2026

Ice fishing is a great way to enjoy fishing year round, but no fish is worth your life. Every winter, people and vehicles go through the ice, often on ice that looked solid. This guide covers the basics, but local conditions vary. Check your state agency's ice-safety guidance and talk to local bait shops about current conditions before you go out.

Thickness guidelines for clear, new ice

Many state agencies publish guidelines similar to these minimums for clear, solid ice. Check your state's guidance, because some are more conservative.

Many anglers and agencies recommend doubling these numbers for white or "snow" ice, which is much weaker than clear ice. Ice formed from refrozen slush or snow is also weaker, as is any ice during a thaw.

Where ice is weaker

• Near inlets, outlets, springs and anywhere water moves, including rivers and narrows.
• Around docks, pilings, rocks, logs and vegetation sticking through the ice, which absorb heat.
• Over pressure ridges and cracks.
• Where snow covers the ice. Snow insulates and can hide thin or open water.
• Near aerators and other areas with bubbling or open water.
• Late in the season, when ice can look thick but has become honeycombed and weak.

Check thickness as you go

Use a spud bar (a heavy chisel) to strike the ice ahead of you as you walk. If it goes through, turn back. Drill or chop test holes regularly and measure thickness with a tape measure or ice gauge, and remember that ice 4 inches thick in one spot may be 2 inches thick 50 feet away.

What to carry

• Ice picks (ice claws) worn around your neck or on your chest, so you can pull yourself out.
• A throw rope to help someone else, or to be helped.
• A spud bar to test ice ahead of you.
• A flotation device: a life jacket, or a float suit made for ice anglers.
• A fully charged phone in a waterproof bag.
• Ice cleats for your boots to avoid falls on slick ice.
• Warm, layered clothing and a dry change of clothes in the vehicle.

Good habits

• Never go out alone. Tell someone where you are going and when you'll be back.
• Go out on foot early in the season, and stay away from unfamiliar areas.
• Spread out when walking in a group.
• If driving onto the ice is allowed and conditions are safe, drive slowly, keep windows down, unbuckle your seat belt, and have an escape plan.
• Avoid alcohol. It speeds up heat loss and impairs judgment.
• Watch for signs of hypothermia: shivering, slurred speech, confusion and drowsiness.

If you fall through

1. Stay calm and control your breathing. The shock of cold water causes gasping. It passes in about a minute. Keep your head above water.
2. Turn toward the direction you came from. That ice held you before.
3. Get your arms onto the ice, kick your legs behind you to get horizontal, and use your ice picks to pull yourself forward onto the ice.
4. Roll away from the hole. Don't stand up until you're on solid ice, which spreads out your weight.
5. Get warm and get help immediately, even if you feel okay.

If someone else falls through

Call 911. Do not run up to the hole, or you may go in too. Use the "reach, throw, go" approach: reach with a pole or branch, throw a rope or anything that floats, and only go out with proper rescue equipment and training. Lie down to spread your weight if you must approach.

Once you are safe on good ice, use our guide to where fish are in winter to find them.