How thick should new, clear ice be before you walk out on a lake?

At least 4 inches of new, clear ice.

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The Just Right card

Too littleWalk out once it looks frozen
Too muchWait until cars are driving on it
Just rightCheck for 4 inches of clear ice

Huh, didn't know that: White ice, from snow that melted and refroze, is only about half as strong as clear ice, so it needs twice the thickness.

The dad joke
What do you call an old snowman? Water.
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References

Answer: At least 4 inches. Minnesota DNR says stay off new, clear ice under 4 inches thick. Ice can be thick in one spot and thin a few yards away, so check as you go.

  1. Minnesota DNR: General ice thickness guidelines www.dnr.state.mn.us/safety/ice/thickness.html
    4" | Ice fishing or other activities on foot
    Checked 2026-10-09.

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