This map displays current ice thickness measurements for rivers and lakes across the state. For sea ice information, please see the Alaska Sea Ice Program's website.  Ice thickness measurements are generally taken near the beginning of the month from October to June.

Readings taken after the 15th of the month
are displayed with and computed in the statistical average for the following month.

To view historical readings please select the month/year below:

Ice Thickness
Ice Thickness % Avg

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Circle Markers

Ice Links

• General ice thickness guidelines
• US Army Corps of Engineering - Safe Loads on Ice Sheets
• This YouTube link has good information on what to do if you fall through the ice.