Lake Minnetonka Conservation District

Hot Topics


Ice Safety Reminders

Minnesota DNR Ice Thickness Minimum Guidelines

Before heading out on the Lake this winter, please review the following important ice safety information. Ice thickness and strength can vary drastically over the same body of water depending on age, temperature, snow cover, and other factors. For example, white ice is half as strong as newer, clear ice. While no ice is entirely safe, the Minnesota DNR provides the following recommendations for ice thickness based on intended activity.

The DNR does not measure ice thickness on Minnesota lakes. It is your responsibility to check ice thickness at least every 150 feet using an ice chisel, ice auger or even a cordless 1/4 inch drill with a long bit.

Deicing Operations & Open Water
Certain facilities are licensed to have deicing operations on Lake Minnetonka under certain conditions. Springs, fish, channels, weather, and other factors affect ice safety. Watch for Thin Ice signs and use extra caution when recreating in bays with open water.

For more information about survival plans, vehicle escapes, and assisting others, visit

Posted on: November 18th, 2020