Ice safety

How thick is safe?

No ice is ever completely safe. Thickness varies across a lake and changes with snow, current, springs and temperature swings. Use these numbers as a minimum, check the ice yourself as you go, and follow outfitters’ marked roads.

Minimum thickness for new, clear ice

Guidance from the Minnesota DNR.

ThicknessWhat it can hold
Under 4″Stay off
4″Walking
5–7″Snowmobile or ATV
9–10″Small car or SUV
11–12″Small truck or medium SUV
13″Medium truck
16–17″Heavy-duty truck

White or snow ice is only about half as strong as clear ice. Double these numbers for it.

Before you go out

Read the full guidance at the Minnesota DNR ice safety page.